ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Intramolekularer Antiferromagnetismus in [Cr2(μ-NH2)3(NH3)6]I3Professor Hans-Dieter Scharf zum 65. Geburtstag gewidmet (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 959-962 
    Details
    ISSN: 0044-2313
    Keywords: Tri-μ-amido-bis-[triammine chromium(III)]-iodide ; binuclear chromium compound ; antiferromagnetic exchange coupling ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Intramolecular Antiferromagnetism in [Cr2(μ-NH2)3(NH3)6]I3The magnetism of [Cr2(μ-NH2)3(NH3)6]I3 which consists of binuclear cations with NH2--bridged face-sharing octahedral coordination polyhedra and a metal-metal separation of 264.9 pm can be explained by antiferromagnetically exchange-coupled CrIII-3d3 pairs. The magnetochemical analysis in the temperature range 5 K - 295 K on the basis of the isotropic Heisenberg model (spin Hamiltonian Ĥ = -2 JŜ1 · Ŝ2) leads to the parameter value J = -98(3) cm-1. Compared to the exchange coupling in corresponding binuclear chromium compounds with OH- bridges and identical metal-metal separation the strength of the coupling is significantly enhanced (JNH2/JOH ≍ 1.6).
    Notes: Der Magnetismus der Zweikern-Komplexverbindung [Cr2(μ-NH2)3(NH3)6]I3, die Kationen aus zwei Chromzentrierten und über NH2--Gruppen flächenverknüpften oktaedrischen Koordinationspolyedern mit d(Cr—Cr) = 264,9 pm enthält, wird durch eine antiferromagnetische Austauschkopplung zwischen den Spins der beiden CrIII-3d3-Zentren bestimmt. Die Analyse des Temperaturverlaufs der magnetischen Suszeptibilität zwischen 5 K und 295 K auf der Grundlage des isotropen Heisenberg-Modells mit dem Spin-Hamilton-Operator Ĥ = -2JŜ1 · Ŝ2 führt zu dem Austauschparameterwert J = -98(3) cm-1. Er zeigt an, daß die antiferromagnetische Wechselwirkung gegenüber der von entsprechend aufgebauten Komplexen mit OH--Brücken und gleichem Cr—Cr-Abstand deutlich verstärkt ist (JNH2/JOH ≈ 1,6).
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956210610
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    K4Au7Ge2: eine Gerüststruktur mit Au7-Doppeltetraedern und Ge2-Hanteln (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 975-978 
    Details
    ISSN: 0044-2313
    Keywords: Potassium germanium auride ; synthesis ; single crystals ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: K4Au7Ge2: a Framework Structure with Au7-Double-Tetrahedra and Ge2-Dumb-BellsBlack lustrous, brittle single crystals of a hitherto unknown K4Au7Ge2 were synthesized by the reaction of KN3, germanium- and gold-powder at 550°C. The structure was determined from X-ray single-crystal diffractometry data: space group R3m, Z = 3, a = 6.411(3) Å, c = 27.912(20) Å, R/Rw(w = 1) = 0.046/0.056, Z(Fº2) ≥ 3σ(Fº2) = 302 and N(var.) = 18.K4Au7Ge2 crystallizes in a substitution variant of the MgCu2-type. Gold and germanium form a framework structure that consists of corner-sharing Au7-double-tetrahedra and Ge2-dumb-bells. The potassium atoms occupy channel-like cavities within the gold germanium partial structure.
