Chemistry of metal hydrides. V. Preparation of platinum hydrides from[PtX(CO)R3)2] and [PtX(COOR)(Ph3P)2]

Five Co-ordinate Complexes of Platinum(II) and Palladium(II)

“…The complexes, [M2X2(PR3)4][BF4]2 where X = C1 or Br and R = ethyl for M = Pt, and where X = C1 or Br and R = ethyl or phenyl for M = Pd, and [M2X2-(PPh20)2(PPh20K)2] where M = Pd or Pt and X = C1 or Br, were prepared as previously described (8,20,25). Cleavage reactions of these halogen bridged complexes by 1,lO-phenanthroline were carried out in acetone solution under a nitrogen atmosphere and the prepara- For personal use only.…”

Optically active hydrocarbon polymers with aromatic side chains. III. Circular dichroism between 230 and 185 nm of the aromatic chromophore in high molecular weight hydrocarbons

“…In a previous paper, it was reported6 that the absorption band between 275 and 245 nm of coisotactic copolymers of (R)-3,7-dimethyl-l-octene (I) with styrene (11) is optically active and its ellipticity is much larger than in low molecular weight models, when less than 20-25% units of I1 are p r e~e n t .~J Considering that contour and vibrational spacing were similar in the -CHZ-CH-CH2-CH-H -y L c H , I I CH(CHJ, 1-11 copolymer, R = H 1-111 copolymer, R = CH3 copolymer and in the models, the larger ellipticity of the former was attributed to the smaller conformational mobility8 of the aromatic rings in the dissymmetric environment of the one screw sense helical macromolecules.…”

Chemistry of metal hydrides. VI. Cationic platinum(II) carbonyls stabilized with tertiary arsines and stibines

“…, and the alkoxy carbonyls [PtX(COOR)(Ph,P),] have recently been studied (1,2). Analogous arsine and stibine complexes have now been prepared, and compared to the former both in physical properties and chemical reactivity.…”