Summary
Divalent nickel, cobalt and copper salts react with 2,6-diaminopyridine and acetylacetone to form complexes containing a 16-membered N6 tetradentate macrocyclic ligand. The complexes are characterised as distorted octahedra of the M(TML)X2 type where M=nickel(II), cobalt(II) and copper(II); TML=tetradentate macrocyclic ligand and X=Cl, Br, NO3 or NCS. The ligand coordinates through all the four azomethine nitrogen atoms which are bridged by acetylacetone moieties. Pyridine nitrogen does not participate in coordination, a fact supported by far i.r. studies. The magnetic, electronic and i.r. spectral studies indicate that the complexes have lower symmetries and the amounts of distortion calculated in terms of DT/DQ applying normalised spherical harmonic Hamiltonian theory indicate that these complexes are moderately distored.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
N. F. Curtis,Coord. Chem. Rev., 3, 3 (1968).
L. F. Lindoy and D. H. Busch in W. L. Jolly (Ed.),Preparative Inorg. Reactions, 6, 1 (1971).
B.E. Douglas,Inorg. Synthesis, 18, 1 (1978).
V. B. Rana and M. P. Teotia,Ind. J. Chem., 19A, 267 (1980).
V. B. Rana and M. P. Teotia,XX ICCC, (1979).
V. B. Rana, S. K. Sangal, S. P. Gupta and S. K. Sahni,J. Ind. Chem. Soc., 54, 200 (1977).
S. K. Sahni, S. K. Sangal, S. P. Gupta and V. B. Rana,J. Inorg. Nucl. Chem., 39, 1098 (1977).
V. B. Rana, J. N. Gurtu and M. P. Teotia,Ind. J. Chem., 19A, 133 (1980).
C.N.R. Rao,Chemical Applications of Infrared Spectroscopy, Academic Press, New York, 1963.
P. E. Figgins and D. H. Busch,J. Phys. Chem., 65, 2236 (1961).
N. S. Gill, R. H. Nutall, D. E. Scaife, and O.W.A. Sharp,J. Inorg. Nucl Chem., 18, 79 (1961).
K. Nakamoto,Infrared Spectra of Inorganic and Coordination Compounds, Wiley Interscience, New York, 1970.
R. J. H. Clark and C. S. Williams,Inorg. Chem., 4, 350 (1965).
A. B. P. Lever, E. Mantovani and B. S. Ramaswamy,Canad. J. Chem., 49, 1957 (1971).
D. A. Baldwin, A. B. P. Lever and R. V. Parish,Inorg. Chem., 8, 107 (1969).
V. B. Rana, M. P. Swami, P. C. Jain and A. K. Srivastava,Acta Chim., 80, 19 (1974).
A. B. P. Lever,Inorganic Electronic Spectroscopy Elsevier, Amsterdam, 1968.
R. A. D. Wentworth and T. S. Piper,Inorg. Chem., 4, 709, 1524 (1964).
D. A. Rowley and R. S. Drago,Inorg. Chem., 6, 1092 (1967);7, 795 (1968).
J. C. Donini, B. R. Hollebone and A. B. P. Lever,Progr. Inorg. Chem., 22, 225 (1977).
M. J. M. Campbell and R. Grezeskoviak,Inorg. Nucl. Chem. Let., 5, 27 (1969).
A. B. P. Lever and E. Mantovani,Inorg. Chem., 10, 817 (1971).
M. L. Goodgame and L. I. B. Haines,J. Chem. Soc. A, 176 (1966).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Rana, V.B., Singh, D.P., Singh, P. et al. Divalent nickel, cobalt and copper complexes of a tetradentate N6 macrocyclic ligand. Transition Met Chem 6, 36–39 (1981). https://doi.org/10.1007/BF01143465
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01143465