COORDINATION COMPOUNDS OF THE TRANSITION METALS.
Final rept. 1 Jan 68-30 Jun 70,
GEORGIA UNIV ATHENS DEPT OF CHEMISTRY
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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 C6H52PCH2CH22PC6H5, the two isomeric tetratertiary phosphines C6H52PCH2CH2PC6H5CH2CH2PC6H5CH2CH2PC6H52 and C6H52PCH2CH23P, and the hexatertiary phosphine C6H52PCH2CH22PCH2CH2PCH2CH2PC6H522. This preparative method also provides convenient syntheses of the mixed phosphine-arsines as C6H52PCH2CH2AsC6H52. A similar base-catalyzed addition of C6H52EH E P or As to vinyl isocyanide gives the novel isocyanide derivatives C6H52ECH2CH2NC 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 C6H52PCCC6H5, C6H52PCH2CCCH2PC6H52, CH32N3E E P or As, and p-CH32NC6H4nPC6H53-n n 1, 2, and 3. Author
- Inorganic Chemistry