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

The reactions of tetrazole ligand derived from 2-cyanopyridine with K Na[Mo(CN) O ]·6H O and K Na[W(CN) O ]·6H O in water-ethanol solution result in isolation of two new complexes with the following formulae: (PPh ) [Mo(CN) O(pdt)]·2H O (1) (Hpdt = 5-(2-pyridil)-1H-tetrazole) and (PPh ) [W(CN) O(pdt...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2017-03, Vol.46 (12), p.4030-4037
Main Authors: Mrowiec, A, Jurowska, A, Hodorowicz, M, Szklarzewicz, J
Format: Article
Language:English
Subjects:
Bonding
Infrared spectroscopy
Isomers
Nitrogen
Pyridines
Single crystals
Tetrazoles
X rays
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Summary:The reactions of tetrazole ligand derived from 2-cyanopyridine with K Na[Mo(CN) O ]·6H O and K Na[W(CN) O ]·6H O in water-ethanol solution result in isolation of two new complexes with the following formulae: (PPh ) [Mo(CN) O(pdt)]·2H O (1) (Hpdt = 5-(2-pyridil)-1H-tetrazole) and (PPh ) [W(CN) O(pdt)]·3H O (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.
ISSN:1477-9226
1477-9234
DOI:10.1039/c6dt04908g