Coordination Polymers Based on Organic–Inorganic Hybrid Rigid Rod Comprising a Backbone of Anderson-Evans POMs

Abstract

To construct polyoxometalates (POMs) coordination polymers (PCPs), we prepared two pyridine ligand-functionalized Anderson POMs: (TBA)3[MnMo6O18((OCH2)3CN═CH-4-Py)2]·DMF ((TBA)3POM-1, TBA = tetrabutyl ammonium, Py = pyridine, DMF = dimethylformamide) and (TBA)3[MnMo6O18((OCH2)3CN═CH-3-Py)2] ((TBA)3POM-2) via the postfunctionalization of (TBA)3[MnMo6O18((OCH2)3CNH2)2] (Anderson-NH2) by 4-pyridinealdehyde and 3-pyridinealdehyde, respectively. They are characterized using X-ray single-crystal diffraction, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, electrospray ionization mass spectrometry, Fourier transform infrared spectroscopy, UV–visible spectroscopy, and 1H NMR. The self-assembly of (TBA)3POM-1 and [Cu(PPh3)2(CH3CN)2]ClO4 (CuP2) in the mole ratios of 1:2 and 1:3 both gave the same one-dimensional double chain with the molecular formula of (NBu4)n{[Cu(PPh3)2]2(POM-1)}n (7.5DMF)n (1). On the contrary, the self-assembly of (TBA)3POM-2 and CuP2 in the mole ratio of 1:2 yiel...