TY - JOUR
T1 - K2M(H2P2O7)2 · 2H2O (M = Ni, Cu, Zn)
T2 - Orthorhombic forms and Raman spectra
AU - Essehli, Rachid
AU - El Bali, Brahim
AU - Tahiri, Aziz Alaoui
AU - Lachkar, Mohammed
AU - Manoun, Bouchaib
AU - Dušek, Michal
AU - Fejfarova, Karla
PY - 2005/12
Y1 - 2005/12
N2 - The crystal structures of three isotypic orthorhombic dihydrogendiphosphates, namely dipotassium copper(II)/nickel(II)/zinc(II) bis(dihydrogendiphosphate) dihydrate, K2M(H2P 2O7)2·2H2O (M = Cu, Ni and Zn), have been refined from single-crystal data. The M2+ and K + cations are located at sites of m symmetry, and the P atoms occupy general positions. These compounds also exist in triclinic forms with very similar structural features. The structures of both forms are compared, as well as the geometry of the MO6 octahedron, which is considerably elongated towards the water molecules for M = Ni and Cu. Such elongation has not been observed among the other representatives of the family. A Raman study of the whole series K2M(H2P2O7) 2·2H2O (M = Mn, Co, Ni, Cu, Zn and Mg) is reported.
AB - The crystal structures of three isotypic orthorhombic dihydrogendiphosphates, namely dipotassium copper(II)/nickel(II)/zinc(II) bis(dihydrogendiphosphate) dihydrate, K2M(H2P 2O7)2·2H2O (M = Cu, Ni and Zn), have been refined from single-crystal data. The M2+ and K + cations are located at sites of m symmetry, and the P atoms occupy general positions. These compounds also exist in triclinic forms with very similar structural features. The structures of both forms are compared, as well as the geometry of the MO6 octahedron, which is considerably elongated towards the water molecules for M = Ni and Cu. Such elongation has not been observed among the other representatives of the family. A Raman study of the whole series K2M(H2P2O7) 2·2H2O (M = Mn, Co, Ni, Cu, Zn and Mg) is reported.
UR - http://www.scopus.com/inward/record.url?scp=30744455513&partnerID=8YFLogxK
U2 - 10.1107/S0108270105036656
DO - 10.1107/S0108270105036656
M3 - Article
AN - SCOPUS:30744455513
SN - 0108-2701
VL - 61
SP - i120-i124
JO - Acta Crystallographica Section C: Crystal Structure Communications
JF - Acta Crystallographica Section C: Crystal Structure Communications
IS - 12
ER -