&lt;B&gt;SYNTHESIS, SPECTRAL AND THERMAL PROPERTIES OF SOME HIGH COORDINATED COMPLEXES OF THORIUM(IV) AND DIOXOURANIUM(VI) DERIVED FROM 4[N-(2\'-HYDROXY-1\'-NAPHTHALIDENE)AMINO] ANTIPYRINETHIOSEMICARBAZONE&lt;/B&gt;

Agarwal, Rakesh; Garg, R.P.; Sindhu, S.

doi:10.4314/bcse.v19i2.21124

Cited by 3 publications

(3 citation statements)

References 38 publications

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“…The characteristic stretching bands in the IR spectra (4000–200) cm −1 were assigned by comparison with literature data [ 2 , 14 , 39 , 40 ]. The IR spectra of these complexes exhibited band in the region 1260–1238 cm −1 for v (C–O–C).…”

Section: Resultsmentioning

confidence: 99%

Syntheses, Characterization, Thermal, and Antimicrobial Studies of Lanthanum(III) Tolyl/Benzyldithiocarbonates

Andotra

Kalgotra

Pandey

2014

Bioinorganic Chemistry and Applications

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Lanthanum(III) tris(O-tolyl/benzyldithiocarbonates), [La(ROCS2)] (R = o-, m-, p-CH3C6H4 and C6H5CH2), were isolated as yellow solid by the reaction of LaCl3 ·7H2O with sodium salt of tolyl/benzyldithiocarbonates, ROCS2Na (R = o-, m-, p-CH3C6H4 and C6H5CH2), in methanol under anhydrous conditions in 1 : 3 molar ratio. These complexes have formed adducts with nitrogen and phosphorus donor molecules by straightforward reaction of these complexes with donor ligands, which have the composition of the type [La(ROCS2)3 ·nL] (where n = 2, L = NC5H5 or P(C6H5)3 and n = 1, L = N2C12H8 or N2C10H8). Elemental analyses, mass, IR, TGA, and heteronuclear NMR (1H, 13C and 31P) spectroscopic studies indicated bidentate mode of bonding by dithiocarbonate ligands leading to hexacoordinated and octacoordinated geometry around the lanthanum atom. Antimicrobial (antifungal and antibacterial) activity of the free ligands and some of the complexes have also been investigated which exhibited significantly more activity for the complexes than the free ligands.

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Section: Resultsmentioning

confidence: 99%

Syntheses, Characterization, Thermal, and Antimicrobial Studies of Lanthanum(III) Tolyl/Benzyldithiocarbonates

Andotra

Kalgotra

Pandey

2014

Bioinorganic Chemistry and Applications

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“…Due to the similarities in physical properties lanthanide exhibits multiple challenges in basic science, economics and environmental sustainability [3][4][5][6][7]. The lanthanide ions generally gave higher coordination numbers than transition elements [8][9][10][11][12][13][14]. Coordination compounds of lanthanides have an extraordinary flexibility of the coordination sphere [15].…”

Section: Introductionmentioning

confidence: 99%

Physico-Chemical and Biological Properties of Lanthanide(III) Complexes with Schiff Base of 4-Formyl Antipyrine

Rijulal,

Krishnakumar,

Krishnan

et al. 2024

ajc

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The synthesis of two novel Schiff base ligands viz. 4-[N-(3-methoxyphenylmethanamine)formyl]-2,3-dimethyl-1-phenyl-3-pyazolin-5-one (3MPMAFA) and 4-[N-(4-methoxyphenylmethanamine)formyl]-2,3-dimethyl-1-phenyl-3-pyazolin-5-one (4MPMAFA) was undertaken with the aim of synthesizing a total of 14 novel lanthanide(III) complexes. The synthesized ligands and its lanthanide(III) complexes were characterized by various analytical techniques such as elemental analysis, molecular mass, molar conductance, magnetic moment, FTIR, UV-visible and 13C NMR spectral data. According to the physico-chemical data, both Schiff bases (3MPMAFA and 4MPMAFA) appear as a neutral bidentate ligand coordinated through azomethine nitrogen and carbonyl oxygen atom. With a tentative monocapped octahedral geometry and coordination number seven, all the complexes have the same general formula, [ML2(NO3)3] (where M = La(III), Pr(III), Nd(III), Sm(III), Gd(III), Dy(III), Yb(III) and L = 3MPMAFA/4MPMAFA). The ligands and their Ln(III) complexes were evaluated for their biological activities revealing that all the lanthanide(III) complexes exhibited superior antibacterial capabilities compared to the ligands.

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“…Lanthanides and actinides ion generally present a high coordination number and the type of polyhedron obtained influences the nature of the coordinating ligands. Lanthanum (III), Thorium (IV) and Uranium (VI) with small atomic radii and a high positive charge fulfills the optimum conditions for formation of complexes with high coordination number [5][6][7] . Although metal complexes of heterocyclic Schiff base with d-block elements have been extensively studied, those of lanthanides and actinides have received less interest so far.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2014

IJPSR

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Metal Complexes of lanthanum (III), Thorium (IV) and dioxouranium (VI) with Schiff base ligand ethyl 2-{[(2E, 3Z)-4hydroxypent-3-en-2-ylidene] amino}-4, 5, 6, 7-tetrahydro-1-benzothiophene-3-carboxylate were prepared. All synthesized complexes were identified and confirmed by elemental analysis, molar conductance measurements and spectral analysis (UV-visible, IR and 1 H NMR). The conductance measurement suggested the non-electrolyte nature of the complexes and they were isolated in 1:2 (M: L) ratio. The thermal behavior (TGA/DTA) of the complexes was studied and kinetic parameter was determined by Coats-Redfern method. The data from thermo gravimetric analysis clearly indicates that decomposition of the complexes proceeds in two or three steps .The decomposition of all the complexes ended with the metal oxide. These metal complexes also showed its potential as an antibacterial agent against pathogenic strains causing urinary tract infections.

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<B>SYNTHESIS, SPECTRAL AND THERMAL PROPERTIES OF SOME HIGH COORDINATED COMPLEXES OF THORIUM(IV) AND DIOXOURANIUM(VI) DERIVED FROM 4[N-(2\'-HYDROXY-1\'-NAPHTHALIDENE)AMINO] ANTIPYRINETHIOSEMICARBAZONE</B>

Abstract: In present work, we describe the synthesis of thorium(IV) and dioxouranium(VI) coordination compounds of 4[N-(2'-hydroxy-1'-naphthalidene)amino]antipyrinethiosemicarbazone (HNAAPTS) with the general composition ThX 4 .

Cited by 3 publications

References 38 publications

Syntheses, Characterization, Thermal, and Antimicrobial Studies of Lanthanum(III) Tolyl/Benzyldithiocarbonates

Syntheses, Characterization, Thermal, and Antimicrobial Studies of Lanthanum(III) Tolyl/Benzyldithiocarbonates

Physico-Chemical and Biological Properties of Lanthanide(III) Complexes with Schiff Base of 4-Formyl Antipyrine

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