Co-ordination compounds derived from dimethylhydrazones of cyclohexane-1,2-dione, 2-acetyl- and 2-benzoylpyridines and 4-bezoylpyridine |
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Authors: | Dimitra Demertzi David Nicholls Kim Tracey |
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Institution: | Donnan Laboratories, The University, Liverpool L69 3BX, U.K. |
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Abstract: | The 1,1-dimethylhydrazones of cyclohexane-1,2-dione (CDDMH), 2-acetylpyridine (APDMH) and 2-benzoylpyridine (2BPDMH) from tetrahedral complexes MX2L (M = Co(II), Zn(II); X = Cl, Br) in which the ligand is chelating through the methylene nitrogen atoms (CDDMH) or one methylene and one pyridine nitrogen atom (APDMH, 2BPMDH). Octahedral complexes CoX2L2 (X = Cl, NCS; L = APDMH, 2BPDMH) have also been isolated but no tris-ligand complexes. The ligand 4-benzoylpyridine-dimethylhydrazone (4BPDMH) does not chelate but forms tetrahedral complexes MX2(4BPDMH)2 in which the unidentate ligand co-ordinates through the pyridine nitrogen atom. |
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Keywords: | Author to whom correspondence should be addressed |
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