Čeština
EnglishSyntheses and study on nickel(II) complexes with thiodiglycolic acid and nitrogen-donor ligands. X-ray structures of [Ni(bpy)(tdga)(H2O)] . 4H2O and [(en)Ni(µ-tdga)2Ni(en)] . 4H2O (tdgaH2=thiodiglycolic acid)
Kopel, P.; Trávníček, Zdeněk; Marek, J.; Mrozinski, J.
POLYHEDRON 23 [9]: 1573-1578, 2004
Keywords: nickel(II); thiodiglycolic acid complexes; X-ray structures
Abstract: Mixed-ligand Ni(II) complexes involving thiodiglycolate(2−) anion (tdga) and nitrogen-donor ligands in the coordination sphere have been prepared. The complexes of composition [Ni(bpy)(tdga)(H2O)] • 4H2O (1), [(en)Ni(µ-tdga)2Ni(en)] • 4H2O (2), [Ni(phen)(tdga)(H2O)] (3), [Ni(1,8-dan)(tdga)(H2O)] (4), [Ni(nphen)(tdga)(H2O)] • H2O (5), [Ni(ampy)(tdga)(H2O)] (6), where BPY=2,2′-bipyridine, EN=ethylenediamine, PHEN=1,10-phenanthroline, 1,8-dan=1,8-diaminonaphthalene, NPHEN=5-nitro-1,10-phenanthroline and AMPY=2-(aminomethyl)-pyridine, have been characterized by elemental analysis, IR and UV–Vis spectroscopies, and magnetic susceptibility measurements. Room temperature effective magnetic moments for 1–6 are ranging from 3.06 to 3.28 µeff/µB. and thus indicating that nickel atoms are six-coordinated in a deformed octahedral arrangement in all the prepared complexes. This conclusion has been confirmed by single-crystal X-ray analysis of [Ni(bpy)(tdga)(H2O)] • 4H2O (1). A binuclear structure of complex [(en)Ni(µ-tdga)2Ni(en)] • 4H2O (2) has been anticipated in connection with study of its magnetic properties over the 1.8–300 K temperature range (J=−4.35 cm−1, D=5.53 cm−1, zJ=−0.94 cm−1 for g=2.00) and unambiguously proved by a single-crystal X-ray analysis.
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IEB authors: bývalý zaměstnanec
POLYHEDRON 23 [9]: 1573-1578, 2004
Keywords: nickel(II); thiodiglycolic acid complexes; X-ray structures
Abstract: Mixed-ligand Ni(II) complexes involving thiodiglycolate(2−) anion (tdga) and nitrogen-donor ligands in the coordination sphere have been prepared. The complexes of composition [Ni(bpy)(tdga)(H2O)] • 4H2O (1), [(en)Ni(µ-tdga)2Ni(en)] • 4H2O (2), [Ni(phen)(tdga)(H2O)] (3), [Ni(1,8-dan)(tdga)(H2O)] (4), [Ni(nphen)(tdga)(H2O)] • H2O (5), [Ni(ampy)(tdga)(H2O)] (6), where BPY=2,2′-bipyridine, EN=ethylenediamine, PHEN=1,10-phenanthroline, 1,8-dan=1,8-diaminonaphthalene, NPHEN=5-nitro-1,10-phenanthroline and AMPY=2-(aminomethyl)-pyridine, have been characterized by elemental analysis, IR and UV–Vis spectroscopies, and magnetic susceptibility measurements. Room temperature effective magnetic moments for 1–6 are ranging from 3.06 to 3.28 µeff/µB. and thus indicating that nickel atoms are six-coordinated in a deformed octahedral arrangement in all the prepared complexes. This conclusion has been confirmed by single-crystal X-ray analysis of [Ni(bpy)(tdga)(H2O)] • 4H2O (1). A binuclear structure of complex [(en)Ni(µ-tdga)2Ni(en)] • 4H2O (2) has been anticipated in connection with study of its magnetic properties over the 1.8–300 K temperature range (J=−4.35 cm−1, D=5.53 cm−1, zJ=−0.94 cm−1 for g=2.00) and unambiguously proved by a single-crystal X-ray analysis.
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