Versatility of 2,6-diacetylpyridine (dap) hydrazones in stabilizing uncommon coordination geometries of Mn(II): Synthesis, spectroscopic, magnetic and structural characterization
Five seven- or eight-coordinate manganese complexes of hydrazone ligands have been prepared. Three seven-coordinate neutral MnII complexes: [Mn(dapA2)]n (1), [Mn(dapB2)(H 2O)2] (2), [Mn(dap
Naskar, Subhendu,Mishra, Dipankar,Chattopadhyay, Shyamal Kumar,Corbella, Montserrat,Blake, Alexander J.
p. 2428 - 2435
(2007/10/03)
Investigation into Aroylhydrazones as Chelating Agents. Synthesis and Structural Characterization of a Tin(IV) Complex with 2,6-Diacetylpyridine Bis(salicyloylhydrazone)
2,6-Diacetylpyridine bis(salicyloylhydrazone) (H2daps) has been synthesized and its co-ordinating properties have been investigated in the complex n2(daps)> by means of spectroscopic (i.r. and u.v.) and X-ray diffractometric techniques.Crystals of the compound are orthorhombic, with a = 18.332(10), b = 17.187(11), c = 9.161(5) Angstroem; Z = 4, space group P212121.A total of 1 936 observed reflections have been measured by single-crystal diffractometry and refined by full-matrix least squares to R 0.0402.The quinquedentate behaviour and the near planarity of the organic ligand favours a pentagonal-bipyramidal arrangementaeound tin with the two propyl groups occupying the axial sites.
Pelizzi, Corrado,Pelizzi, Giancarlo
p. 1970 - 1973
(2007/10/02)
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