Structural and thermal properties of some neodymium (III) complexes

Singh, U. P.; Kumar, Rajeev

doi:10.1016/j.molstruc.2006.10.022

Cited by 26 publications

(14 citation statements)

References 40 publications

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“…Only the N2Ce1N3 bond angle (134.41°) is much larger than 90°, whereas all others are smaller than 90°, which shows the two phen ligands are not in a plane. This is different from the structure of [Nd(phen) 2Cl3OH2] · CH3OH [4]. The packing figure (figure, bottom) shows that the title compound is a supermolecular assembly formed by the p-p packing interaction of phen ligands along two perpendicular directions.…”

Section: Discussionmentioning

confidence: 72%

“…There is also a free DMF molecule out of the coordination sphere. [4]. The N1Ce1N2 bond angle (60.82°) in the title structure is almost equal to the N2Ce1N3 bond angle (60.61°) [3], but smaller than the value of N1Nd1 N2 bond angle (62.20°) [4].…”

Section: Discussionmentioning

confidence: 80%

“…[4]. The N1Ce1N2 bond angle (60.82°) in the title structure is almost equal to the N2Ce1N3 bond angle (60.61°) [3], but smaller than the value of N1Nd1 N2 bond angle (62.20°) [4]. Only the N2Ce1N3 bond angle (134.41°) is much larger than 90°, whereas all others are smaller than 90°, which shows the two phen ligands are not in a plane.…”

Section: Discussionmentioning

confidence: 82%

“…Most surprisingly, the DMF which we used as solvent is coordinated to the Ce atom through the oxygen atom. In the complex [Nd 4 (OH){(p-tert-butyltetrathiacalix [4]arene-4H)-(DMF)} 2(DMF)6(DMSO)2](NO3)3 · 3H2O [2], both DMF and DMSO solvate are also found as ligands of the rare earth atom. The cerium atom is coordinated by four nitrogen atoms from two phen ligands, one oxygen atom from DMF, and three chloride ions with the total coordination number of 8.…”

Section: Discussionmentioning

confidence: 99%

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Crystal structure of trichloro-bis(N,N′-1,10-phenanthroline) - dimethylformamide-cerium(III) dimethylformamide solvate, Ce(C12H8N2)2((CH3)2NCHO)Cl3 · (CH3)2NCHO

Jin¹,

Deng²,

Dong³

et al. 2007

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of material PrO) 2 )] (0.1033 g, 0.3 mmol) was dissolved in 10 ml methylene dichloride. The solution yielded white precipitation immediately when phen (1,10-phenanthroline, 0.1189 g, 0.6 mmol) was added after the solution was stirred for 6 h at RT. Then the suspension was stirred for another 6 h. After filtration, the filtrate was allowed to stand still. Slow evaporation of the solvent yielded yellow powder solid. Recrystallization of the solid from DMF (N,N-dimethylformamide) gave yellow crystals. DiscussionLanthanide complexes have interesting photophysical properties, and the chemistry of metal phosphonates has been a research field of rapid expansion due to their potential application in the area of catalysis, ion exchange and material chemistry. Phen (phenanthroline), usually acting as a bidentate co-ligand, is mostly used as an auxiliary ligand in the mixed-ligand complexes to enhance the fluorescent properties and control the dimensionality. We are interested in lanthanoid methylenediphosphonate complexes [1]. The single-crystal X-ray diffraction study revealed that the mononuclear complex CeCl 3 (phen) 2 DMF · DMF was obtained despite the presence of tetrakis(O-isopropyl)methylenediphosphonate (figure, top). In the title complex, phen just acts as the second ligand. The IR spectrum also illustrates only phen coordinated to the central atom besides the chloride ions and DMF. This shows that the coordination ability of CH 2 [P(O)( i PrO) 2 ] 2 is weaker than that of phen. Most surprisingly, the DMF which we used as solvent is coordinated to the Ce atom through the oxygen atom. In the complex [Nd 4 (OH){(p-tert-butyltetrathiacalix[4]arene-4H)-(DMF)} 2(DMF)6(DMSO)2](NO3)3 · 3H2O [2], both DMF and DMSO solvate are also found as ligands of the rare earth atom. The cerium atom is coordinated by four nitrogen atoms from two phen ligands, one oxygen atom from DMF, and three chloride ions with the total coordination number of 8. There is also a free DMF molecule out of the coordination sphere. The average CeN bond distance of 2.699 Å is slightly shorter than the average value of 2.713 Å for the complex [Ce 2(IDA)2(C2O4) (phen) figure (figure, bottom) shows that the title compound is a supermolecular assembly formed by the p-p packing interaction of phen ligands along two perpendicular directions.

