title: Bis(3,5-dimethyl-1H-pyrazolyl)selenide--a new bidentate bent connector for preparation of 1D and 2D co-ordination polymers.
abstract: The synthesis and description of eight polymeric complexes formed by transition metals with the bifurcated ligand bis(3,5-dimethyl-1H-pyrazolyl)selenide are discussed together with X-ray crystal analysis as well as variable temperature magnetic susceptibility and characterization by Mössbauer spectroscopy. Preferable types of binding patterns of the ligand were determined, which include a variation of the bridging modes (cis- and trans-) and of the separation length, where the latter parameter together with bending of the ligand molecule were found to be dependent on the type of co-ordination geometry of the central atom and the nature of the anion. A strategy for increasing the structure dimensionality was explored using bridging properties of anions yielding 2D hybrid organic-inorganic polymers.
authors.affiliation: Department of Chemistry, National Taras Shevchenko University, 01033 Kiev, Ukraine.
authors.forename: Maksym
authors.initials: M
authors.lastname: Seredyuk
authors.forename: Matti
authors.initials: M
authors.lastname: Haukka
authors.forename: Igor O
authors.initials: IO
authors.lastname: Fritsky
authors.forename: Henryk
authors.initials: H
authors.lastname: Kozłowski
authors.forename: Roland
authors.initials: R
authors.lastname: Krämer
authors.forename: Vadim A
authors.initials: VA
authors.lastname: Pavlenko
authors.forename: Philipp
authors.initials: P
authors.lastname: Gütlich