Molecular recognition of 2,6-diaminopyridine by platinum orotate complexes

Abstract

The crystal structure of {[Pt(HL)(dppe)]·NC₅H₃(NH₂)₂-2,6}₂[H₃L = 2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid, orotic acid, dppe = 1,2-bis(diphenylphosphino)ethane] has demonstrated that the in-built triple hydrogen-bonding functionality of the co-ordinated orotate is able to recognise at a molecular level 2,6-diaminopyridine, which has complementary hydrogen-bonding groups; this designed complementarity has produced a more efficient hydrogen-bonding arrangement than that possible in [Pt(HL)(dppe)] alone.