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Section: Discussionmentioning

confidence: 72%

Section: Discussionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 99%

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Crystal structure of trichloro-bis(N,N′-1,10-phenanthroline) - dimethylformamide-cerium(III) dimethylformamide solvate, Ce(C12H8N2)2((CH3)2NCHO)Cl3 · (CH3)2NCHO

Jin¹,

Deng²,

Dong³

et al. 2007

Zeitschrift Für Kristallographie - New Crystal Structures

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“…OH 2 ] [15,16], phenylcyanamide ligands and their thallium salts [17] were synthesized using literature methods. Caution!…”

Section: Methodsmentioning

confidence: 99%

Synthesis and spectroscopy studies of new neodymium(III) complexes with cyanamide derivatives as N-Donor ligand

Khorasani-Motlagh

Noroozifar

Niroomand

et al. 2010

JICS

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Four new complexes [Nd(phen) 2 (pcyd) 3 ] (1), [Nd(phen) 2 (2-Clpcyd) 3 ] (2), [Nd(phen) 2 (2,3,5-Cl 3 pcyd) 3 ] (3) and [Nd(phen) 2 (2,3,4,5-Cl 4 pcyd) 3 ] (4) where pcyd = phenylcyanamide anion, 2-Clpcyd = (2-chlorophenyl)cyanamide anion, 2,3,5-Cl 3 pcyd = (2,3,5-threechlorophenyl)cyanamide anion and 2,3,4,5-Cl 4 pcyd = (2,3,4,5-tetrachlorophenyl)cyanamide anion, were prepared and characterized by IR, UV-Vis and 1 H NMR spectroscopy as well as elemental analysis. The 1 H NMR spectra of these complexes show broadening of ligand protons attributed to coordination of paramagnetic center.

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Synthesis, structural characterization and biological studies of neodymium(III) and samarium(III) complexes with mercaptotriazole Schiff bases

Ain

Pandey

et al. 2015

Applied Organom Chemis

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A series of neodymium(III) and samarium(III) complexes of type [Ln(L)Cl(H 2 O) 3 ] have been synthesized with Schiff bases (LH 2 ) derived from 3-(phenyl/substituted phenyl)-4-amino-5-mercapto-1,2,4-triazoles and isatin. The structures of the complexes were established using elemental analysis, molar conductivities, magnetic moments, infrared, NMR ( 1 H, 13 C) and UV-visible spectra, X-ray diffraction and mass spectrometry. The thermal behaviour of these compounds under non-isothermal conditions was investigated using thermogravimetry and differential thermogravimetry. The intermediates obtained at the end of various thermal decomposition steps were identified from elemental analysis and infrared spectral studies. All the ligands and their complexes were also screened for their antibacterial activity against Staphylococcus aureus and Bacillus subtilis and antifungal activity against Aspergillus niger, Aspergillus flavus and Colletotrichum capsici. The screening results were correlated with the structural features of the compounds.

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Structural and thermal properties of some neodymium (III) complexes

Cited by 26 publications

References 40 publications

Crystal structure of trichloro-bis(N,N′-1,10-phenanthroline) - dimethylformamide-cerium(III) dimethylformamide solvate, Ce(C12H8N2)2((CH3)2NCHO)Cl3 · (CH3)2NCHO

Crystal structure of trichloro-bis(N,N′-1,10-phenanthroline) - dimethylformamide-cerium(III) dimethylformamide solvate, Ce(C12H8N2)2((CH3)2NCHO)Cl3 · (CH3)2NCHO

Synthesis and spectroscopy studies of new neodymium(III) complexes with cyanamide derivatives as N-Donor ligand

Synthesis, structural characterization and biological studies of neodymium(III) and samarium(III) complexes with mercaptotriazole Schiff bases

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