Structural and spectral studies on four coordinate copper(II) complexes of 2-benzoylpyridine N(4),N(4)-(butane-1,4-diyl)thiosemicarbazone

Sreekanth, Anandaram; Kurup, M.R. Prathapachandra

doi:10.1016/j.poly.2003.07.011

Cited by 145 publications

(53 citation statements)

References 29 publications

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“…The observed magnetic moments of all these complexes (Table 1) are in 1.81-1.92 BM range. The observed magnetic moments of the complexes are consistent with the presence of a single unpaired electron [17,18].…”

Section: Resultssupporting

confidence: 61%

Synthesis, Spectral and Biological Properties of Copper (Ii) Complexes of Thiosemicarbazones of Schiff Bases Derived From 4-Aminoantipyrine and Aromatic Aldehydes.

Agarwal¹,

Singh²,

Sharma³

2008

Reviews in Inorganic Chemistry

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We have synthesized a novel series of Schiff bases by condensation of 4-aminoantipyrine and various aromatic aldehydes followed by reaction with thiosemicarbazide. These thiosemicarbazones are potential ligands toward transition metal ions. . These complexes were characterized through elemental analysis, molecular weight, electrical conductance, infrared, electronic spectra, and magnetic susceptibilities at room temperature. Copper(II) complexes with BAAPTS and MBAAPTS were screened for antibacterial and antifungal properties and have exhibited potential activity. Thermal stabilities of two representative complexes were also investigated.

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Section: Resultssupporting

confidence: 61%

Synthesis, Spectral and Biological Properties of Copper (Ii) Complexes of Thiosemicarbazones of Schiff Bases Derived From 4-Aminoantipyrine and Aromatic Aldehydes.

Agarwal¹,

Singh²,

Sharma³

2008

Reviews in Inorganic Chemistry

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“…In these Cu(II) complexes, tensor values of g// > g⊥ > 2.0023 are consistent with a dx 2 −y 2 ground state [45]. The EPR spectrum of complex 4 ( Figure 3) both at room temperature (298 K) as well as at 77 K, is typical for an orthorhombic symmetry center, for which the evaluated parameters are: g1 = 2.011; g2 = 2.193; g3 = 2.409.…”

Section: Epr Spectramentioning

confidence: 54%

Synthesis and Characterization of Novel Cu(II), Pd(II) and Pt(II) Complexes with 8-Ethyl-2-hydroxytricyclo(7.3.1.02,7)tridecan-13-one-thiosemicarbazone: Antimicrobial and in Vitro Antiproliferative Activity

et al. 2016

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New Cu(II), Pd(II) and Pt(II) complexes, (Cu(L)(H 2 O) 2 (OAc)) ( 1 ), (Cu(HL)(H 2 O) 2 (SO 4 )) ( 2 ), (Cu(L)(H 2 O) 2 (NO 3 )) ( 3 ), (Cu(L)(H 2 O) 2 (ClO 4 )) ( 4 ), (Cu(L) 2 (H 2 O) 2 ) ( 5 ), (Pd(L)(OAc))H 2 O ( 6 ), and (Pt(L) 2 ) ( 7 ) were synthesized from 8-ethyl-2-hydroxytricyclo(7.3.1.0 2,7 )tridecan-13-one thiosemicarbazone ( HL ). The ligand and its metal complexes were characterized by IR, 1 H-NMR, 13 C-NMR, UV-Vis, FAB, EPR, mass spectroscopy, elemental and thermal analysis, magnetic susceptibility measurements and molar electric conductivity. The free ligand and the metal complexes have been tested for their antimicrobial activity against E. coli , S. enteritidis , S. aureus , E. faecalis, C. albicans and cytotoxicity against the NCI-H1573 lung adenocarcinoma, SKBR-3 human breast, MCF-7 human breast, A375 human melanoma and HL-60 human promyelocytic leukemia cell lines. Copper complex 2 exhibited the best antiproliferative activities against MCF-7 human breast cancer cells. A significant inhibition of malignant HL-60 cell growth was observed for copper complex 2 , palladium complex 6 and platinum complex 7 , with IC 50 values of 1.6 µM, 6.5 µM and 6.4 µM, respectively.

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“…In the nitrato complex, the three bands observed at 1448, 1354 and 1130 cm À1 indicate the m 4 , m 1 and m 2 modes of the nitrato group. The fact that the nitrato group is terminally bonded is understood from the separation of 94 cm À1 between its two highest frequency bands mentioned above [28].…”

mentioning

confidence: 99%

Synthesis, spectral characterization and crystal structure of copper(II) complexes of 2-benzoylpyridine-N(4)-phenylsemicarbazone

et al. 2011

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(9) of 2-benzoylpyridine-N(4)-phenyl semicarbazone (HL) have been synthesized and physico-chemically characterized. The tridentate character of the semicarbazone is inferred from IR spectra. Based on the EPR studies, spin Hamiltonian and bonding parameters have been calculated. The g values, calculated for all the complexes in frozen DMF, indicate the presence of the unpaired electron in the d x 2 Ày 2 orbital. The structure of the compound, [Cu 2 L 2 (OAc) 2 ] (1a) has been resolved using single crystal X-ray diffraction studies. The crystal structure revealed monoclinic space group P2 1 /n. The coordination geometry about the copper(II) in 1a is distorted square pyramidal with one pyridine nitrogen atom, the imino nitrogen, enolate oxygen and acetate oxygen in the basal plane, an acetate oxygen form adjacent moiety occupies the apical position, serving as a bridge to form a centrosymmetric dimeric structure.

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Structural and spectral studies on four coordinate copper(II) complexes of 2-benzoylpyridine N(4),N(4)-(butane-1,4-diyl)thiosemicarbazone

Cited by 145 publications

References 29 publications

Synthesis, Spectral and Biological Properties of Copper (Ii) Complexes of Thiosemicarbazones of Schiff Bases Derived From 4-Aminoantipyrine and Aromatic Aldehydes.

Synthesis, Spectral and Biological Properties of Copper (Ii) Complexes of Thiosemicarbazones of Schiff Bases Derived From 4-Aminoantipyrine and Aromatic Aldehydes.

Synthesis and Characterization of Novel Cu(II), Pd(II) and Pt(II) Complexes with 8-Ethyl-2-hydroxytricyclo(7.3.1.02,7)tridecan-13-one-thiosemicarbazone: Antimicrobial and in Vitro Antiproliferative Activity

Synthesis, spectral characterization and crystal structure of copper(II) complexes of 2-benzoylpyridine-N(4)-phenylsemicarbazone

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