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
Filter
  • Inorganic Chemistry  (7)
  • Boranes, alkylchloro  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Zur Bildung eines Fe2(CO)6-Komplexes mit (Boryloxy)allyl-Brücke (1994)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 127 (1994), S. 91-92 
    Details
    ISSN: 0009-2940
    Keywords: Boranes, amino(imino) ; Iron, tricarbonyl(butanone) ; Diiron, [(boryloxy)allyl]hexacarbonyl ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: On the Formation of a Fe2(CO)6 Complex with a (Boryloxy)allyl BridgeThe amino(imino)borane Me3Si(tBu)N=B=NtBu (1) reacts with (benzylideneacetone)tricarbonyliron (2) in 1:2 molar ratio to give a 50% yield of the hexacarbonyldiiron complex 3 with a fly-over (boryloxy)allyl bridge, which crystallizes in the space group P21/c. The structure of 3 can be described as a pyramid with Fe(CO)3 at the apex and a non-planar pentagon [-Fe(CO)3-O(BXX′)-C(Me)-CH-C(Ph)-] [X = NHtBu, X′ = N(SiMe3)tBu] as the basis, but there is no bond between the apex and the O atom.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19941270114
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    [2+2]-Cycloaddition vo Iminoboranen mit einem Neopentylidentantal-Komplex (1990)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 123 (1990), S. 485-487 
    Details
    ISSN: 0009-2940
    Keywords: [2 + 2] Cycloaddition / Iminoborane / Carbene-metal complex / Azaboratantalacylobutane / Tantalum complex ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: [2 + 2] Cycloaddition of Iminoboranes to a Neopentylidenetantalum ComplexThe neopentylidene complex(η-Cp)cl2Ta=CHtBu (1) and the iminoboranes R′B≡NR (2a-d, R′/R = Et/tBu, Bu/tBu, iBu/ iBu, Ph/tBu) undergo a [2 + 2] cycloaddition yielding the corresponding 1-aza-2-bora-4-tantalacyclobutanes 3a-d. The crystal and molecular structure of 3c is reported.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19901230313
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Diboran(4)yl Groups as Ligands to Transition Metals (1996)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 129 (1996), S. 1099-1101 
    Details
    ISSN: 0009-2940
    Keywords: Diboranes ; Transition-metal boryl complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reaction of Na[(Cp)Fe(CO)2] and Na[(Cp)W(CO)3] with B2(NMe2)2Cl2 yields the first transition metal-substituted diboranes [Cl(Me2N)B-B(NMe2)M(Cp)(CO)n] [M(Cp)(CO)n = Fe(Cp)(CO)2, W(Cp)(CO)3] (1a, b). The compounds were characterized in solution by NMR methods and in the crystal by X-ray structural determination.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19961290919
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Weitere Reaktionen der Iminoborane RB≡NR′ mit Neopentylidentantal-Komplexen (1993)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 126 (1993), S. 1571-1577 
    Details
    ISSN: 0009-2940
    Keywords: Iminoboranes ; Tantalum complexes, cyclic carbene- ; Azaboratantalacyclobutanes ; Azaboratantalacyclobutenes ; Diazoniadiboratatantalacyclohexadienes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Further Reactions of Iminoboranes RB≡NR' with Neopentylidenetantalum ComplexesThe azaboratantalacyclobutanes [-NR≡-BR-CH(tBu)-Ta-CpCl2-] (3b, d, f, h-1; R/R′=Pr/tBu, iPr/tBu, iPr/iPr, tBuCH2/tBuCH2, Me3SiCH2/Me3SiCH2, tBu/Me, tBu/iPr, tBu/SiMe3) are formed from the corresponding iminoboranes RB≡NR′ and the neopentylidenetantalum complex [tBuHC=TaCpCl2] (2a) by [2 + 2] cycloaddition. The elimination of HCl from 3b, d, f, h and from the four known azaboratantalacyclobutanes 3a, c, e, g [R/R'equals;Et/tBu, Bu/tBu, Ph/tBu, iBu/iBu] gives the azaboratantalacyclobutenes [-NR′-BR-C(tBu)=TaCpCl-] (4a-h). X-Ray structural analyses of 4e, f show these cyclic carbenetantalum complexes to contain short Ta-C and Ta-N bonds and perhaps some transannular Ta-B interaction. The complex [tBuHC=TaCl3(THF)2] (2b) adds iminoboranes RB≡NtBu with unbranched alkyl groups (R=Et, Pr, Bu) in a 1:2 molar ratio to yield the diazoniadiboratatantalacyclohexadienes 5a-c; the product 5a adopts a non-planar ring structure in the crystal. The 1:2 reaction of 2b with tBuB≡NMes, instead, results in the cyclobutane [-N(Mes)-B(tBu)-N(Mes)-TaCl3(THF)-] (7m).
