Patent ID: 8487124

Claim:
A cyclic aza-sila compound represented by the following structure: where n is 4 to 10 and each Z is independently selected from general formulae (I) and (II) ═SiY 2 (I) ═NR 3 (II) where Y is selected from —NR 1 R 2 , hydrogen and halogen, R 1 and R 2 are selected from hydrogen and hydrocarbyl radical having 1 to 20 carbon atoms and R 3 is a hydrocarbyl radical having 1 to 20 carbon atoms, wherein: (a) each Z is bonded to each adjacent Z via Si—Si or Si—N single bonds, (b) at least two Z units of the general formula (I) in a ring of the compound are bonded to one another via an Si—Si single bond, (c) at most 35 mol % of Y radicals are hydrogen, and (d) at most 15 mol % of the Y radicals are halogen.