Abstract

[(1,2,5,6-η)-1,5-Cyclooctadiene] (1,3-propanediamine- N, N′)rhodium(1+) chloride, [(COD)RhCl(H 2NCH 2CH 2CH 2NH 2)]Cl, 11, and the water soluble complexes (COD)RhCl(Ph 2PC 6H 4-3-SO 3Na) 10, trans-[Rh(CO) (Ph 2PC 6H 4-3-CO 2H) (μ- NCMeCHCMeN )] 2 12, (Ph 2PC 6H 4-2-CO-O)-Rh(CO) ( NHMeCHCMeN ) 13a, (Ph 2PC 6H 4-2-CO-O)-Rh(CO) (indazole) 13b and trans-[Rh(CO) (Ph 2PC 6H 4-2-CHO) (μ- NCMeCHCMeN )] 2 14 were shown to catalyze the polymerization of PhCCH 1 and the substituted arylacetylenes 2– 8 at 25°C in a stereoregular manner. The cis-oriented poly(arylacetylenes), so formed, were found to depolymerize selectively at 200–225°C to the corresponding 1,3,5-triarylbenzene derivatives.

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