Preparation of a Compound with a Si<sup>II</sup>−Si<sup>IV</sup>−Si<sup>II</sup> Bonding Arrangement
Saroj Kumar Kushvaha, Paula Kallenbach, Sai Manoj N. V. T. Gorantla, Regine Herbst‐Irmer, Dietmar Stalke, Herbert W. Roesky
Abstract
Abstract Herein, we report the synthesis of a rare bis‐silylene, 1 , in which two Si II atoms are bridged by a Si IV atom. Compound 1 contains an unusual Si II −Si IV −Si II bonding arrangement with Si II −Si IV bond distances of 2.4212(8) and 2.4157(7) Å. Treatment of 1 with Fe(CO) 5 afforded a dinuclear Fe 0 complex 2 with two unusually long Si−Si bonds (2.4515(8) and 2.4488(10) Å). We have also carried out a detailed computational study to understand the nature of the Si−Si bonds in these compounds. Natural bond orbital (NBO) and energy decomposition analysis–natural orbital for chemical valence (EDA‐NOCV) analyses reveal that the Si−Si bonds in 1 and 2 are of an electron‐sharing nature.