    Notes: Schwarz glänzende, spröde Einkristalle eines bislang unbekannten K4Au7Ge2 wurden durch Umsetzung von KN3, Germanium- und Goldpulver bei 550°C synthetisiert. Die Struktur wurde aus Röntgen-Einkristall-Diffraktometerdaten bestimmt:Raumgruppe R3m, Z = 3, a = 6,411(3) Å, c = 27,912(20) Å, R/Rw(w = 1) = 0,046/0,056, Z(Fº2 ≥ 3σFº2) = 302 und Z(Var.) = 18.K4Au7Ge2 kristallisiert in einer Substitutionsvariante des MgCu2-Typs. Gold und Germanium bilden eine Gerüststruktur, die aus spitzenverknüpften Au7-Doppeltetraedern und Ge2-Hanteln besteht. Die Kaliumatome besetzen kanalartige Hohlräume innerhalb der Au—Ge-Teilstruktur.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956210613
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Na4AuTl, die erste ternäre Verbindung im System Natrium/Gold/Thallium (1997)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 1621-1624 
    Details
    ISSN: 0044-2313
    Keywords: Sodium auride thallide ; gold chains ; thallium dumb-bells, synthesis ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Na4AuTl, the First Ternary Compound in the System Sodium/Gold/ThalliumSilver coloured, brittle single crystals of Na4AuTl were obtained by the reaction of NaN3, gold sponge and TlN3 at 773 K. The structure was determined from X-ray single-crystal diffractometry data: \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm space}\,{\rm group}\,{\rm Fmmm,}\,{\rm Z = 8,}\,{\rm a = 5}{\rm .453(1)}\mathop {\rm A}\limits^ \circ,\,{\rm b = 10}{\rm .006(2)}\,\,\mathop {\rm A}\limits^ \circ,\,{\rm c = 23}{\rm .387(5)}\,\mathop {\rm A}\limits^ \circ $$\end{document} Na4AuTl crystallizes in a new structure type with separated gold and thallium partial structures. These consist of linear ∞1[Au2/2] chains and [Tl2] dumb-bells. Structural relationships between Na2Au and the Na Au partial structure of Na4AuTl are discussed.
    Notes: Silberfarbene, spröde Einkristalle eines bislang unbekannten Na4AuTl wurden durch Umsetzung von NaN3, Goldschwamm und TlN3 bei 773 K erhalten. Die Struktur wurde aus Röntgen-Einkristall-Diffraktometerdaten bestimmt: \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm Raumgruppe}\,{\rm Fmmm,}\,{\rm Z = 8,}\,{\rm a = 5,453(1)}\mathop {\rm A}\limits^ \circ,\,{\rm b = 10,006(2)}\,\,\mathop {\rm A}\limits^ \circ,\,{\rm c = 23,387(5)}\,\mathop {\rm A}\limits^ \circ $$\end{document} Na4AuTl kristallisiert in einem neuen Strukturtyp mit voneinander separierten Gold- und Thallium-Teilstrukturen, die aus linearen ∞1[Au2/2]-Ketten und [Tl2]-Hanteln aufgebaut sind. Strukturbeziehungen zwischen Na2Au und der Na—Au-Teilstruktur von Na4AuTl werden diskutiert.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19976231023
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Einkristallzüchtung und Strukturverfeinerung von RbAu und CsAu (1993)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 1095-1097 
    Details
    ISSN: 0044-2313
    Keywords: Rubidium auride ; caesium auride ; preparation ; single-crystals ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Single-Crystal Growth and Structure Refinement of RbAu and CsAuSingle-crystals of RbAu and CsAu were obtained by the reaction of the alkalimetal azides with gold-powder at 400°C. The structures were determined from X-ray single-crystal diffraktometer data: space group Pm3m, Z = 1; RbAu, a = 4.098(1) Å, R/Rw(w = 1) = 0.011/0.011, N(Fo2) ≥ 3σ(Fo2) = 41 and N(var.) = 4; CsAu, a = 4.258(1) Å, R/Rw(w = 1) = 0.009/0.010, N(Fo2) ≥ 3σ(Fo2) = 34 and N(var.) = 4. Both compounds crystallize in the completely ordered CsCl-type with neglible deviations from the ideal 1:1-composition.
