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首页> 外文期刊>Asian Journal of Chemistry: An International Quarterly Research Journal of Chemistry >Synthesis & Characterization of Some Mixed Ligand Complexes of Pd(II),Rh(III) and Pt(IV) with Carboxylic Hydrazones as Primary and Dithiooxamide as Co-ligand
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Synthesis & Characterization of Some Mixed Ligand Complexes of Pd(II),Rh(III) and Pt(IV) with Carboxylic Hydrazones as Primary and Dithiooxamide as Co-ligand

机译：Pd（II），Rh（III）和Pt（IV）混合杂配体的合成与表征，以羧酸Hy为伯，以二硫代草酰胺为共配体

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Mixed ligand complexes of Pd(II),Rh(III) and Pt(IV) with 2-acetyl pyridyl-pyrazine-carboxylic hydrozone (apph)/2-carboxaldehyde pyridyl-pyrazinecarboxylic hydroazone (cpph) as primary and dithiooxamide (dto) as co-ligand have been synthesised and characterised on the basis of analytical,conductance,spectral and thermal data.Analytical data suggested 1:1:1 (M-L/L'-L" Clx) Cly stoichiometric composition for the present complexes [where M=Pd(II),Rh(III) and Pt(IV),L=apph,L'=cpph and L"=dto,x=0 for Pd(II) complexes and x=2 for Rh (III) and Pt(IV) complexes,y=1 for Rh(III) complexes and y=2 for Pd(II) and Pt(IV) complexes].Electrolytic conductance data (DELTA M=180-184.4 ohm~(-1) cm~2 mol~(-1) for Pd(II) and Pt(IV) complexes and 120.2-124.4 ohm~(-1) cm~2 mol~(-1) for Rh(III) complexes revealed 1 :2 electrolytic nature of Pd(II) and Pt(IV) complexes and 1:1 electrolytic nature of Rh(III) complexes.IR spectra confirm the bidentate nature of all the three ligands.Reflectance spectra correspond to square planar geometry of Pd(II) and octahedral geometry of Rh(III) and Pt(IV) mixed ligand complexes.The thermal decomposition study of the complexes reveals that the hydrazone moiety is lost in 400-510°C temperatuer range.At last metallic residue is left as the ultimate product in 670-710°C temperature range.The mixed ligand complexes were screened for their antimicrobial activity against E.coli and S.aureus.The results of screening show that the complexes are more active against E.coli in comparison to S.aureus.
机译：Pd（II），Rh（III）和Pt（IV）与以2-乙酰基吡啶基-吡嗪-羧酸氢zone（apph）/ 2-甲醛基吡啶基-吡嗪羧酸hydro（cpph）和二硫代乙酰胺（dto）为配体的混合配体配合物根据分析，电导，光谱和热数据合成并表征了共配体。分析数据表明，本发明配合物的化学计量比为1：1：1（ML / L'-L“ Clx）Cly [其中M = Pd（II），Rh（III）和Pt（IV），L = apph，L'= cpph，L“ = dto，对于Pd（II）配合物x = 0，对于Rh（III）和Pt（x IV）配合物，Rh（III）配合物y = 1，Pd（II）和Pt（IV）配合物y = 2]。电导数据（ΔM = 180-184.4 ohm〜（-1）cm〜2 mol Pd（II）和Pt（IV）配合物的〜（-1）和Rh（III）配合物的120.2-124.4 ohm〜（-1）cm〜2 mol〜（-1）显示Pd（1：2的电解性质） II）和Pt（IV）配合物以及Rh（III）配合物的1：1电解性质。红外光谱确认了所有三个配体的双齿性质。到Pd（II）的正方形平面几何形状以及Rh（III）和Pt（IV）混合配体络合物的八面体几何形状。对这些络合物的热分解研究表明，moiety部分在400-510°C的温度范围内丢失。最后的金属残留物在670-710°C的温度范围内保留为最终产物。筛选了混合的配体配合物对大肠杆菌和金黄色葡萄球菌的抗菌活性，筛选结果表明该配合物对E的活性更高。 .coli与金黄色葡萄球菌相比。

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