Open AccessSynthesis and Structural Characterization of Lanthanum(III) Complexes of 4-Nitrosoantipyrine
Author(s) -
Meera Gopal,
Sreesha Sasi
Publication year - 2021
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2021.23047
Subject(s) - chemistry , malonate , thiocyanate , denticity , oxalate , ligand (biochemistry) , lanthanum , inorganic chemistry , medicinal chemistry , divalent , crystallography , crystal structure , organic chemistry , biochemistry , receptor
A new series of La(III) complexes of the ligand with the general formula [La(L)2(a)3] and [La2(L)4(aa)3],(a = nitrate (1), thiocyanate (2), acetate (3) and propionate (4) ions, aa = sulphate (5), thiosulphate (6),oxalate (7) and malonate (8) ions with the ligand 4-nitrosoantipyrine (L) were synthesized andcharacterized using various physico-chemical studies. The primary ligand L acts as a bidentate ligandutilizing the carbonyl group and the nitroso group for bonding. The nitrate, thiocyanate, acetate andpropionate ions are monovalent unidentate ligands, whereas sulphate, thiosulphate, oxalate and malonateions are divalent bidentate ligands in the complexes 1-8. Based on spectral data and magneticsusceptibility measurements, geometry of the lanthanum(III) complexes were also proposed.