Iron complexes of (e)- and (z)-1,2-dichlorodisilenes.
Novel disilene-iron complexes [(E)- (1E) and (Z)-(eta2-R3SiClSi=SiClSiR3)Fe(CO)4 (1Z), SiR3 = tBu2MeSi] were synthesized by the reaction of the corresponding tetrachlorodisilane with an excess amount of K2Fe(CO)4, and the structures of 1E and 1Z were determined by X-ray crystallography. These complexes constitute not only the first transition-metal complexes with E,Z-isomerism but also the first complexes with halogen-substituted disilene ligands. The initial formation of 1Z during the synthetic reaction and the slow one-way isomerization of 1Z to 1E are rationalized by the intervention of the corresponding silylene complex (R3SiCl2Si)(R3Si)Si=Fe(CO)4.
Hashimoto
Hisako
H
Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, 980-8578 Sendai, Japan.
Suzuki
Katsunori
K
Setaka
Wataru
W
Kabuto
Chizuko
C
Kira
Mitsuo
M