    Notes: Einkristalle von RbAu und CsAu wurden durch Reaktion der Alkalimetallazide mit Goldpulver bei 400°C erhalten. Die Strukturen wurden aus Einkristall-Röntgen-Diffraktometerdaten bestimmt: Raumgruppe Pm3m, Z = 1; RbAu, a = 4,098(1) Å, R/Rw(w = 1) = 0,011/0,011, Z(Fo2) ≥ 3σ(Fo2) = 41 und Z(Var.) = 4; CsAu, a = 4,258(1) Å, R/Rw(w = 1) = 0,009/0,010, Z(Fo2) ≥ 3σ(Fo2) = 34 und Z(Var.) = 4. Beide Verbindungen kristallisieren im vollständig geordneten CsCl-Typ mit vernachlässigbarer Abweichung von der idealen 1:1-Zusammensetzung.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19936190621
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Kolumnarstrukturen bei Tri- und Diamminnitraten, [M(NH3)3]NO3 und [M(NH3)2]NO3 des einwertigen Kupfers und SilbersProfessor Friedo Huber zum 60. Geburtstage am 4. Juni 1989 gewidmet (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 571 (1989), S. 37-50 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Columnarstructures of Tri- and Diamminenitrates, [M(NH3)3]NO3 and [M(NH3)2]NO3 of Monovalent Copper and SilverIn liquid ammonia [Cu(NH3)4](NO3)2 reacts with copper at room temperature to [Cu(NH3)3]NO3; the product decomposes at lower NH3 pressures to [Cu(NH3)2]NO3. With AgNO3 single crystals of [Ag(NH3)3]NO3 can be grown from liquid NH3 and [Ag(NH3)2]NO3 from a solution of NH3 in water.Single crystal X-ray structure determination has been carried out  -  in spite of lower NH3 decomposition pressure  -  on the more stable Ag complexes. Guinier data revealed that the corresponding Cu and Ag compounds are isotypic: \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm [M(NH}_{\rm 3} {\rm)}_{\rm 3}]{\rm NO}_3 :{\rm P}\mathop 6\limits^ - 2{\rm c \,N = 2} $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {{\rm M} \buildrel \wedge \over = {\rm Cu}} & {{\rm a = 7.837(2)}{\AA}} & {{\rm c = 6.036(1)}} \\\end{array}{\AA} $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {{\rm M} \buildrel \wedge \over = {\rm Ag}} & {{\rm a = 8.057(2)}{\AA}} & {{\rm c = 5.840(6)}} \\\end{array}{\AA} $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {} & {{\rm R = 0.038}} & {{\rm R}_{\rm w} {\rm = 0.040}} \\\end{array}{\rm (w = 1) Z(}\mathop {\rm F}\nolimits_0^{\rm 2}) \ge 3\sigma {\rm (}\mathop {\rm F}\nolimits_0^{\rm 2}) = 217 $$\end{document} [M(NH3)2]NO3: Pnnm, N = 4 \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {{\rm M} \buildrel \wedge \over = {\rm Cu}} & {{\rm a = 10.637(3)}{\AA}} & {{\rm b = 7.863(2)}{\AA}} & {{\rm c = 6.118(2)}{\AA}} \\\end{array} $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {{\rm M} \buildrel \wedge \over = {\rm Ag}} & {{\rm a = 10.573(2)}{\AA}} & {{\rm b = 8.110(2)}{\AA}} & {{\rm c = 6.286(1)}{\AA}} \\\end{array} $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {} & {{\rm R = 0.029}} & {{\rm R}_{\rm w} {\rm = 0.033}} \\\end{array}{\rm (w = 1) Z(}\mathop {\rm F}\nolimits_0^{\rm 2}) \ge 3\sigma {\rm (}\mathop {\rm F}\nolimits_0^{\rm 2}) = 206 $$\end{document}The results of the structure determinations are given and the atomic arrangements are discussed by comparison.
