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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 120 (1987), S. 11-15 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The reaction of MHCl(CO)[P(iPr)3]2, (1, 2) and MHCl-(CO)[PMe(tBu)2]2 (5, 6) with NaBH4 in methanol lead to the octahedral compounds MH(η2-BH4)(CO)[P(iPr)3]2, (3, 4) and MH(η2-BH4)(CO)[PMe(tBu)2]2 (7, 8), which posses a rigid structure in solution only at low temperatures. Above ca. -30°C exchange processes take place which involve the bridging hydrogen atoms and the terminal hydrogens attached to boron but not the metal hydride ligand. The compounds 3 and 4 react with Lewis bases L such as CO, P(OMe)3, PMe3, and P(iPr)3 to form dihydridoruthenium(II) and -osmium(II) complexes MH2(CO)-(L)[P(iPr)3]2 (9 - 15). In the reaction of 4 with methanol under reflux, the tetrahydridoosmium(IV) compound OsH4(CO)[P(i-Pr)3]2 (16) is produced.
    Notes: Die Reaktionen von MHCl(CO)[P(iPr)3]2, (1, 2) und MHCl-(CO)[PMe(tBu)2]2 (5, 6) mit NaBH4 in Methanol führen zu den oktaedrischen Verbindungen MH(η2-BH4)(CO)[P(iPr)3]2, (3, 4) und MH(η2-BH4)(CO)[PMe(tBu)2]2 (7, 8), die in Lösung nur bei tiefer Temperatur eine starre Struktur besitzen. Oberhalb von ca. -30°C finden Austauschprozesse statt, in welche die Brücken-H-Atome und die am Bor endständig gebundenen H-Atome, nicht jedoch der Metall-Hydrid-Ligand, einbezogen sind. Die Verbindungen 3 und 4 reagieren mit Lewis-Basen L wie CO, P(OMe)3, PMe3 und P(iPr)3 zu Dihydridoruthenium(II)- und -osmium(II)-Komplexen des Typs MH2(CO)(L)[P(iPr)3]2 (9-15). Bei Reaktion von 4 in Methanol unter Rückfluß entsteht die Tetrahydridoosmium(IV)-Verbindung OsH4(CO)[P(iPr)3]2 (16).
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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