Microwave assisted synthesis, spectroscopic and antibacterial studies of bis(cyclopentadienyl)hafnium(IV) derivatives with benzil bis(aroyl hydrazones)

Shilpi Sinha; Akhilesh K. Srivastava; Soumitra K. Sengupta; Om P. Pandey

doi:10.1007/s11243-008-9080-0

Microwave assisted synthesis, spectroscopic and antibacterial studies of bis(cyclopentadienyl)hafnium(IV) derivatives with benzil bis(aroyl hydrazones)

Shilpi Sinha, Akhilesh K. Srivastava, Soumitra K. Sengupta, Om P. Pandey

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The reactions of (η⁵-C₅H₅) ₂HfCl₂ with benzil bis(hydrazones) (LH₂), derived from benzil and aromatic acid hydrazides (benzoic, 2-chlorobenzoic, 4-chlorobenzoic, 2-methylbenzoic or 4-methoxybenzoic) have been studied in anhydrous tetrahydrofuran in the presence of n-butylamine by both conventional methods and by microwave heating. Binuclear complexes of type [{(η⁵-C₅H₅)₂HfCl} ₂(L)] were obtained in both cases. Tentative structural conclusions are drawn for the reaction products based upon analyses, electrical conductance, magnetic moment and spectral (UV-vis, IR, ¹H NMR and ¹³C NMR) data. A FAB-mass spectrum of one compound was also recorded to confirm the binuclear structures. Studies were conducted to assess the growth inhibiting potential of the complexes and free ligands against various bacterial strains.

Original language	English
Pages (from-to)	563-567
Number of pages	5
Journal	Transition Metal Chemistry
Volume	33
Issue number	5
DOIs	https://doi.org/10.1007/s11243-008-9080-0
State	Published - Aug 2008
Externally published	Yes

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title = "Microwave assisted synthesis, spectroscopic and antibacterial studies of bis(cyclopentadienyl)hafnium(IV) derivatives with benzil bis(aroyl hydrazones)",

abstract = "The reactions of (η5-C5H5) 2HfCl2 with benzil bis(hydrazones) (LH2), derived from benzil and aromatic acid hydrazides (benzoic, 2-chlorobenzoic, 4-chlorobenzoic, 2-methylbenzoic or 4-methoxybenzoic) have been studied in anhydrous tetrahydrofuran in the presence of n-butylamine by both conventional methods and by microwave heating. Binuclear complexes of type [{(η5-C5H5)2HfCl} 2(L)] were obtained in both cases. Tentative structural conclusions are drawn for the reaction products based upon analyses, electrical conductance, magnetic moment and spectral (UV-vis, IR, 1H NMR and 13C NMR) data. A FAB-mass spectrum of one compound was also recorded to confirm the binuclear structures. Studies were conducted to assess the growth inhibiting potential of the complexes and free ligands against various bacterial strains.",

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T1 - Microwave assisted synthesis, spectroscopic and antibacterial studies of bis(cyclopentadienyl)hafnium(IV) derivatives with benzil bis(aroyl hydrazones)

AU - Sinha, Shilpi

AU - Srivastava, Akhilesh K.

AU - Sengupta, Soumitra K.

AU - Pandey, Om P.

PY - 2008/8

Y1 - 2008/8

N2 - The reactions of (η5-C5H5) 2HfCl2 with benzil bis(hydrazones) (LH2), derived from benzil and aromatic acid hydrazides (benzoic, 2-chlorobenzoic, 4-chlorobenzoic, 2-methylbenzoic or 4-methoxybenzoic) have been studied in anhydrous tetrahydrofuran in the presence of n-butylamine by both conventional methods and by microwave heating. Binuclear complexes of type [{(η5-C5H5)2HfCl} 2(L)] were obtained in both cases. Tentative structural conclusions are drawn for the reaction products based upon analyses, electrical conductance, magnetic moment and spectral (UV-vis, IR, 1H NMR and 13C NMR) data. A FAB-mass spectrum of one compound was also recorded to confirm the binuclear structures. Studies were conducted to assess the growth inhibiting potential of the complexes and free ligands against various bacterial strains.

AB - The reactions of (η5-C5H5) 2HfCl2 with benzil bis(hydrazones) (LH2), derived from benzil and aromatic acid hydrazides (benzoic, 2-chlorobenzoic, 4-chlorobenzoic, 2-methylbenzoic or 4-methoxybenzoic) have been studied in anhydrous tetrahydrofuran in the presence of n-butylamine by both conventional methods and by microwave heating. Binuclear complexes of type [{(η5-C5H5)2HfCl} 2(L)] were obtained in both cases. Tentative structural conclusions are drawn for the reaction products based upon analyses, electrical conductance, magnetic moment and spectral (UV-vis, IR, 1H NMR and 13C NMR) data. A FAB-mass spectrum of one compound was also recorded to confirm the binuclear structures. Studies were conducted to assess the growth inhibiting potential of the complexes and free ligands against various bacterial strains.

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IS - 5

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Microwave assisted synthesis, spectroscopic and antibacterial studies of bis(cyclopentadienyl)hafnium(IV) derivatives with benzil bis(aroyl hydrazones)

Abstract

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