Patent ID: 7674926

Claim:
A compound of the formula (A n H z ) m (DR 1 3−m ) q , where n is an integer from 3 to 12, z is from (n−q) to (2n+2−q), m is an integer from 1 to 3, each of the n*m instances of A is independently Si or Ge, D is Sb, As, P or B, q is 1 or 2, and each of the (3−m)*q instances of R 1 is independently H, alkyl, aryl, aralkyl, or AR 2 3 , where R 2 is hydrogen, alkyl, aryl, aralkyl, or A p H 2p+1 (1≦p≦4); such that none of the covalent A—D bonds in said formula is in a cyclic ring, and when m=1 and A n H z is a group of the formula n-A n H 2n+2−q , then at most one of the (3−m) instances of R 1 is H.