COORDINATION COMPOUNDS OF THE TRANSITION METALS AS RELATED TO THE CATALYTIC PROCESS AND TO THE SYNTHESIS OF NEW MATERIALS.

Numerous new metal halide, carbonyl, and cyclopentadienyl complexes of the chelating tritertiary phosphine bis2-diphenylphosphinoethyl phenylphosphine and the chelating tetratertiary phosphines 1,1,4,7,10, 10-hexaphenyl-1,4,7,10-tetraphosphadecane and tris2-diphenylphosphinoethyl phosphine are described. Some preliminary studies of reactions of metal carbonyl derivatives with diphenylvinylphosphine are discussed. Metal complexes of the acetylenic tertiary phosphines C6H52PCH2CCCH2PC6H52 and C6H52PCCC6H5 are described. A few reactions of trisdimethylaminoarsine with various metal carbonyls are summarized these resulted in the preparation of the first derivative with two trisdimethylaminoarsine ligands attached to a single metal atom. The mixed phosphine-isonitrile and arsine-isontrile ligands C6H52ECH2CH2NCE P or As have been prepared by the base-catalyzed addition of C6H52EHE P or As to vinyl isocyanide these are the first known compounds containing both tertiary phosphine or arsine and isonitrile groups. Some new compounds have been obtained from pentacarbonyliron and the diacetylenes 1,7-cyclotridecadiyne, 1,8-cyclotetradecadiyne, and 2,4-hexadiyne. Possible aerospace applications of this research are discussed. Author