An Inorganic Helix [Mn(IPG)(MeOH)]n[PF6]n[‡]: Structural and Magnetic Properties of asyn-anti Carboxylate-Bridged Manganese(II) Chain Involving a Tetradentate Ligand

Policar, Clotilde; Lambert, François; Césario, Michèle; Morgenstern‐Badarau, Irène

doi:10.1002/(sici)1099-0682(199912)1999:12<2201::aid-ejic2201>3.0.co;2-k

Cited by 128 publications

(103 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Its geometry differs from that of compound 1, an Mn II compound prepared with the closely related ligand N-[(1-methylimidazol-2-yl)methyl]-N-(2-pyridylmethyl)-glycinate, IPG, which was previously shown to crystallize as a helical polymer. [51] Both these bridged structures are disrupted in DMSO, leading to monomeric species. In solution, compounds 1 and 2 have been shown to react with superoxide, both in anhydrous media and in aqueous buffer.…”

Section: Resultsmentioning

confidence: 94%

“…It was shown to crystallize from MeOH with an infinite helical polymeric structure. [51] We describe herein the crystal structure of compound 2, obtained from the closely related ligand N,N-bis[ (1-methylimidazol-2-yl)methyl]glycinate [BIG; acronym for bis(imidazolyl)glycinate] and manganese(II). It crystallizes from water as a dinuclear bis(µ-carboxylato)-Mn II Mn II complex.…”

Section: Superoxide (Omentioning

confidence: 99%

“…When this step is performed by reductive amination, improved yields over other synthetic methods are achieved, as previously reported in the case of N-[(1-methylimidazol-2-yl)methyl]-N-(2-pyridylmethyl)glycinate (IPG). [51] We report here a highyielding, one-step synthesis of the ligand N,N-bis[(1-methylimidazol-2-yl)methyl]glycinate (BIG). A three-step synthesis of BIG has been published previously, which involved the preparation of N,N-bis[ (1-methylimidazol-2-yl)methyl]amine from N-methyl-2-carboxyimidazole and further N-alkylation by treatment of the secondary amine with ethyl bromoacetate.…”

Section: Synthesis Of the Ligandsmentioning

confidence: 99%

“…With IPG, as previously described, crystals suitable for X-ray analysis were slowly grown from anhydrous methanolic solution (compound 1), providing a polymeric inorganic helix. [51] …”

Section: Preparation Of the Complexesmentioning

confidence: 99%

“…The MϪN tripodal distance is of the same order as has previously been found for similar compounds consisting of tripodal amines and Mn II . [38,51,53,54] This distance is shorter than the sum of the van der Waals radii (2.82 Å ), indicating that the manganese ion is linked to the N tripodal atom. The bis[Mn(µ-OCO)] core is characterized by MnϪOϪMn angles of 108.4(2)°and 106.4(4)°and an MnϪMn distance of 3.672(2) Å .…”

Section: Solid-state Characterization Of Complex 2 ؊ Comparison With mentioning

confidence: 99%

See 4 more Smart Citations

New MnII Complexes with an N/O Coordination Sphere from TripodalN-Centered Ligands − Characterization from Solid State to Solution and Reaction with Superoxide in Non-Aqueous and Aqueous Media

Policar

Durot

Lambert

et al. 2001

Eur. J. Inorg. Chem.

Self Cite

View full text Add to dashboard Cite

The crystal structure of a dimeric bis(µ-carboxylato)Mn II Mn II complex (2) with a tetradentate N-centered tripodal ligand, N,N-bis [(1-methylimidazol-2-yl)methyl]glycinate, is presented. The carboxylates are bridging monodentate. This complex shows some striking differences to the previously published parent compound 1 obtained with the closely related ligand N- [(1-methylimidazol-2-yl)methyl]-N-(2-pyridylmethyl)glycinate. The carboxylato bridges in both structures are shown to be disrupted in solution. The reactivities in solution of compounds 1 and 2 toward superoxide were

show abstract

Section: Resultsmentioning

confidence: 94%

Section: Superoxide (Omentioning

confidence: 99%

Section: Synthesis Of the Ligandsmentioning

confidence: 99%

“…With IPG, as previously described, crystals suitable for X-ray analysis were slowly grown from anhydrous methanolic solution (compound 1), providing a polymeric inorganic helix. [51] …”

Section: Preparation Of the Complexesmentioning

confidence: 99%

Section: Solid-state Characterization Of Complex 2 ؊ Comparison With mentioning

confidence: 99%

See 3 more Smart Citations

New MnII Complexes with an N/O Coordination Sphere from TripodalN-Centered Ligands − Characterization from Solid State to Solution and Reaction with Superoxide in Non-Aqueous and Aqueous Media

Policar

Durot

Lambert

et al. 2001

Eur. J. Inorg. Chem.

Self Cite

View full text Add to dashboard Cite

show abstract

Polynuclear MnII Complexes with Chloroacetate Bridge − Syntheses, Structure, and Magnetic Properties

Fernández

Corbella

Mahı́a

et al. 2002

Eur. J. Inorg. Chem.

View full text Add to dashboard Cite

Three new polynuclear Mn II complexes with chloroacetate bridges were obtained and characterized by X-ray diffraction: [Mn 3 (µ-ClCH 2 COO) 6 (bpy) 2 ] (1), [Mn 2 (µ-ClCH 2 COO) 2 -(phen) 4 ](ClO 4 ) 2 (2), and [Mn(µ-ClCH 2 COO) 2 (phen)] n (3). The Mn···Mn distance for 1 (3.624 Å ) is smaller than for 2 (4.613 Å ) and 3 (4.530 Å ); this is in agreement with the number of carboxylate bridges. The three compounds show a weak antiferromagnetic coupling. The J values are −3.82 cm −1 for

show abstract

Evaluating the biological potential of some new cobalt (II) complexes with acrylate and benzimidazole derivatives

Vlaicu

Olar

Maxim

et al. 2019

Applied Organom Chemis

View full text Add to dashboard Cite

This paper presents the synthesis, physico‐chemical and biological properties of four new coordination compounds with mixed ligands: acrylate ion (acr) and benzimidazole/benzimidazole derivatives with the general formula [Co(L)2(acr)2]·nH2O [(1) L: benzimidazole (HBzIm), n: 0.5; (2) L: 2‐methylbenzimidazole (2‐MeBzIm), n: 0.5; (3) L: 5‐methylbenzimidazole (5‐MeBzIm), n: 0; (4) L: 5,6‐dimethylbenzimidazole (5,6‐Me2BzIm), n: 0]. Their chemical formulae were achieved correlating the chemical analysis with mass spectrometry data, the ligands coordination modes were assigned by Fourier transform‐infrared measurements, and the trigonal bipyramidal geometry of cobalt ion in complexes was assigned by data correlation of UV–Vis‐NIR spectra and magnetic moments measurements. Single‐crystal X‐ray diffraction reveals a mononuclear structure with a pentacoordinated cobalt (II) ion, connected to two acrylato coordinated in different modes and two unidentate 5,6‐dimethylbenzimidazole ligands for compound (4). The biological tests were performed against several microbial strains, the cytotoxicity was evaluated on HCT8 cellular lines and the cell cycle analysis was performed on HT29 cellular lines. Microbiological assays indicated that Co (II) complexes present a very good to good activity against Candida albicans 1760, Enterococcus faecium E5, Bacillus subtilis ATCC 6683 and Escherichia coli ATCC 25922. Predictive pharmacokinetic (ADME), toxicity and drug‐likeness profiles were evaluated for Co (II) complexes. Our results highlight that Co (II) complexes depicted in the present study are suitable to be used as efficient pharmacological agents.

show abstract

An Inorganic Helix [Mn(IPG)(MeOH)]n[PF6]n[‡]: Structural and Magnetic Properties of asyn-anti Carboxylate-Bridged Manganese(II) Chain Involving a Tetradentate Ligand

Cited by 128 publications

References 30 publications

New MnII Complexes with an N/O Coordination Sphere from TripodalN-Centered Ligands − Characterization from Solid State to Solution and Reaction with Superoxide in Non-Aqueous and Aqueous Media

New MnII Complexes with an N/O Coordination Sphere from TripodalN-Centered Ligands − Characterization from Solid State to Solution and Reaction with Superoxide in Non-Aqueous and Aqueous Media

Polynuclear MnII Complexes with Chloroacetate Bridge − Syntheses, Structure, and Magnetic Properties

Evaluating the biological potential of some new cobalt (II) complexes with acrylate and benzimidazole derivatives

Contact Info

Product

Resources

About