Selective Synthesis of 2,2,4,4-Tetrasilylpentasilane

Xiaobing Zhou; Noel Chang; Jeanette Young; Xianghuai Wang

doi:10.1021/acs.inorgchem.9b01960

Selective Synthesis of 2,2,4,4-Tetrasilylpentasilane

Inorg Chem. 2019 Oct 7;58(19):12526-12528. doi: 10.1021/acs.inorgchem.9b01960. Epub 2019 Sep 18.

Authors

Xiaobing Zhou¹, Noel Chang², Jeanette Young², Xianghuai Wang²

Affiliations

¹ DuPont , Midland , Michigan 48667 , United States.
² The Dow Chemical Company , Midland , Michigan 48686 , United States.

PMID: 31532648
DOI: 10.1021/acs.inorgchem.9b01960

Abstract

A new structural isomer of nonasilane, 2,2,4,4-tetrasilylpentasilane or (H₃Si)₃SiSiH₂Si(SiH₃)₃, is formed in disproportionational condensation of neopentasilane. This reaction can be catalyzed by a freshly cleaned borosilicate surface, and the catalyzed reaction can have over 85% selectivity for this branched nonasilane near 100 °C. A synthetic method has been developed from this catalytic reaction for making 98 wt % 2,2,4,4-tetrasilylpentasilane. The high-purity 2,2,4,4-tetrasilylpentasilane has a workable shelf life in 316 stainless steel containers.