TY - JOUR
T1 - Reactions of mercury(II) with 2-pyridinecarboxylic and 6-methyl-2-pyridinecarboxylic acids and corresponding esters. Crystal structures of [Hg(C5H4NCOO2], [HgX2(C5H4NCOOPri)], X = Br or I and [HgCl2(MeC5H3NCOOEt)]
AU - Gonzàlez-Duarte, Pilar
AU - Leiva, Àngels
AU - March, Ricard
AU - Pons, Josefina
AU - Clegg, William
AU - Solans, Xavier
AU - Álvarez-Larena, Angel
AU - Piniella, Joan Francesc
PY - 1998/5/10
Y1 - 1998/5/10
N2 - Several mercury(II) complexes with 2-pyridinecarboxylic and 6-methyl-2-pyridinecarboxylic acids as well as with corresponding esters have been obtained and some of them structurally characterized by X-ray diffraction. [HgC5H4NCOO)2] consists of one-dimensional chains of octahedrally coordinated mercury atoms linked by means of the oxygen atoms of the carboxylate groups. The structure of the isomorphous complexes [HgX2(C5H4NCOOPri)], X = Br or I, consists of isolated centrosymmetric dimers with unsymmetrical μ-X bridges, where mercury atoms are in a distorted square pyramidal coordination. Complex [Hg(Cl2(MeC5H3NCOOEt)] has a polymeric chain structure formed by loosely bound formula units through a unique non-planar bis(chloride) asymmetric Hg(μ-Cl)2Hg bridge. In all cases picolinate ligands behave as chelates. The crystal structures are compared with those found for the related family [HgCl2(C5H4NCOOR)], R = Me, Et, Prn or Pri. © 1998 Published by Elsevier Science Ltd. All rights reserved.
AB - Several mercury(II) complexes with 2-pyridinecarboxylic and 6-methyl-2-pyridinecarboxylic acids as well as with corresponding esters have been obtained and some of them structurally characterized by X-ray diffraction. [HgC5H4NCOO)2] consists of one-dimensional chains of octahedrally coordinated mercury atoms linked by means of the oxygen atoms of the carboxylate groups. The structure of the isomorphous complexes [HgX2(C5H4NCOOPri)], X = Br or I, consists of isolated centrosymmetric dimers with unsymmetrical μ-X bridges, where mercury atoms are in a distorted square pyramidal coordination. Complex [Hg(Cl2(MeC5H3NCOOEt)] has a polymeric chain structure formed by loosely bound formula units through a unique non-planar bis(chloride) asymmetric Hg(μ-Cl)2Hg bridge. In all cases picolinate ligands behave as chelates. The crystal structures are compared with those found for the related family [HgCl2(C5H4NCOOR)], R = Me, Et, Prn or Pri. © 1998 Published by Elsevier Science Ltd. All rights reserved.
KW - Chelate complexes
KW - Crystal structures
KW - FAB mass spectra
KW - Mercury complexes
KW - Picolinate complexes
U2 - 10.1016/S0277-5387(97)00298-2
DO - 10.1016/S0277-5387(97)00298-2
M3 - Article
VL - 17
SP - 1591
EP - 1600
IS - 9
ER -