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  • Bis(tribromophosphane) - tetrabromodiborane(4) diadduct  (1)
  • Cobalta-nido-decaborane  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Phosphane - Tetrahalodiborane(4) Adducts: Formation of closo-3,4,5,6-Tetrabromo-1,2-diphosphahexaborane(4) (1992)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 125 (1992), S. 2343-2346 
    Details
    ISSN: 0009-2940
    Schlagwort(e): Bis(tribromophosphane) - tetrabromodiborane(4) diadduct ; closo-3,4,5,6-Tetrabromo-1,2-diphosphahexaborane(4) ; Chemistry ; Inorganic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: Tetrabromodiborane(4), B2Br4, forms a 1:2 adduct 1 with PBr3, which reacts at 350°C to closo-1,2-P2B4Br4 (4a) in 25% yield. Compound 4a neither rearranges to the 1,6-isomer nor decomposes to an appreciable extent upon heating to 650°C. B2C14 reacts with equimolar amounts of either tris(trimethylsilyl)-phosphane or 1,2-bis(dichlorophosphanyl)ethane to give B2Cl4 · P(SiMe3)3 (2) and B2Cl4 · Cl2PCH2CH2PCl2 (3), respectively. Compound 2 represents the first phosphane - diborane(4) monoadduct with two boron atoms in different coordination environment.
    Zusätzliches Material: 1 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/cber.19921251102
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  • 2
    Digitale Medien
    Digitale Medien
    Synthesis and Bonding in Hybrid Diborolyl/Boranyl and Thiaboranyl Triple-Decker Compounds - Electronic Contribution of Heteroborane Cluster Ligands in ComplexesDedicated to Professor Rolf Gleiter on the occasion of his 60th birthday. (1997)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 130 (1997), S. 329-334 
    Details
    ISSN: 0009-2940
    Schlagwort(e): Triple-decker complexes ; Cobalta-nido-decaborane ; Thiacobalta-closo-undecaborane ; Dithiacobalta-arachno-nonaborane ; Dithiacobalta-arachno-dodecaborane ; Boron ; Cobalt/ Sandwich complexes ; Chemistry ; Inorganic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The three-component reaction of [(η5-C5H5)Co(η5-(CEt)2(BEt)2CMe)]-, CoCl2 and B9H-14 (7) yields the triple-decker complex [(η5-C5H5)Co{μ,η5-(CEt)2(BEt)2CMe}-6-Co(B9H13)] (8) with a terminal B9H13 ligand contaning two cobalt-boron-bridging hydrogen atoms. Analogously, (6-H)-, CoCl2, and arachno-6-SB9H-12 (10) react to give the triple-decker [(η5-C5H5)Co{μ,η5-(CEt)2(BEt)2CMe}-1-Co-2-(SB9H9)] (11). The analogous reaction with the heteroboranyl anion arachno-6,8-S2B7H8- leads to the loss of one boron atom, forming the air-stable triple-decker complex [(η5- C5H5)Co{μ,η5-(CEt)2(BEt)2CMe}-7-Co-6,8-(S2B6H8)] (12). The X-ray structure determination shows that the dithiacobaltaborane fragment in 12 has an arachno cluster geometry. The three-component reaction of (6-H, CoCl2, and arachno-2,3-S2B9H10- yields the expected triple-decker [(η5-C5H5)Co{μ,η5-(CEt)2(BEt)CMe}Co-6,8-(S2B9H9)] (15), and surprisingly the sandwich complex (η5-C5H5)Co-6,8-(S2B9H9) (16). The constitutions of the new compounds are based on NMR and MS data. A rule is described regarding the electron donation of heteroboranyl cluster ligands in metal complexes.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/cber.19971300305
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