Crystal Structure and Magnetic Properties of a Linear Trinuclear Ni(II) Complex

Abstract

[Ni3(C2H3 0 2 )2(CH3 0 H)2L2] [L = l,3-bis(5-chlorosalicylideneamino)propan-2-ol dianion, (C2H3 0 2 )_ = acetate, (CH3OH) = methanol] was synthesized and its crystal structure was determined. It crystallizes in the monoclinic spaceeroup P2i /n with a = 12.694(2), b = 13.281 (4), c = 15.420(3) Ä, ß = 111.25(2)°, V = 2422.9(9) A ? ,Z = 2 . The molecule is a “linear” trinuclear complex with nearly octahedral coordination of each nickel ion. Adjacent nickel(II) ions are bridged by the phenolic oxygen atoms of the ligands and the oxygen atoms of the acetato ligands. The coordination sphere of the terminal nickel(II) ions is completed by the oxygen atom of the methanol. Adjacent nickel(II) centers are separated by 3.043(1) A and weakly antiferromagnetically coupled (J\ = -3 .4 cm-1 ). The terminal nickel(II) centers are separated by 6.086( 1) A and very weakly antiferromagnetically coupled (J2 = -0 .3 cm 1) which follows from temperature-dependent magnetic susceptibility measurements in the temperature range 4.5 to 318 K. The magnetic moment rises from 2.99 hb at 4.5 K to 5.42 /iß at 318 K. In the X(T) curve no characteristic maximum was observed.

Cite this paper

@inproceedings{Kavlakoglu2013CrystalSA, title={Crystal Structure and Magnetic Properties of a Linear Trinuclear Ni(II) Complex}, author={Ebru Kavlakoglu}, year={2013} }