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Synthesis, Characterisation and Crystal Structure of a Copper(II) Dichromate Complex with the N,N’-Bis(2-pyridylmethylene)butane- 1,4-diamine Schiff Base Ligand

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Synthesis, Characterisation and Crystal Structure of a Copper(II) Dichromate Complex with the N,N’-Bis(2-pyridylmethylene)butane- 1,4-diamine Schiff Base Ligand

Brajagopal Samantaa, Joy Chakrabortya, Shyamapada Shita, Stuart R. Battenb, Paul Jensenb, and Samiran Mitraa

aDepartment of Chemistry, Jadavpur University, Kolkata-700 032, West Bengal, India

bDepartment of Chemistry, Monash University, Clayton, Victoria 3168, Australia Reprint requests to Prof. Samiran Mitra. Fax: 91-033-2414 6414 / 6210.

E-mail: smitra 2002@yahoo.com

Z. Naturforsch.2007,62b,495 – 500; received October 20, 2006

The new complex Cu[L1]Cr2O7has been synthesised with the N,N-bis(2-pyridylmethylene) butane-1,4-diamine Schiff base L1, [NC5H4CH=N(CH2)4N=CHC5H4N], and characterised with el- emental analyses and different spectroscopic and electrochemical studies. The structure of the new complex has been established by single crystal X-ray diffraction. The complex crystallises in the monoclinic system with space group P21/chaving cell parametersa= 14.7(5),b= 9.22(2), c= 16.2(5) ˚A,β = 116.9(1)◦, andZ= 4. The Cr2O72−unit is bonded through one terminal oxygen donor end to the central Cu(II) chelated by the Schiff base ligand.

Key words:Copper(II), Dichromate, Schiff Base, Synthesis, X-Ray Structure

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