    Notes: In flüssigem NH3 komproportioniert [Cu(NH3)4](NO3)2 mit elementarem Cu bei Raumtemperatur zu [Cu(NH3)3]NO3, das bei geringerem NH3-Partialdruck in die Diamminverbindung übergeht. Mit AgNO3 lassen sich aus flüssigem NH3 Kristalle von [Ag(NH3)3]NO3 und aus wäßrigem NH3 von [Ag(NH3)2]NO3 züchten.Die röntgenographische Strukturbestimmung mit Einkristallen wurde - wegen der geringeren NH3-Zersetzungsdrücke  -  an den stabileren Ag-Komplexen erfolgreich durchgeführt. Über Guinierdaten ließ sich zeigen, daß entsprechende Cu- und Ag-Verbindungen isotyp sind: \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm [M(NH}_{\rm 3} {\rm)}_{\rm 3}]{\rm NO}_3 :{\rm P}\mathop 6\limits^ - 2{\rm c \,Z = 2} $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {{\rm M} \buildrel \wedge \over = {\rm Cu}} & {{\rm a = 7,837(2)}{\AA}} & {{\rm c = 6,036(1)}} \\\end{array}{\AA} $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {{\rm M} \buildrel \wedge \over = {\rm Ag}} & {{\rm a = 8,057(2)}{\AA}} & {{\rm c = 5,840(6)}} \\\end{array}{\AA} $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {} & {{\rm R = 0,038}} & {{\rm R}_{\rm w} {\rm = 0,040}} \\\end{array}{\rm (w = 1) Z(}\mathop {\rm F}\nolimits_0^{\rm 2}) \ge 3\sigma {\rm (}\mathop {\rm F}\nolimits_0^{\rm 2}) = 217 $$\end{document} [M(NH3)2]NO3: Pnnm, Z = 4 \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {{\rm M} \buildrel \wedge \over = {\rm Cu}} & {{\rm a = 10,637(3)}{\AA}} & {{\rm b = 7,863(2)}{\AA}} & {{\rm c = 6,118(2)}{\AA}} \\\end{array} $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {{\rm M} \buildrel \wedge \over = {\rm Ag}} & {{\rm a = 10,573(2)}{\AA}} & {{\rm b = 8,110(2)}{\AA}} & {{\rm c = 6,286(1)}{\AA}} \\\end{array} $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {} & {{\rm R = 0,029}} & {{\rm R}_{\rm w} {\rm = 0,033}} \\\end{array}{\rm (w = 1) Z(}\mathop {\rm F}\nolimits_0^{\rm 2}) \ge 3\sigma {\rm (}\mathop {\rm F}\nolimits_0^{\rm 2}) = 206 $$\end{document}.Die Ergebnisse der Strukturbestimmungen werden mitgeteilt und die Atomanordnungen vergleichend diskutiert.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895710104
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Na8Au11In6: ein Gold - Indium-Polyedergerüst mit pentagonal-bipyramidalen AuAu5In-Baueinheiten (1996)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 1581-1586 
    Details
    ISSN: 0044-2313
    Keywords: Sodium auride indide ; gold indium cluster framework ; synthesis ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Na8Au11In6: a Gold Indium Polyhedra Framework with Pentagonal Bipyramidal AuAu5In Building UnitsSilver coloured, brittle single crystals of a hitherto unknown Na8Au11In6 were synthesized by the reaction of NaN3, indium and gold sponge at 500°C. The structure was determined from X-ray single-crystal diffractometry data: space group Pbcm, Z = 4, a = 5.483(1) Å, b = 25.663(2) Å, c = 15.046(5) Å, R1/wR2 = 0.036/0.087, Z(Fo2) = 3σ(Fo2) = 2584 and N(var.) = 125.Na8Au11In6 crystallizes in a new structure type. The gold indium partial structure contains tetrahedral [Au2AuIn]T and pentagonal bipyramidal [AuAu5In]PBP building units which are connected to a three-dimensional framework via Au In exo-bonds and bridging gold and indium atoms. The interconnection pattern of the polyhedra is described by the formula [Au2AuIn]TIn4/2i-iAu2aIn2a [AuAu5In]PBP according to the notation for transition metal clusters. The sodium atoms are placed in channel like cavities within the gold indium partial structure, which run along [100]. Structural relationships between Na8Au11In6 and Friauf Laves phases are discussed.
