2009
DOI: 10.1007/s10973-009-0560-z
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Thermal behaviour and spectroscopic studies of complexes of some divalent transitional metals with 2-benzoil-pyridil-izonicotinoylhydrazone

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Cited by 23 publications
(6 citation statements)
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“…5 The chromism of these complexes was discussed in terms of change in the ligand field strength and/or coordination geometry. In the context of previous research, a number of complexes of transition metals with ligands derived from 1-naphthaldehyde isonicotinoylhydrazone 6 and 2-(phenyl-2-pyridinylmethylene)--isonicotinohydrayide 7 were obtained and characterized.…”
Section: Introductionmentioning
confidence: 99%
“…5 The chromism of these complexes was discussed in terms of change in the ligand field strength and/or coordination geometry. In the context of previous research, a number of complexes of transition metals with ligands derived from 1-naphthaldehyde isonicotinoylhydrazone 6 and 2-(phenyl-2-pyridinylmethylene)--isonicotinohydrayide 7 were obtained and characterized.…”
Section: Introductionmentioning
confidence: 99%
“…The next step is followed by complete pyrolysis of ligand leaving free metallic residue at high temperatures. [73][74][75][76][77] The thermal behavior of the square pyramidal Cu(II) complex (4) occurs in three decomposition stages within temperature ranges 20-200 C, 200-256 C, and 256-1000 C. The first one is the desolvation step which is associated with weak DTG peaks at 40, 130 C attributed to a loss of 1 mol of crystallized water and complete desolvation with weight losses (found: 3.68; calc. 3.58%).…”
Section: Thermal Studiesmentioning
confidence: 99%
“…The final step involves complete ligand pyrolysis leaving free metallic residue. [73][74][75][76][77] The TG curves of complexes (2) and (3) show four decomposition steps within temperature ranges 20-220 C, 195-304 C, 290-500 C, and 395-1,000 C (Scheme 3). The first step is accompanied with estimated mass losses of 7.11% and 7.30%, respectively, attributable to complete desolvation with DTG peaks at 120 C and 167 C. After that, the decomposition of the complexes started at 220 C and 195 C, respectively, in the second step with DTG peaks at 400 C and 385 C associated with mass loses of 24.94% and 22.69%, respectively, assignable to the removal of coordinated chloride ion as well as partial ligand pyrolysis ( C 5 H 3 N) in addition to the loss of coordinated water complex 2 (Table 4).…”
Section: Thermal Studiesmentioning
confidence: 99%
“…In the continuation of our previous research [27][28][29][30][31], the present work aims to obtain some complexes resembling those of living organisms, to be used, on the one hand, as models for the study of reaction mechanisms of natural compounds and, on the other hand, to discover their physico-chemical properties and especially biological, considering permanent needs of new compounds for medicine and for the pharmaceutical industry.…”
Section: Introductionmentioning
confidence: 99%