Thermoanalytical investigations of 4-methylpiperazine-1-carbodithioic acid ligand and its iron(III), cobalt(II), copper(II) and zinc(II) complexes

Kalia, S. B.; Kaushal, G.; Lumba, K.; Choudhary, Priyanka

doi:10.1007/s10973-007-8331-1

Cited by 15 publications

(2 citation statements)

References 14 publications

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“…The DSC curve has revealed an endothermic peak at 165°C (Fig. 6), which may be attributed to the sublimation followed by its decomposition in the form of volatile products such as amine, 1-ethylpiperazine and carbon disulphide thus exhibiting the similar decomposition pattern as for 4-methylpiperazine-1-carbodithioic acid in our earlier report [13]. An initial mass loss of 40.30 % in the range 120-160°C has been found to be well in agreement to the theoretical value of 40.31 % attributed for the loss of CS 2 molecule and thus supports the suggested pathway.…”

Section: Tg/dsc Studysupporting

confidence: 66%

Physico-chemical investigations and thermal degradation behaviour of 4-ethylpiperazine-1-carbodithioic acid complexes of cobalt(II)

Kalia

Kumar

Sharma

et al. 2015

J Therm Anal Calorim

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Some new cobalt(II) carbodithioates, viz. [Co (4-EtPipzcdtH) m ]X n (4-EtPipzcdtH = 4-ethylpiperazine-1-carbodithioic acid, X = Cl, Br, ClO 4 , NO 3 and CH 3 COO when m = n = 2 and SO 4 , CO 3 when m = 2 and n = 1), have been synthesized and characterized. Infrared and UVVis spectral data along with room temperature magnetic behaviour (2.50-2.85 B.M.) indicate chelating bidentate mode of coordination of ligand, 4-EtPipzcdtH with four coordination around Co(II). 1 H NMR and ESMS of [Co(4-EtPipzcdtH) 2 ]Cl 2 further support its structure. Molar conductance study shows 1:2 electrolytic behaviour for complexes with Cl, Br, ClO 4 , NO 3 and CH 3 COO as counter anions, while 1:1 electrolytic behaviour for CO 3 and SO 4 as counter anions. Ligand and its complexes have also been studied using non-isothermal techniques (TG and DSC). The anion has been found to play pronounced effect on the nature of thermal decomposition products. The DSC curves of the complexes displayed very sharp exothermic peaks.

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Section: Tg/dsc Studysupporting

confidence: 66%

Physico-chemical investigations and thermal degradation behaviour of 4-ethylpiperazine-1-carbodithioic acid complexes of cobalt(II)

Kalia

Kumar

Sharma

et al. 2015

J Therm Anal Calorim

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“…The thermal stability of the complex was slightly higher than that of the free ligand since the increase in metal content makes a complex more resistant to degradation. 24 The data showed that complex 2 is degraded into a final residual mass (end product) equivalent to SnO 2 with the evolution of neutral organic molecules of H 2 O, 2CO, C 2 H 2 , NH 3 and biphenyl as volatile components. The data thus verifies the proposed structure of complex 2 having its close resemblance with complex 1.…”

Section: Thermogravimetric Analysismentioning

confidence: 98%

Diorganotin(IV) Complexes with Monohydrate Disodium Salt of Iminodiacetic Acid: Synthesis, Characterization, Crystal Structure and Biological Activities

Hussain¹,

Ali

Shahzadi

et al. 2015

J Chinese Chemical Soc

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Diorganotin(IV) derivatives have been synthesized by the reaction of R2SnL2 (R=n‐Bu 1, Ph 2) with monohydrate disodium salt of iminodiacetic acid (Na2L) in 1 : 1 M/L ratio under reflux conditions. The compounds have been characterized by FT‐IR, NMR (1H and 13C) spectoscopy, electron ionization mass spectrometry (EIMS), thermogravimetric analyses (TGA) and single crystal XRD. FTIR data indicates a mono‐dentate binding mode of the carboxylic acid group as well as participation of the amino nitrogen and aqua oxygen in coordination with organotin(IV) moieties. NMR data demonstrates a tetra‐coordinated environment around tin(IV) in solution. Mass spectrometric and thermogravimetric analyses verify the close similarities between the molecular structures of both complexes. The thermal stability of diphenyltin(IV) derivative (2) was found slightly higher than that of the free ligand (Na2L). Single crystal X‐ray analysis of the complex 1 have shown a hexa‐coordinated geometry around Sn(IV) with trans configuration. There are evidences for the existence of intermolecular hydrogen bonding in the structure of the complexes. The products displayed significant antibacterial and antifungal activities in contrast to the biologically inactive ligand precursor. However, the hemolytic cytoxicity of the complexes was comparatively high than the free ligand.

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Thermodynamics of mixed-ligand complex formation of copper (II) ethylenediaminetetraacetate with hexamethylenediamine in an aqueous solution

Пырэу

Козловский

2009

J Therm Anal Calorim

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Thermoanalytical investigations of 4-methylpiperazine-1-carbodithioic acid ligand and its iron(III), cobalt(II), copper(II) and zinc(II) complexes

Cited by 15 publications

References 14 publications

Physico-chemical investigations and thermal degradation behaviour of 4-ethylpiperazine-1-carbodithioic acid complexes of cobalt(II)

Physico-chemical investigations and thermal degradation behaviour of 4-ethylpiperazine-1-carbodithioic acid complexes of cobalt(II)

Diorganotin(IV) Complexes with Monohydrate Disodium Salt of Iminodiacetic Acid: Synthesis, Characterization, Crystal Structure and Biological Activities

Thermodynamics of mixed-ligand complex formation of copper (II) ethylenediaminetetraacetate with hexamethylenediamine in an aqueous solution

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