Synthesis and Crystal Structures of the Coordination Polymers Pb(PYTAC)2 and Pb2(PYTAC)3(NO3) (PYTAC = 2-(pyridin-4-yl)thiazole-5-carboxylate)

Abstract

Two lead coordination compounds, Pb(PYTAC)2 (1), and Pb(PYTAC)2(NO3) (2), were grown as single crystals via hydrothermal synthesis (PYTAC = 2-(4-pyridyl) thiazole-4-carboxylate). Both compounds have been identified via single crystal X-ray diffraction. Coordination polymer 1 crystallizes in a triclinic space group P-1 (a = 5.5097(4) A, b = 7.2822(5) A, c = 11.3134(8) A, α = 103.5580(10)°, β = 99.4330(10)°, γ = 97.1050(10)°), and forms 2-D layers parallel to the crystallographic (ac) plane. Coordination polymer 2 crystallizes in a triclinic space group P-1 (a = 9.8102(5) A, b = 10.5972(6) A, c = 14.8076(8) A, α = 91.9350(10)°, β = 100.8050(10)°, γ = 103.1350(10)°), and forms an infinite 1-D chains along the a axis. 2-(4-pyridyl) thiazole-4-carboxylate (PYTAC) contains a number of potential coordination sites to which a lead cation can coordinate, allowing study of the preferential binding character of this ion.