Method for producing neutral complex of cyclic silane and method for producing cyclic hydrogenated silane or cyclic organosilane

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a cyclic silane neutral complex, which can be an intermediate capable of affording a cyclic hydrogenated silane or a cyclic organic silane by a uniform reaction in a solution state or in a highly dispersed suspension state, while suppressing byproducts such as silane gas and organic monosilane in a reduction step and an alkylation or arylation step, and to provide a method for producing a cyclic hydrogenated silane or a cyclic organic silane using the cyclic silane neutral complex.SOLUTION: Provided is a method for producing a cyclic silane neutral complex comprising a step of performing a cyclization reaction of a halosilane compound in the presence of at least one coordination compound selected from the group consisting of the following (1) and (2): (1) compounds represented as XR(when X is P or P=O, n=3 and R may be the same or different and represent a substituted or unsubstituted alkyl group or aryl group, when X is S, S=O, or O, n=2 and R may be the same or different and represent a substituted or unsubstituted alkyl group or aryl group, and when X is CN, n=1 and R represents a substituted or unsubstituted alkyl group or aryl group. However, the number of amino groups in XRis 0 or 1); and (2) at least one heterocyclic compound selected from substituted or unsubstituted heterocyclic compounds containing, in the ring, N, O, S, or P having an unshared pair of electrons (however, the number of tertiary amino groups the heterocyclic compound has is 0 or 1).