title: 5-(2-Pyridil)-1H-tetrazole complexes with Mo(iv) and W(iv) cyanides.
abstract: The reactions of tetrazole ligand derived from 2-cyanopyridine with K3Na[Mo(CN)4O2]·6H2O and K3Na[W(CN)4O2]·6H2O in water-ethanol solution result in isolation of two new complexes with the following formulae: (PPh4)2[Mo(CN)3O(pdt)]·2H2O (1) (Hpdt = 5-(2-pyridil)-1H-tetrazole) and (PPh4)2[W(CN)3O(pdt)]·3H2O (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.
authors.affiliation: Jagiellonian University in Kraków, Faculty of Chemistry, 30-060 Kraków, R. Ingardena 3, Poland. szklarze@chemia.uj.edu.pl.
authors.forename: A
authors.initials: A
authors.lastname: Mrowiec
authors.affiliation: Jagiellonian University in Kraków, Faculty of Chemistry, 30-060 Kraków, R. Ingardena 3, Poland. szklarze@chemia.uj.edu.pl.
authors.forename: A
authors.initials: A
authors.lastname: Jurowska
authors.affiliation: Jagiellonian University in Kraków, Faculty of Chemistry, 30-060 Kraków, R. Ingardena 3, Poland. szklarze@chemia.uj.edu.pl.
authors.forename: M
authors.initials: M
authors.lastname: Hodorowicz
authors.affiliation: Jagiellonian University in Kraków, Faculty of Chemistry, 30-060 Kraków, R. Ingardena 3, Poland. szklarze@chemia.uj.edu.pl.
authors.forename: J
authors.identifier: http://orcid.org/0000-0001-9747-9238
authors.initials: J
authors.lastname: Szklarzewicz