Influence of the counter ion on the structure of two new copper(I) coordination polymers: Synthesis, structural characterization and thermal analysis
Articolo
Data di Pubblicazione:
2013
Citazione:
Influence of the counter ion on the structure of two new copper(I) coordination polymers: Synthesis, structural characterization and thermal analysis / A. Beheshti, V. Nobakht, L. Carlucci, D.M. Proserpio, C. Abrahams. - In: JOURNAL OF MOLECULAR STRUCTURE. - ISSN 0022-2860. - 1037(2013), pp. 236-241. [10.1016/j.molstruc.2012.12.051]
Abstract:
Two new coordination polymers [Cu2(mu3-SCN)2(mu-bbd)]n (1) and {[Cu(mu-bbd)1.5](PF6)}n (2) were synthesized
by the reactions of 1,4-bis(3,5-dimethylpyrazol-1-yl)butane (bbd) with the corresponding copper(I)
salts, in order to evaluate the effect of the counter anion on the structure of the resulting products. The
structure of these compounds were determined by X-ray crystallography; Compound 1 is a 2D coordination
polymer, in which the thiocyanate ligand adopts uncommon mu3-1k1N; 2:3k2S coordination mode to
link three tetrahedrally coordinated copper centers. The fourth coordination site on each copper atom is
occupied by a pyrazole nitrogen atom belonging to a l-bbd ligand. In contrast to 1, 2 is a 1D chain coordination
polymer in which the copper atoms, adopting a distorted trigonal planar geometry, are linked by
bridging bbd ligands having alternately two different conformations. The results indicate that the use of a
coordinating counter anion as thiocyanate which is capable of bridging more than one metal center
instead of non-coordinating hexafluorophosphate anion, promotes the formation of a 2D polymer over
a 1D polymeric chain. The complexes have also been characterized by elemental analysis, IR spectroscopy,
XRPD and thermal analysis.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Copper(I) complex ; Coordination polymer ; Flexible N-donor ligands ; Counter anion role
Elenco autori:
A. Beheshti, V. Nobakht, L. Carlucci, D.M. Proserpio, C. Abrahams
Link alla scheda completa: