TY - JOUR
T1 - Mehrfachbindungen zwischen Hauptgruppenelementen und Übergangsmetallen. XCIV. Pyridin-Komplexe organischer Osmiumoxide
T2 - Synthese, Spektren und Kristallstrukturen der Stoffklassen R2OsO2·(L) und R2OsO2·(L)2
AU - Herrmann, Wolfgang A.
AU - Eder, Stefan J.
AU - Kiprof, Paul
PY - 1991/8/7
Y1 - 1991/8/7
N2 - Alkylosmium(VI) complexes of compositions R2OsO2·(L) and R2OsO2·(L)2 are accessible from glycolate osmium(VI) complexes (R = CH3, CH2Si(CH3)3; L = pyridine). The equilibrium R2OsO2·(L)2 ⇌ R2OsO2·(L)+L is adjustable by vacuum (right) and pyridine (left). The dimethyl complex (CH3)2OsO2·C5H5N, albeit monomeric in solution, has a trinuclear structure (Os3O3 core geometry) in the crystal, while the formally analogous derivative [(CH3)3SiCH2]2OsO2·C5H5N is monomeric, displaying a strongly distorted trigonal-bipyramidal geometry (O-Os-O′ angle 141.3(4)°/141.7(4)°). All four complexes R2OsO2·(C5H5N)2 (R = CH3, 3a; CH2Si(CH3)3, 3b and R2OsO2·(C5H5N) (R = CH3, 4a; CH2Si(CH3)3, 4b) were characterized by means of single-crystal X-ray diffraction techniques.
AB - Alkylosmium(VI) complexes of compositions R2OsO2·(L) and R2OsO2·(L)2 are accessible from glycolate osmium(VI) complexes (R = CH3, CH2Si(CH3)3; L = pyridine). The equilibrium R2OsO2·(L)2 ⇌ R2OsO2·(L)+L is adjustable by vacuum (right) and pyridine (left). The dimethyl complex (CH3)2OsO2·C5H5N, albeit monomeric in solution, has a trinuclear structure (Os3O3 core geometry) in the crystal, while the formally analogous derivative [(CH3)3SiCH2]2OsO2·C5H5N is monomeric, displaying a strongly distorted trigonal-bipyramidal geometry (O-Os-O′ angle 141.3(4)°/141.7(4)°). All four complexes R2OsO2·(C5H5N)2 (R = CH3, 3a; CH2Si(CH3)3, 3b and R2OsO2·(C5H5N) (R = CH3, 4a; CH2Si(CH3)3, 4b) were characterized by means of single-crystal X-ray diffraction techniques.
UR - http://www.scopus.com/inward/record.url?scp=0346294502&partnerID=8YFLogxK
U2 - 10.1016/0022-328X(91)80036-J
DO - 10.1016/0022-328X(91)80036-J
M3 - Artikel
AN - SCOPUS:0346294502
SN - 0022-328X
VL - 413
SP - 27
EP - 41
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
IS - 1-3
ER -