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19931260711
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Zur Addition von Alkyldichlorboranen an Bis(η5-cyclopentadienyl)dihydridowolfram (1994)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 127 (1994), S. 1613-1614 
    Details
    ISSN: 0009-2940
    Keywords: Tungsten, bis(η5-cyclopentadienyl)dihydrido- ; Boranes, alkylchloro ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: On the Addition of Alkyldichloroboranes to Bis(η5-cyclopentadienyl)dihydridotungstenReaction of basic [Cp2WH2] (1) with the Lewis acids iPrBCl2 and tBuBCl2 does not lead to adducts of the type [Cp2WH2 (RBCl2)] [R = iPr, tBu]. The zwitterions [CpWH3(η5-C5H4BRCl2)] (R = iPr, 2a; tBu, 2b) having an exocyclic boron substituent were isolated instead in 60% yield. The molecular structure of 2b crystallizing in the space group P21/n is proved by X-ray structure determination.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19941270910
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Synthesis and reactions of {o-{[bis(dimethylamino)boryl]methyl}phenyl}diphenylphosphaneDedicated to Professor Welf Bronger on the Occasion of his 65th Birthday (1997)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 1093-1097 
    Details
    ISSN: 0044-2313
    Keywords: (Borylorganyl)phosphanes ; (Borylorganyl)phosphoniumsalt ; X-ray structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthese und Reaktionen von {o-{[Bis(dimethylamino)boryl]methyl}phenyl}diphenyl-phosphanDas neue α,ω-[Boryl(organyl)]phosphan o-Ph2PC6H4CH2 (NMe2)2 (10) wurde synthetisiert und spektroskopisch charakterisiert. Die Reaktivität dieser Verbindung, vor allem gegenüber Substitutionsreaktionen am Boratom war der Gegenstand unserer Untersuchungen. Verbindung 10 reagiert mit MeOH, BCl3 bzw. HCl zu den Verbindungen o-Ph2PC6H4CH2B(OMe)2 (10 a), o-Ph2PC6H4CH2BCl2 (10 c), o-Ph2PC6H4CH2BCl2 (HNMe2) (10 d) und o-Ph2P(HCl)C6H4CH2 BCl2(HNMe2) (10 e). Die Umsetzung von 10 a mit LiAlH4 führt zu o-Ph2PC6H4CH2BH2 (10 b). Verbindung 10 e wurde zusätzlich durch eine Röntgenstrukturanalyse charakterisiert.
    Notes: The new α,ω-[boryl(organyl)]phosphane o-Ph2PC6H4CH2B (NMe2)2 (10) was obtained in good yields from the reaction of CIB(NMe2)2 with o-Ph2PC6H4CH2Li(tmeda). Five derivatives of 10 were obtained by substituting the boron-bound amino groups by reactions with MeOH, BCl3, HCl, and LiAlH4, respectively, in particular, o-Ph2(HCl)PC6H4CH2BCl2 (HNMe2) (10 e) which shows a unique P—H—Cl—H—N unit. Compound 10 and its derivatives were characterized by multinuclear NMR methods, mass spectra, and elemental analyses. In addition, the structure of 10 e · 1.5 C6H6 was determined by single crystal X-ray diffraction.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19976230714
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Synthesis and Characterisation of N,N′-Disubstituted 1,2-phenylenebis(amido)tin(II) Compounds; X-Ray structures of 1,2- and of [1,2- (tmeda)Dedicated to Professor Herbert Roesky on the Occasion of his 60th Birthday (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 1922-1928 
    Details
    ISSN: 0044-2313
    Keywords: Bis(amido)tin(II) compounds ; X-ray structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthese und Charakterisierung von N,N′-disubstituierten 1,2-Phenylendiamidozinn(II)-Verbindungen; Röntgenstruktur von 1,2- und [1,2- (tmeda)Die zyklischen Bis(amido)zinn(II)-Verbindungen 4-6 wurden entweder (i) durch Umsetzung der entsprechenden Dilithiumverbindungen 1,2-C6H4[N(R)Li]2 1-3 und SnCl2 (oder für 4: 2 1 + [Sn(μ-Cl){N(SiMe3)2}]2) oder (ii) durch Umsetzung von 1,2-C6H4[N(H)R]2 und Sn[N(SiMe3)]2 erhalten. Die Reaktion von 4 mit tmeda führt zu Verbindung 7. Verbindungen 4-6 sind monomer, gelb, thermochrom (Farbvertiefung zu rot beim Erhitzen), diamagnetisch, kristallin, lipophil und im Vakuum sublimierbar. Verbindung 7 ist farblos. Verbindungen 6 und 7 wurden durch Kristallstrukturanalyse charakterisiert. Verbindung 6 weist eine dimere Struktur auf, in der schwache ηC6…Sn Kontakte auftreten.
    Notes: Cyclic bis(amido)tin(II) compounds 1,2- [R = SiMe3] (4), SiMe2But (5) and CH2But (6)], as well as (4)2(μ-tmeda) 7 have been obtained either from (i) the corresponding dilithium compound 1,2-C6H4[N(R)Li]2 1-3 and SnCl2 for 4-6, respectively, (or for 4) 2 1 + [Sn(μ-Cl){N(SiMe3)2}]2; or (ii) 1,2-C6H4[N(H)R]2 + Sn[N(SiMe3)2]2 for 4-6; or for 7 from 4 and tmeda. Compounds 4-6 are monomeric, yellow, thermochromic (becoming redder on heating), diamagnetic, crystalline and are lipophilic and sublimable in vacuo. Compound 7 is colourless. The molecular structures of 6 and 7 have been determined from single crystal X-ray diffraction data. Compound 6 crystallises in bimolecular aggregates, in which there is a weak η-C6 … Sn contact.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956211115
    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...