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Verbindungen in den Systemen Kalium(Rubidium)/Gold/Antimon: K3Au3Sb2, Rb3Au3Sb2 und K1,74Rb0,26RbAu3Sb2Professor Herbert Jacobs zum 60. Geburtstag gewidmet (1996)

Müller, Jürgen ; Zachwieja, Uwe

Weinheim : Wiley-Blackwell

Zeitschrift für anorganische Chemie 622 (1996), S. 635-639

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ISSN: 0044-2313

Keywords: Alkali metal gold antimon ; synthesis ; single-crystals ; crystal structure ; Chemistry ; Inorganic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Description / Table of Contents: Compounds in the Systems Potassium(Rubidium)/Gold/Antimony: K3Au3Sb2, Rb3Au3Sb2, and K1,74Rb0,26RbAu3Sb2Brittle, silver coloured single crystals of K3Au3Sb2, Rb3Au3Sb2 and K1,74Rb0,26RbAu3Sb2 were obtainded by reaction of the alkali metal azides (KN3, RbN3) with gold and antimon powder at 550°C. The structures of the isotypic compounds (R3m, Z = 3) were determined by X-ray single-crystal diffractometer data: K3Au3Sb2, a = 6,198(2) Å, c = 21,520(5) Å, R/Rw (w = 1) = 0,046/0,058, Z(F02) ≥ 3σ(F02) = 175, Z(Var.) = 14; Rb3Au3Sb2, a = 6,443(3), c = 21,69(2), R/Rw (w = 1) = 0,059/0,082, Z(F02) ≥ 3σ(F02) = 258, Z(Var.) = 14; K1,74Rb0,26RbAu3Sb2, a = 6,288(2) Å, c = 21,617(5) Å, R/Rw (w = 1) = 0,049/0,069, Z(F02) ≥ 3σ(F02) = 390, Z(Var) = 14. The compounds crystallize with the K3Cu3P2-structure type. The Au—Sb partial structures consist of ∞2[AuSb2/3] layers with linear Sb—Au—Sb dumb-bells and SbAu3 pyramids. The layers are separated by two crystallographically independent alkali metal atoms along [001].

Notes: Spröde, silberfarbene Einkristalle von K3Au3Sb2, Rb3Au3Sb2 und K1,74Rb0,26RbAu3Sb2 wurden durch Reaktion der Alkalimetallazide (KN3, RbN3) mit Gold- und Antimonpulver bei 550°C erhalten. Die Strukturen der isotypen Verbindungen (R3m, Z = 3) wurden aus Einkristall-Röntgen-Diffraktometerdaten bestimmt: K3Au3Sb2, a = 6,198(2) Å, c = 21,520(5) Å, R/Rw (w = 1) = 0,046/0,058, Z(F02) ≥ 3σ(F02) = 175, Z(Var.) = 14; Rb3Au3Sb2, a = 6,443(3), c = 21,69(2), R/Rw (w = 1) = 0,059/0,082, Z(F02) ≥ 3σ(F02) = 258, Z(Var.) = 14; K1,74Rb0,26RbAu3Sb2, a = 6,288(2) Å, c = 21,617(5) Å, R/Rw (w = 1) = 0,049/0,069, Z(F02) ≥ 3σ(F02) = 390, Z(Var) = 14. Die Verbindungen kristallisieren im K3Cu3P2-Typ. Die Au—Sb-Teilstruktur besteht aus ∞2[AuSb2/3]-Schichten mit linearen Sb—Au—Sb-Hanteln und SbAu3-Pyramiden. Die Schichten werden längs [001] durch zwei kristallographisch unterschiedliche Alkalimetallatome separiert.

Additional Material: 4 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/zaac.19966220411

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Na8Au11In6: ein Gold - Indium-Polyedergerüst mit pentagonal-bipyramidalen AuAu5In-Baueinheiten (1996)

Zachwieja, Uwe

Weinheim : Wiley-Blackwell

Zeitschrift für anorganische Chemie 622 (1996), S. 1581-1586

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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

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NaAuIn2, ein ternäres Aurid mit ethananalogen In2Au6-Baueinheiten und ∞1[In2/2]-Ketten (1995)

Zachwieja, Uwe

Weinheim : Wiley-Blackwell

Zeitschrift für anorganische Chemie 621 (1995), S. 1677-1680

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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

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