TY - JOUR
T1 - Tetrasila-1,3-butadiene and its transformation to disilenyl anions
AU - Ichinohe, Masaaki
AU - Sanuki, Kaori
AU - Inoue, Shigeyoshi
AU - Sekiguchi, Akira
N1 - Funding Information:
This work was supported by a Grant-in-Aid for Scientific Research (Nos. 16205008, 16550028, 17655014, 18037008, 18039004) from the Ministry of Education, Science, Sports, and Culture of Japan, JSPS Research Fellowships for Young Scientists (SI), and COE (Center of Excellence) Program.
PY - 2007/1
Y1 - 2007/1
N2 - The reaction of dilithiosilane, (tBu2 MeSi)2SiLi2 (2), with 1,1,2,2-tetrachloro-1,2-dimesityldisilane produced the tetrasila-1,3-butadiene derivative, (tBu2 MeSi)2Si=Si(Mes)-(Mes)Si= Si(SiMetBu2)2 (3, Mes = 2,4,6-trimethyl-phenyl), which was isolated as reddish-purpl e crystals. The structure of 3 was determined by both spectroscopic and crystallographic methods; the Si=Si double bond lengths are 2.2003(12) and 2.1983(12) Å, and the length of the central Si=Si singl e bond is 2.3376(11) Å. The tetrasilabutadiene moiety is highly twisted, the torsional angle of Si1=Si2-Si3=Si4 being 72°. The reaction of 3 with tBuLi or KC8 in THF gave the disilenyllithium 4 and disilenylpotassium 5, which contain an sp2-type silyl anion, by the reductive cleavage of the central Si-Si bond in 3.
AB - The reaction of dilithiosilane, (tBu2 MeSi)2SiLi2 (2), with 1,1,2,2-tetrachloro-1,2-dimesityldisilane produced the tetrasila-1,3-butadiene derivative, (tBu2 MeSi)2Si=Si(Mes)-(Mes)Si= Si(SiMetBu2)2 (3, Mes = 2,4,6-trimethyl-phenyl), which was isolated as reddish-purpl e crystals. The structure of 3 was determined by both spectroscopic and crystallographic methods; the Si=Si double bond lengths are 2.2003(12) and 2.1983(12) Å, and the length of the central Si=Si singl e bond is 2.3376(11) Å. The tetrasilabutadiene moiety is highly twisted, the torsional angle of Si1=Si2-Si3=Si4 being 72°. The reaction of 3 with tBuLi or KC8 in THF gave the disilenyllithium 4 and disilenylpotassium 5, which contain an sp2-type silyl anion, by the reductive cleavage of the central Si-Si bond in 3.
KW - Anion
KW - Disilene
KW - Reduction
KW - Tetrasilabutadiene
UR - http://www.scopus.com/inward/record.url?scp=33845919557&partnerID=8YFLogxK
U2 - 10.1007/s11201-006-9011-x
DO - 10.1007/s11201-006-9011-x
M3 - Article
AN - SCOPUS:33845919557
SN - 1569-0660
VL - 3
SP - 111
EP - 116
JO - Silicon Chemistry
JF - Silicon Chemistry
IS - 3-4
ER -