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Magneto‐structural Studies in Double Chloro‐ and Pseudohalo‐bridged Isomorphic Dinickel(II) Complexes
Author(s) -
Patra Moumita,
Brandão Paula,
Pikul Adam P.,
Adak Sarmistha,
Panja Anangamohan
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202003300
Subject(s) - isostructural , chemistry , crystallography , chloride , ferromagnetism , schiff base , stereochemistry , polymer chemistry , crystal structure , organic chemistry , physics , condensed matter physics
Four new complexes, [NiL(NO 3 )]⋅CH 3 OH ( 1 ), [Ni 2 L 2 (μ‐Cl) 2 ] ( 2 ), [Ni 2 L 2 (μ 1,1 ‐NCO) 2 ] ( 3 ) and [Ni 2 L 2 (μ 1,1 ‐N 3 ) 2 ] ( 4 ) were synthesized from a tetradentate Schiff base (HL), prepared from the condensation reaction of N,N ‐dimethyldipropylenetriamine and 5‐bromosalicylaldehyde. X‐ray crystallography reveals that 2 – 4 are isostructural and isomorphic dinickel(II) compounds with bridging chloride or pseudohalides. All these three dinickel(II) complexes exhibit ferromagnetic interaction through bridging chloride or pseudohalides and their coupling constants are in the order 4 > 2 > 3 , a replication of the average strength of exchange interactions found in such complexes characterised magnetically. Most importantly, compound 3 is a precious addition to the only four known examples of this family, and unprecedented high degree of structural and magnetic resemblances observed in 2 – 4 is the major achievement of the present work.