    Notes: Silberfarbene, spröde Einkristalle eines bislang unbekannten Na8Au11In6 wurden durch Umsetzung von NaN3, Indium und Goldschwamm bei 500°C erhalten. Die Struktur wurde aus Röntgen-Einkristall-Diffraktometerdaten bestimmt: Raumgruppe Pbcm, Z = 4, a = 5,483(1) Å, b = 25,663(2) Å, c = 15,046(5) Å R1/wR2 = 0,036/0,087, Z(Fo2) = 3σ(Fo2) = 2584 and Z(Var.) = 125.Na8Au11In6 kristallisiert in einem neuen Strukturtyp. Die Gold-Indium-Teilstruktur enthält tetraedrische [Au2AuIn]T- und pentagonal bipyramidale [AuAu5In]PBP-Baueinheiten, die über Au-In-exo-Bindungen und verbrückende Au- und In-Atome zu einem 3D-Polyedergerüst verbunden werden. Das Verknüpfungsmuster der Polyeder wird nach der Notation für Übergangsmetallcluster als [Au2AuIn]TIn4/2i-iAu2aIn2a [AuAu5In]PBP beschrieben. Die Natriumatome befinden sich in Kanälen der Au-In-Teilstruktur, die entlang [100] verlaufen. Strukturelle Beziehungen zwischen Na8Au11In6 und Friauf-Laves-Phasen werden diskutiert.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19966220922
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Tetraammin-Lithium-Kationen zur Stabilisierung phenylsubstituierter Zintl-Anionen: Die Verbindung [Li(NH3)4]2[Sn2Ph4] (1997)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 1503-1505 
    Details
    ISSN: 0044-2313
    Keywords: Ditetraammine lithium tetraphenyldistannide ; synthesis ; single-crystals ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Tetraammine Lithium Cations Stabilizing Phenylsubstituted Zintl-Anions: The Compound [Li(NH3)4]2[Sn2Ph4]Ruby-red, brittle single crystals of [Li(NH3)4]2[Sn2Ph4] were synthesized by the reaction of diphenyltin dichloride and metallic lithium in liquid ammonia at -35°C. The structure was determined from X-ray singlecrystal diffractometer data: Space group, P1, Z = 1, a = 9.462(2) Å, b = 9.727(2) Å, c = 11.232(2) Å, α = 66.22(3)°, β = 85.78(3)°, γ = 61.83(3)°, R1 (F02 ≥ 4σF02) = 5.13%, wR2 (F02 ≥ 4σF02) = 10.5%, N(F02 ≥ 4σF02) = 779, N(Var.) = 163.The compound contains to Sb2Ph4 isosteric centres [Sn2Ph4]2- as anions which are connected to rods by lithium cations in distorted tetrahedral coordination by ammonia. These rods are arranged parallel to one another in the b,c-plane, but stacked along [100].
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19976231006
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    NaAuIn2, ein ternäres Aurid mit ethananalogen In2Au6-Baueinheiten und ∞1[In2/2]-Ketten (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 1677-1680 
    Details
    ISSN: 0044-2313
    Keywords: Sodium auride indide ; synthesis ; single-crystals ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: NaAuIn2, a Ternary Auride with Ethane Analogous In2Au6 Building Units and ∞1[In2/2] ChainsSilver coloured, brittle single crystals of NaAuIn2 were synthesized by the reaction of NaN3, gold-sponge and indium at 500°C. The structure was determined from X-ray single-crystal diffractometry data: space group Cmcm, Z = 4, a = 4.482(1) Å, b = 10.366(2) Å, c = 7.869(2) Å, R/Rw(w = 1) = 0.017/0.020, Z(F02) ≥ 3σ(F02) = 547 and N(var.) = 16.NaAuIn2 crystallizes in the MgCuAl2-structure type. Gold and indium form a framework structure. ∞2[AuIn6/3] layers with trigonal prismatically coordinated gold are connected via In - In contacts along [010] which consist of ethane analogous In2Au6-building units. The In-partial structure consists of saw tooth like ∞1[In2/2] chains along [001]. The sodium atoms occupy channel-like cavities within the Au - In framework structure.
