Synthesis, Characterization, and Crystal Structure of Cyclotrisilene: A Three-Membered Ring Compound with a Si-Si Double Bond.
Red-orange crystals of cyclotrisilene 3 were obtained by the reaction of the dibromotrisilane 1 and the tribromodisilane 2 with sodium in toluene [Eq. (1)]. The X-ray crystal structure of 3 shows that the three-membered ring is almost an isosceles triangle and has a twisted Si-Si double bond with a length of 2.138(2) Å.
Ichinohe
M
Department of Chemistry, University of Tsukuba, Tsukuba, Ibaraki 305-8571 (Japan).
Matsuno
T
Sekiguchi
A