Accession Number : AD0712739

Title :   COORDINATION COMPOUNDS OF THE TRANSITION METALS.

Descriptive Note : Final rept. 1 Jan 68-30 Jun 70,

Corporate Author : GEORGIA UNIV ATHENS DEPT OF CHEMISTRY

Personal Author(s) : King,R. B.

Report Date : SEP 1970

Pagination or Media Count : 33

Abstract : The base-catalyzed addition of phosphorus-hydrogen and arsenic-hydrogen bonds to the carbon-carbon multiple bonds in vinylphosphines and ethynylphosphines provides a useful new method for the synthesis of novel polytertiary phosphines and phosphine-arsines. Using this method the authors have prepared in large quantities and studied the coordination chemistry of the tritertiary phosphine ((C6H5)2PCH2CH2)2PC6H5, the two isomeric tetratertiary phosphines (C6H5)2PCH2CH2P(C6H5)CH2CH2P(C6H5)CH2CH2P(C6H5)2 and ((C6H5)2PCH2CH2)3P, and the hexatertiary phosphine ((C6H5)2PCH2CH2)2PCH2CH2P(CH2CH2P(C6H5)2)2. This preparative method also provides convenient syntheses of the mixed phosphine-arsines as (C6H5)2PCH2CH2As(C6H5)2. A similar base-catalyzed addition of (C6H5)2EH (E = P or As) to vinyl isocyanide gives the novel isocyanide derivatives (C6H5)2ECH2CH2NC (E = P or As). However, base-catalyzed addition of C6H5PH2 to vinyl isocyanide results in 1,4-addition to give the new phosphorus-carbon-nitrogen heterocycle 1-phenyl-4,5-dihydro-3-azaphosphole. This report also describes transition metal complexes of the ligands (C6H5)2PCCC6H5, (C6H5)2PCH2CCCH2P(C6H5)2, ((CH3)2N)3E (E = P or As), and (p-(CH3)2NC6H4)nP(C6H5)(3-n) (n =1, 2, and 3). (Author)

Descriptors :   (*PHOSPHINES, SYNTHESIS(CHEMISTRY)), (*ARSINES, SYNTHESIS(CHEMISTRY)), (*COMPLEX COMPOUNDS, PHOSPHINES), (*METAL CARBONYLS, CHEMICAL REACTIONS), IRON COMPOUNDS, MOLYBDENUM COMPOUNDS, COBALT COMPOUNDS, MANGANESE COMPOUNDS, NITRILES, DIENES, ALKYNES

Subject Categories : Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE