Structure of aquachloro[tris(2-aminoethyl)amine]nickel(II) chloride monohydrate

Marzotto, A.; Clemente, D. A.; Valle, G.

doi:10.1107/s0108270193001416

Cited by 15 publications

(28 citation statements)

References 2 publications

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“…Effective magnetic moments, per mol, were calcu-lated using the relationship µ eff = 2.828(χ m T)  ¹ ² where χ m is the susceptibility per mol of complex. 15 The structure of the [Cr(ox) 3 ] 3Ϫ anion is essentially the same as seen previously 16 The bimetallic complex has a number of waters of crystallization, two of which are disordered over three sites. The most notable hydrogen bonding interaction is that between a chelating oxygen of [Cr(ox 4 shows a PLATON drawing of the cation which has two tren ligands bound in a tetradentate manner capping each metal ion.…”

Section: Magnetic Studiesmentioning

confidence: 59%

“…Each tren ligand bears a pendant primary amine which is co-ordinated to a terminal nickel() ion. The terminal enantiomeric pair of octahedral nickel() ions are each bound to a single tetradentate tren ligand, a pendant amine from the central Ni 15 The structure of the [Cr(ox) 3 ] 3Ϫ anion is essentially the same as seen previously (2) 96.619 (7) 3323.1 (7) 16 The bimetallic complex has a number of waters of crystallization, two of which are disordered over three sites. The most notable hydrogen bonding interaction is that between a chelating oxygen of [Cr(ox) 3 Fig.…”

Section: Magnetic Studiesmentioning

confidence: 83%

“…The [Ni(tren) 2 ] 2ϩ fragment is located on a centre of symmetry, but disordered over two positions. The [Ni(tren)(RNH 2 ) 2 ] 2ϩ moiety is situated on a mirror plane that passes through the atoms Ni(1), N(13), C(14) and C(15). However, this plane does not coincide with any local symmetry element of the complex, so all atoms in this fragment not lying on this mirror plane are disordered.…”

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confidence: 99%

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Nickel complexes with tris(2-aminoethyl)amine (tren): [Ni3(tren)4(H2O)2][Cr(ox)3]2·6H2O (ox = oxalate), {[Ni2(tren)3][ClO4]4·H2O}n, and [Ni2(tren)2(aepd)][ClO4]4·2H2O (aepd = N-(2-aminoethyl)pyrrolidine-3,4-diamine). Synthesis, structure and magnetism †

Masters¹,

Bernhardt²,

Gahan³

et al. 1999

J. Chem. Soc., Dalton Trans.

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Nickel complexes with tris(2-aminoethyl)amine (tren): [Ni 3 (tren) 4 (H 2 O) 2 ][Cr(ox)3 ] 2 ؒ6H 2 O (ox ‫؍‬ oxalate), {[Ni 2 (tren) 3 ][ClO 4 ] 4 ؒH 2 O} n , and [Ni 2 (tren) 2 (aepd)][ClO 4 ] 4 ؒ2H 2 O (aepd ‫؍‬ N-(2-aminoethyl)pyrrolidine-3,4-diamine). Synthesis, structure and magnetism † Reaction of K 3 [Cr(ox) 3 ] (ox = oxalate) with nickel() and tris(2-aminoethyl)amine (tren) in aqueous solution resulted in isolation of the bimetallic assembly [Ni 3 (tren) 4 (H 2 O) 2 ][Cr(ox) 3 ] 2 ؒ6H 2 O. The polymeric complex {[Ni 2 (tren) 3 ]-[ClO 4 ] 4 ؒH 2 O} n has been prepared by reaction of nickel() perchlorate and tren in aqueous solution. From the same reaction mixture the complex [Ni 2 (tren) 2 (aepd)][ClO 4 ] 4 ؒ2H 2in which a bridging tren ligand contains a carbon-carbon bond between two arms forming a substituted pyrrolidine, has been isolated. The complexes have been characterized by X-ray crystallography. The magnetic susceptibility (300-4.2 K) and magnetization data (2, 4 K, H = 0-5 T) for {[Ni 2 (tren) 3 ][ClO 4 ] 4 ؒH 2 O} n (300 K , 4.23 µ B ) exhibit evidence of weak antiferromagnetic coupling and zero field splitting (2J = Ϫ1.8 cm Ϫ1 ; |D| = 2 cm Ϫ1 ) at low temperature. For [Ni 3 (tren) 4 (H 2 O) 2 ][Cr(ox) 3 ] 2 ؒ6H 2 O the susceptibility data at 300 K are indicative of uncoupled nickel() and chromium() sites with zero-field splitting and intramolecular antiferromagnetic coupling predicted at low temperature.

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Section: Magnetic Studiesmentioning

confidence: 59%

Section: Magnetic Studiesmentioning

confidence: 83%

mentioning

confidence: 99%

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Nickel complexes with tris(2-aminoethyl)amine (tren): [Ni3(tren)4(H2O)2][Cr(ox)3]2·6H2O (ox = oxalate), {[Ni2(tren)3][ClO4]4·H2O}n, and [Ni2(tren)2(aepd)][ClO4]4·2H2O (aepd = N-(2-aminoethyl)pyrrolidine-3,4-diamine). Synthesis, structure and magnetism †

Masters¹,

Bernhardt²,

Gahan³

et al. 1999

J. Chem. Soc., Dalton Trans.

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“…A second series of complexes 6 has been synthesized from ligands 1−4 and nickel dichloride in water. In this series, the complex 6a with the ligand 1 has been described previously 2. In both series, the ligand topology is systematically varied by the stepwise insertion of methylene groups into the ligand arms.…”

Section: Resultsmentioning

confidence: 99%

“…Preparation of Nickel Complexes from NiCl 2 ·6H 2 O: The preparation of the previously synthesized2 6a is described as an example. To a solution of NiCl 2 ·6H 2 O (236 mg, 1 mmol) in methanol (5 mL) was added 1 (146 mg, 1 mmol).…”

Section: Methodsmentioning

confidence: 99%

cis-Octahedral Nickel(II) Complexes with Symmetric and Unsymmetric Tripodal Tetraamine Ligands

Ochs

Hahn

Lügger

2001

Eur. J. Inorg. Chem.

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Nickel(II) complexes with the aliphatic tripodal tetraamine ligands N(CH2CH2NH2)3 (tren, 1), N[(CH2CH2CH2NH2)(CH2CH2NH2)2] (baep, 2), N[(CH2CH2CH2NH2)2(CH2CH2NH2)] (abap, 3), and N(CH2CH2CH2NH2)3 (trpn, 4) are reported. The tripodal tetradentate N4 ligands 1−4 react with Ni(NO3)2·6H2O in acetonitrile or methanol to give the blue nickel(II) complexes [Ni(1)(η1‐NO3)2] (5a), [Ni(2)(η1‐NO3)2] (5b), [Ni(3)(η2‐NO3)]NO3·CH3CN (5c·CH3CN), and [Ni(4)(η2‐NO3)]NO3·CH3OH (5d·CH3OH). With NiCl2·6H2O, the complexes [Ni(1)Cl(H2O)]Cl·H2O (6a), [Ni(2)(μ‐Cl)2Ni(2)]Cl2·2CH3OH (6b·2CH3OH), [Ni(3)Cl(H2O)]Cl (6c), and [Ni(4)(H2O)2]Cl2·H2O (6d·H2O) are obtained. The molecular structures of complexes 5a−d and 6b−d have been determined by X‐ray diffraction analysis and they are compared with the molecular structure of the previously characterized complex 6a. Complexes 5a−d and 6b−d exhibit octahedrally coordinated nickel atoms. The tripodal ligands occupy four of the six coordination sites in a pseudo‐facial manner. Complexes of the unsymmetrical ligands 2 and 3 possess both five‐ and six‐membered chelate rings. The extension of the ligand arms in 1−4 leads to a systematic variation in the geometric and UV/Vis spectroscopic properties of the complexes depending on the size of the chelate rings formed by the ligands.

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A pseudo trinuclear nickel–sodium complex containing tris(8‐methyl‐2‐oxo‐quinolidineamino ethylamine): Synthesis, spectral characterization, X‐ray crystallography and in vitro biological evaluations

Naveen

Pandiyan

Anu

et al. 2020

Applied Organom Chemis

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A new mixed nickel–sodium complex has been synthesized from Ni(ClO4)2 and tris(8‐methyl 2‐oxo‐quinolidine amino ethylamine) with a 1:1 molar ratio in methanol and has been characterized by various analytical, spectroscopy and X‐ray diffraction studies which confirmed an octahedral geometry around the nickel ion. Further, structural optimization of the complex was performed using DFT calculations. The ligand and complex were evaluated for their binding affinity with CT‐DNA and an intercalative type of binding interaction was proposed from the absorption and fluorescence titration experiments. Albumin binding interaction of the ligand and complex was determined by absorption, fluorescence and synchronous spectral techniques at room temperature, suggesting the static quenching mechanism of BSA with the compounds. Antioxidant studies revealed the radical scavenging potential of Ni(II) complex. The anticancer activity of the ligand and complex was probed via in vitro cytotoxicity against human breast (MCF7) and lung (A549) cancer cell lines by MTT assay. Further, cytological changes observed in acridine orange/ethidium bromide and DAPI staining methods validated the cytotoxic potential of the complex.

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Structure of aquachloro[tris(2-aminoethyl)amine]nickel(II) chloride monohydrate

Cited by 15 publications

References 2 publications

Nickel complexes with tris(2-aminoethyl)amine (tren): [Ni3(tren)4(H2O)2][Cr(ox)3]2·6H2O (ox = oxalate), {[Ni2(tren)3][ClO4]4·H2O}n, and [Ni2(tren)2(aepd)][ClO4]4·2H2O (aepd = N-(2-aminoethyl)pyrrolidine-3,4-diamine). Synthesis, structure and magnetism †

Nickel complexes with tris(2-aminoethyl)amine (tren): [Ni3(tren)4(H2O)2][Cr(ox)3]2·6H2O (ox = oxalate), {[Ni2(tren)3][ClO4]4·H2O}n, and [Ni2(tren)2(aepd)][ClO4]4·2H2O (aepd = N-(2-aminoethyl)pyrrolidine-3,4-diamine). Synthesis, structure and magnetism †

cis-Octahedral Nickel(II) Complexes with Symmetric and Unsymmetric Tripodal Tetraamine Ligands

A pseudo trinuclear nickel–sodium complex containing tris(8‐methyl‐2‐oxo‐quinolidineamino ethylamine): Synthesis, spectral characterization, X‐ray crystallography and in vitro biological evaluations

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