    Notes: Silberfarbene, spröde Einkristalle von NaAuIn2 wurden durch Umsetzung von NaN3, Goldschwamm und Indium bei 500°C synthetisiert. Die Struktur wurde aus Röntgen-Einkristall-Diffraktometerdaten bestimmt: Raumgruppe Cmcm, Z = 4, a = 4,482(1) Å, b = 10,366(2) Å, c = 7,869(2) Å, R/Rw(w = 1) = 0,017/0,020, Z(F02) ≥ 3σ(F02) = 547 and Z(Var.) = 16.NaAuIn2 kristallisiert im MgCuAl2-Typ. Gold und Indium bilden eine Gerüststruktur. ∞2[AuIn6/3]-Schichten mit trigonal prismatisch koordiniertem Gold werden entlang [010] über In - In-Kontakte verbunden, die aus ethananalogen In2Au6-Baueinheiten bestehen. Die In-Teilstruktur besteht aus sägezahnförmigen ∞1[In2/2]-Ketten entlang [001]. Natrium besetzt kanalartige Hohlräume innerhalb der Au - In-Teilstruktur.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956211011
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Isotype Strukturen einiger Hexaamminmetall(II)-halogenide von 3d-Metallen: [V(NH3)6]I2, [Cr(NH3)6]I2, [Mn(NH3)6]Cl2, [Fe(NH3)6]Cl2, [Fe(NH3)6]Br2, [Co(NH3)6]Br2 und [Ni(NH3)6]Cl2 (1996)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 1161-1166 
    Details
    ISSN: 0044-2313
    Keywords: Hexaammine metal(II) halides, [M(NH3)6]X2 ; single crystal structure determinations ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Structures of some Hexaammine Metal(II) Halides of 3 d Metals: [V(NH3)6]I2, [Cr(NH3)6]I2, [Mn(NH3)6]Cl2, [Fe(NH3)6]Cl2, [Fe(NH3)6]Br2, [Co(NH3)6]Br2 and [Ni(NH3)6]Cl2Crystals of yellow [V(NH3)6]I2 and green [Cr(NH3)6]I2 were obtained by the reaction of VI2 and CrI2 with liquid ammonia at room temperature. Colourless crystals of [Mn(NH3)6]Cl2 were obtained from Mn and NH4Cl in supercritical ammonia. Colourless transparent crystals of [Fe(NH3)6]Cl2 and [Fe(NH3)6]Br2 were obtained by the reaction of FeCl2 and FeBr2 with supercritical ammonia at 400°C. Under the same conditions orange crystals of [Co(NH3)6]Br2 were obtained from [Co2(NH2)3(NH3)6]Br3. Purple crystals of [Ni(NH3)6]Cl2 were obtained by the reaction of NiCl2 · 6H2O and NH4Cl with aqueous NH3 solution. The structures of the isotypic compounds (Fm3m, Z = 4) were determined from single crystal diffractometer data (see “Inhaltsübersicht”).All compounds crystallize in the K2[PtCl6] structure type. In these compounds the metal ions have high-spin configuration. The orientation of the dynamically disordered hydrogen atoms of the ammonia ligands is discussed.
