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Transition Metal Complexes Containing Dihydrogen Hypodiphosphate in Eclipsed Conformation as Ligand: Preparation, Crystal Structure, Vibrational Spectra, and Thermal Behavior of K 2 [ M (H 2 P 2 O 6 ) 2 (H 2 O) 2 ]·H 2 O ( M = Co, Ni, Cu, and Zn)
Author(s) -
Gjikaj Mimoza,
Wu Peng
Publication year - 2014
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201300305
Subject(s) - monoclinic crystal system , crystallography , chemistry , crystal structure , transition metal , eclipsed conformation , molecule , raman spectroscopy , metal , infrared spectroscopy , ligand (biochemistry) , hydrogen bond , stereochemistry , biochemistry , physics , receptor , organic chemistry , optics , catalysis
The transition metal dihydrogen hypodiphosphate hydrates K 2 [Co(H 2 P 2 O 6 ) 2 (H 2 O) 2 ] · H 2 O ( 1 ), K 2 [Ni(H 2 P 2 O 6 ) 2 (H 2 O) 2 ] · H 2 O ( 2 ), K 2 [Cu(H 2 P 2 O 6 ) 2 (H 2 O) 2 ] · H 2 O ( 3 ) and K 2 [Zn(H 2 P 2 O 6 ) 2 (H 2 O) 2 ] · H 2 O ( 4 ) were synthesized and characterized by single crystal structure determination. The compounds 1 – 4 crystallize isotypic in the monoclinic space group C 2/ m (no. 12) with two formula units in the unit cell. The crystal structure is built up by [H 2 P 2 O 6 ] 2– units in an eclipsed conformation, by the corresponding transition metal, potassium cations, and water molecules. The eclipsed conformation of the [H 2 P 2 O 6 ] 2– has not been previously observed in none of known hypodiphosphates(IV) analyzed via X‐ray diffraction. However, its proposed based on spectroscopic methods. FT‐IR/FIR and FT‐Raman spectra of the crystalline salts were recorded and the thermal behavior of the compounds was investigated.