Concepedia

Hydrido-Silyl-Komplexe, IV [1]. Strukturelle Änderungen in Hydrido-Silyl-Komplexen infolge Si-H-Wechselwirkung; Strukturvergleich von (π-CH<sub>3</sub>C<sub>5</sub>H<sub>4</sub>)(CO)<sub>2</sub>Mn(H)SiCl<sub>3</sub> und trans-(π-CH<sub>3</sub>C<sub>5</sub>H<sub>4</sub>)(CO)<sub>2</sub>Mn(SiCl<sub>3</sub>)<sub>2</sub> / Hydrido Silyl Complexes, IV [1]. Structural Changes in Hydrido Silyl Complexes Due to Si-H Interaction; Comparison of the Structures of (π-CH<sub>3</sub>C<sub>5</sub>H<sub>4</sub>)(CO)<sub>2</sub>Mn(H)SiCl<sub>3</sub> and trans-(π-CH<sub>3</sub>C<sub>5</sub>H<sub>4</sub>)(CO)<sub>2</sub>Mn(SiCl<sub>3</sub>)<sub>2</sub>

Ulrich Schubert, Klaus Ackermann, Gertraud Kraft

Zeitschrift für Naturforschung B · 1983 · 34 citations · 0 references

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Abstract

Abstract The main difference between the structures of MeCp(CO) 2 Mn(H)SiCl 3 (1) and MeCp(CO) 2 Mn(SiCl 3 ) 2 (2) is that in 1 the SiCl 3 ligand is tilted relative to the Mn-Si vector, due to Mn-H-Si three-center two-electron bonding. Mn-Si: 225.4(1) in 1, 232.0(2) pm in 2. Comparison of the structures of MeCp(CO) 2 Mn(H)SiR 3 complexes shows that the Mn-Si distance and the tilt angle of the SiR3 group increases as Si-H interaction increases. A stereochemical pathway of the oxidative addition of HSiR 3 to the CpMn(CO) 3 fragment is suggested.