Synthesis and structural studies of new asymmetric pyridyl-tetrazole ligands for supramolecular chemistry

The reactions of tetrazole ligand derived from 2-cyanopyridine with KNa[Mo(CN)O]·6HO and KNa[W(CN)O]·6HO in water-ethanol solution result in isolation of two new complexes with the following formulae: (PPh)[Mo(CN)O(pdt)]·2HO (1) (Hpdt = 5-(2-pyridil)-1H-tetrazole) and (PPh)[W(CN)O(pdt)]·3HO (2). The complexes were characterized by elemental analysis, single crystal X-ray structure measurements, IR and UV-Vis spectroscopy, cyclic voltammetry measurement as well as thermogravimetric measurement. The X-ray crystal structure measurements indicated the presence of two coordination isomers in a single crystal. The pyridine nitrogen occupies both trans and/or cis position to the M[double bond, length as m-dash]O bond, which is explained by similar pK of pyridine and tetrazole nitrogen. The DTG measurements indicate the stabilization of tetrazole upon coordination.

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5-(2-Pyridil)-1H-tetrazole complexes with Mo(iv) and W(iv) cyanides

Mrowiec

Jurowska

Hodorowicz

et al. 2017

Dalton Trans.

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Synthesis and structural studies of new asymmetric pyridyl-tetrazole ligands for supramolecular chemistry

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5-(2-Pyridil)-1H-tetrazole complexes with Mo(iv) and W(iv) cyanides

5-(2-Pyridil)-1H-tetrazole complexes with Mo(iv) and W(iv) cyanides

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