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Acknowledgement
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Inorg. Chem. 36 (1997) 2463;
The work is supported by a grant from DST and
CSIR, New Delhi, India. D. Mandal thanks IIT Kanpur
for the Senior Research Fellowship. We thank Dr. U.
Tiwari for help in synthesizing a few complexes.
(b) R. Dreos, G. Nardin, L. Randaccio, P. Siega, G. Tauzher, V.
Vrdoljak, Inorg. Chem. 40 (2001) 5536;
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Appendix A. Supplementary data
(b) B.D. Gupta, D. Mandal, R. Yamuna, Unpublished work.
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(1998) 1.
The cif files have been deposited with the Cambridge
Crystallographic Data Centre, CCDC number for 6
and 11 are 260523 and 260524, respectively. Copies
of the data can be obtained free of charge from the
Director, CCDC, 12 Union Road, Cambridge CB2
1EX, UK (fax: +44-1223-336033; email: deposit@ccdc.
plementary data associated with this article can be
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