Summary
The Schiff bases a-(C5H4N)CMe=NNHCOR (R = Ph, 2-thienyl or Me), prepared by condensation of 2-acetylpyridine with the acylhydrazines RCONHNH2, coordinate in the deprotonated iminol form to yield the octahedral complexes, M[NNO]2 M = Co or Ni; [NNOH] = Schiff base and the square-planar complexes, Pd[NNO]Cl. The Schiff bases also coordinate in the neutral keto form yielding the octahedral complexes (M[NNOH]2)Z2 (M = Ni, Co or Fe; Z = C104, BF4 or N03) and complexes of the type M[NNOH]X2 (M = Ni, Co, Fe or Cu; X = Cl, Br or NCS). Spectral and x-ray diffraction data indicate that the complexes M[NNOH]X2 (M = Ni or Fe) are polymeric octahedral, as are the corresponding cobalt complexes having R = 2-thienyl. However, the cobalt complexes Co[NNOH]X2 (X = CI or Br; R = Ph or Me) and the copper complexes Cu[NNOH]CI2 (R = Ph, 2-thienyl or Me) are five-coordinate, while the thiocyanato complex Co[NNOH](NCS)2 (R = 2-thienyl) is tetrahedral.
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References
J. F. Alcock, R. J. Baker and A. A. Diamancis,Austral. J. Chem., 25. 280 (1972).
L. Sacconi,Z. annrg. allgem. Chem., 275, 245 (1954).
L. Sacconi,J. Am. Chem. Soc.,76, 3400 (1954).
I. Sacconi, G. Lombardo and P. Paoletti,J. Inorg. Nucl. Chem., 8, 217 (1958).
R. M. Issa, R. P. Iskander and M. F. El-Shazly,Z. anorg. allgem. Chem., 354. 98 (1967).
H. Ohta,Bull. Chem. Soc. Japan, 33, 202 (1960).
P. W. Ball,Coordination Chem. Rev., 4, 361 (1969).
J. R. Allkins and P. J. Hendra,J. Chem. Soc. A, 1325 (1967).
R. J. H. Clark and C. S. Williams,Inorg. Chem., 4, 350 (1965).
D. M. Adams and P. J. Chandler,Chem. Commun., 69 (1966) 756.
D. M. Adams,Metal-Ligand and Related Vibrations, Arnold, London, 1967, pp. 60, 74, 75.
S. E. Livingstone and J. D. Nolan,Inorg. Chem., 7, 1447 (1968).
A. B. P. Lever,Inorganic Electronic Spectroscopy, Elsevier, Amsterdam, 1968, p. 249 et seq.
W. J. Geary,Coordination Chem. Rev., 7, 81 (1971).
B. M. Gatehouse, S. E. Livingstone and R. S. Nyholm,J. Chem. Soc., 4222 (1957).
B. M. Gatehouse, S. E. Livingstone and R. S. Nyholm,J. Inorg. Nucl. Chem., 8, 75 (1958).
K. Nakamoto,Infrared Spectra of Inorganic and Coordination Compounds, 2nd Edit., Wiley-Interscience, New York, 1970, p. 187.
L. Sacconi, P. Nannelli and U. Campigli,Inorg. Chem., 4, 818 (1965).
L. Sacconi, P. Nannelli, N. Nardi and U. Campigli,Inorg. Chem., 4, 943 (1965).
M. Ciampolini and J. Gelsomini,Inorg. Chem., 6, 1821 (1967).
L. Sacconi and I. Bertini,Inorg. Chem., 7, 1178 (1968).
S. E. Livingstone and J. D. Nolan,Austral. J. Chem., 22, 1817 (1969).
M. Aktar Malik and D. J. Phillips,J. Inorg. Nucl. Chem., 36, 2229 (1974).
L. Sacconi, M. Ciampolini and G. P. Speroni,Inorg. Chem., 4, 1116 (1965).
P. S. K. Chia and S. E. Livingstone,Austral. J. Chem., 22, 1613 (1969).
L. Sacconi,Coordination Chem. Rev., 1, 192 (1966).
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Livingstone, S.E., Oluka, J.E. Chelate complexes of some NNO tridentate Schiff bases with iron(II), cobalt(II), nickel(II) and copper(II). Transition Met Chem 3, 261–267 (1978). https://doi.org/10.1007/BF01393565
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DOI: https://doi.org/10.1007/BF01393565