Isostructural organic-inorganic hybrids of P,P'-diphenylmethylenediphosphinate (CH2(P(Ph)O2)2)2- with divalent transition metals.

New organic-inorganic hybrid materials have been synthesized by reaction in water solution of manganese, cobalt or nickel acetates with P,P'-diphenylmethylenediphosphinic acid and all the two-dimensional structure coordination polymers obtained have been found to be isomorphous.