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Synthesis, Structure, and Magnetic Properties of Amine‐Templated Transition‐Metal Phosphites
Author(s) -
Ramaswamy Padmini,
Mandal Sukhendu,
Hegde Naya,
Prabhu Ramanath,
Banerjee Debmalya,
Bhat S. V.,
Natarajan Srinivasan
Publication year - 2010
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200901206
Subject(s) - chemistry , transition metal , cobalt , vanadium , antiferromagnetism , metal , amine gas treating , crystallography , magnetic susceptibility , phosphorous acid , inorganic chemistry , stereochemistry , organic chemistry , catalysis , physics , condensed matter physics
Transition‐metal phosphites of cobalt and vanadium, [C 4 N 2 H 12 ][Co(HPO 3 ) 2 ] ( I ), [C 4 N 2 H 14 ][Co(HPO 3 ) 2 ] ( II ), [Co(C 10 H 8 N 2 )(H 2 PO 3 ) 2 ] ( III ), [C 4 N 2 H 14 ][V III F(HPO 3 ) 2 ] · H 2 O ( IV ), and [C 3 N 2 H 5 ] 2 [V 4 III (H 2 O) 3 (HPO 3 ) 4 (HPO 4 ) 3 ] ( V ), have been synthesized and characterized. Organophosphorus esters were employed to stabilize cobalt in tetrahedral coordination and also to prepare the low‐dimensional structures, which are otherwise difficult to synthesize. The structures have one‐ ( I , II , IV ), two‐ ( III ) and three‐dimensionally ( V ) extended networks built up by the linking of metal polyhedra and phosphite units. Another vanadyl phosphite, [C 2 N 2 H 10 ][(V IV O) 3 (H 2 O)(HPO 3 ) 4 ] · H 2 O,15 was also prepared and investigated extensively by ESR, magnetic susceptibility, and other studies. All the compounds in the present study exhibit antiferromagnetic interactions. Well‐established magnetic models have been used to fit the experimental data. The compounds have also been characterized in detail by using UV/Vis spectroscopic studies.