    Notes: Durch Umsetzungen von VI2 und CrI2 mit flüssigem Ammoniak bei Raumtemperatur wurden gelbe Kristalle von [V(NH3)6]I2 bzw. grüne von [Cr(NH3)6]I2 erhalten. Farbloses [Mn(NH3)6]Cl2 wurde durch Umsetzung von Mn mit NH4Cl in überkritischem Ammoniak einkristallin dargestellt. Farblose und transparente Kristalle von [Fe(NH3)6]Cl2 und [Fe(NH3)6]Br2 konnten durch Umsetzung von FeCl2 bzw. FeBr2 in überkritischem Ammoniak bei 400°C erhalten werden. Wird unter den gleichen Bedingungen Tri-μ-amido-bis[triammincobalt(III)]-bromid mit Ammoniak umgesetzt, so entstehen u.a. orangefarbene Kristalle von [Co(NH3)6]Br2. Violette Einkristalle von [Ni(NH3)6]Cl2 wurden durch Umsetzung von NiCl2 · 6 H2O mit NH4Cl in wäßriger NH3-Lösung erhalten.Die Strukturen der isotypen Verbindungen [M(NH3)6]X2 (Fm3m, Z = 4) wurden aus Röntgen-Einkristall-Diffraktometerdaten bestimmt: Alle Verbindungen kristallisieren im K2[PtCl6]-Typ. Die Zentralatome liegen in den oktaedrischen Komplexen in high-spin Konfiguration vor. Die Orientierung der dynamisch fehlgeordneten Wasserstoffatome der Ammoniakliganden wird diskutiert.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19966220709
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    NaAuGe, ein weiteres ternäres Aurid mit ethan-analogen Ge2Au6-Baueinheiten (1996)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 1173-1176 
    Details
    ISSN: 0044-2313
    Keywords: Sodium auride germanide ; synthesis ; single-crystals ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: NaAuGe, a Further Ternary Auride with Ethane Analogous Ge2Au6 Building UnitsBlack, brittle single crystals of NaAuGe were obtained by the reaction of NaN3, gold sponge and germanium at 800°C. The structure was determined from X-ray single-crystal diffractometry data: space group Imm2, Z = 4, a = 4.422(1) Å, b = 7.238(2) Å, c = 7.531(2) Å, R1/wR2 = 0.0195/0.0482, N(Fo2) ≥ 2σ(Fo2) = 811 and N(var.) = 21.NaAuGe crystallizes in a new ternary variant of the KHg2 (CeCu2)structure type. Gold and germanium form puckered ∞2[AuGe3/3] layers with trigonal planar coordinated gold. The ∞2[AuGe3/3] nets are connected to a framework structure via Ge - Ge contacts along [010] which consist of ethane analogous Ge2Au6 building units. The sodium atoms are placed in channels of the Au - Ge framework structure which run along [100] and [010].
    Notes: Schwarze, spröde Einkristalle von NaAuGe wurden durch Umsetzung von NaN3, Goldschwamm und Germanium bei 800°C erhalten. Die Struktur wurde aus Röntgen-Einkristall-Diffraktometerdaten bestimmt: Raumgruppe Imm2, Z = 4, a = 4,422(1) Å, b = 7,238(2) Å, c = 7,531(2) Å, R1/wR2 = 0,0195/0,0482, Z(Fo2) ≥ 2σ(Fo2) = 811 and Z(Var.) = 21.NaAuGe kristallisiert in einer neuen ternären Variante des KHg2 (CeCu2)-Typs. Gold und Germanium bilden stark gewellte ∞2[AuGe3/3]-Netze mit trigonal planar koordiniertem Gold. Die ∞2[AuGe3/3]-Netze werden über Ge - Ge-Kontakte die aus ethan-analogen Ge2Au6-Baueinheiten bestehen, entlang [010] zu einer Gerüststruktur verbunden. Natrium befindet sich in Kanälen der Au - Ge-Gerüststruktur, die längs [100] und [010] verlaufen.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19966220711
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...