An isolable dialkylsilylene and its derivatives. A step toward comprehension of heavy unsaturated bonds

作者：Kira, Mitsuo^*

来源：Chemical communications, 2010, 46(17): 2893-2903.

DOI：10.1039/c002806a

• STABLE 5-MEMBERED-RING ALLENES
• X-RAY-STRUCTURE
• OXIDATIVE ADDITION
• SILYLENE INSERTION
• GROUP-14 ELEMENTS
• CRYSTAL-STRUCTURE
• LIGAND PROPERTIES
• LOW COORDINATION
• SILICON-SULFUR
• METAL ALKYLS

Synthesis and structural characteristics of an isolable dialkylsilylene and its application for the synthesis of unique silicon unsaturated compounds such as silanechalcogenones, silaketenimines, a tetrasila-1,3-diene and a trisilaallene are discussed. Because the silylene has no aromatic or alkenyl substituents, the derivatives are mostly free from the influence of the p-conjugative substituents, and hence, are suitable for exploring the intrinsic or standard characteristics of the unsaturated bonds. Using perturbation molecular orbital (PMO) theory, the importance of pi-sigma* mixing is emphasized to figure out the key issues of heavy unsaturated bonds.

• 出版日期2010
• 单位杭州师范大学