Tetragonal co-ordination polymers of rhodium(I) with stereochemically rigid aryl di-isocyanide linkages
Abstract
Tetragonal polymers of the type {[Rh(L)2]Cl}n with stacked layer (RhI⋯ RhI 3.31—3.41 Å) structures have been prepared by the reaction of [{Rh(CO)2Cl}2] with the polymerizing ligands (L) 1,4-di-isocyanobenzene, 1,4-di-isocyanonaphthalene, 4,4′-di-isocyanobiphenyl,2,4-di-isocyanotoluene, bis(4-isocyanophenyl)methane, or 1,5-di-isocyanonaphthalene. The new materials have been characterized by elemental analysis, thermal gravimetric analysis, i.r. and diffuse-reflectance spectra, as well as from their X-ray powder diffraction patterns.