Heterometallic molecular complex [Co2Gd(NO3)(piv)6(py)2] and coordination polymer [{CoGd(dma)2}2(bdc)5]·4DMA: the synthesis, structure, and properties

Abstract

A new heterometallic molecular complex [Co₂Gd(NO₃)(piv)₆(py)₂] (1, piv = ^–O₂CBu^t, py = pyridine) was synthesized. Its reaction with terephthalic acid (H₂bdc) in N,N-dimethylacetamide (DMA) results in metal-organic coordination polymer [{CoGd(dma)₂}₂(bdc)₅]·4DMA (2). The crystal structures of 1 and 2 were determined by single-crystal X-ray diffraction analysis. The structure of 2 has two types of channels (4×8 Å and 5×16 Å) that are occupied by coordinated and guest DMA molecules.