Abstract Polyisocyanides with the groups -CH2N ≡ C and -C(O)O(CH2)2N≡C attached to polystyrene have been prepared and reacted with various metal carbonyl compounds resulting in the fixation on the polymeric supports of-M(CO)5, -M(CO)4 (M = Cr, Mo, W), -MO(Cl)(η-C5H5)(CO)2, -Mn2(CO)η -Mn(CO)ηX (N = 3, 4; X = Cl, Br), -Fe(CO)4, -Fe3(CO)11, -FeI2(CO)2, -FeX(η-C5H5)(CO) (X = Cl, Br, I), -Ru(CO)4, -Ru3(CO)9, ,,-Os3H2(CO)10", and -RhCl(CO)2. The cyano complexes [Fe(CN)2(η-C5H5)CO]- and [Mo(CN)2(η-C5H5)(CO)2]- have been immobilized by alkylation with chloromethylated polystyrene