TY - JOUR
T1 - Mehrfachbindungen zwischen Hauptgruppenelementen und Übergangsmetallen. CI. Stereoselektive synthese gemischtalkylierter osmiumoxide
AU - Herrmann, Wolfgang A.
AU - Eder, Stefan J.
AU - Kiprof, Paul
AU - Watzlowik, Petra
PY - 1992/4/28
Y1 - 1992/4/28
N2 - Two-step alkylation of osmium(VI) glycolate complexes yields mixed-alkyl oxoosmium complexes of formula (R1)2(R2)2OsO along two different routes. Due to the chelate ligands present in the starting compounds, square-pyramidal alkyl complexes of cis-geometry (R1/R1 and R2/R2 respectively) are obtained in stereoselective reactions. The crystal and molecular structure of dimethyl(2,3-dimethylbutane-2,3-diolato)oxoosmium(VI) (4a) has been determined by X-ray diffraction, again revealing a square-pyramidal core geometry with the oxo ligand at the apex position [d(OsO) = 162.1(4) pm].
AB - Two-step alkylation of osmium(VI) glycolate complexes yields mixed-alkyl oxoosmium complexes of formula (R1)2(R2)2OsO along two different routes. Due to the chelate ligands present in the starting compounds, square-pyramidal alkyl complexes of cis-geometry (R1/R1 and R2/R2 respectively) are obtained in stereoselective reactions. The crystal and molecular structure of dimethyl(2,3-dimethylbutane-2,3-diolato)oxoosmium(VI) (4a) has been determined by X-ray diffraction, again revealing a square-pyramidal core geometry with the oxo ligand at the apex position [d(OsO) = 162.1(4) pm].
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U2 - 10.1016/0022-328X(92)83228-A
DO - 10.1016/0022-328X(92)83228-A
M3 - Article
AN - SCOPUS:0004204720
SN - 0022-328X
VL - 428
SP - 187
EP - 197
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
IS - 1-2
ER -