A novel paradigm for metal-induced ring flipping in the copper(II) complex of 1,2-bis( N -methylbenzimidazol-2 ′ -yl)benzene triflate

Gilbert, Jayakumar G.; Addison, Anthony W.; Prabakaran, Ponraj; Butcher, Raymond J.; Bocelli, Gabriele

doi:10.1016/j.inoche.2004.03.019

Cited by 17 publications

(7 citation statements)

References 20 publications

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“…The N1AC1 (1.308 Å) length is shorter than the N2AC1 length (1.353 Å), which indicates that the N1AC1 bond is close to the double bond and N2AC1 bond is close to the single bond. These Table 1 Crystal data and structure refinement for compound T. distances are comparable with those found for a lot of benzimidazole derivatives [39,40].…”

Section: Crystal Structure and Geometry Optimizationsupporting

confidence: 72%

Structure, spectroscopy, and theory calculations on 1,3-bis((5,6-dimethyl-1H-benzo[d]imidazol-1-yl)methyl)benzene

Geng

et al. 2013

Journal of Molecular Structure

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Section: Crystal Structure and Geometry Optimizationsupporting

confidence: 72%

Structure, spectroscopy, and theory calculations on 1,3-bis((5,6-dimethyl-1H-benzo[d]imidazol-1-yl)methyl)benzene

Geng

et al. 2013

Journal of Molecular Structure

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“…The trans angles are all 180°for symmetry requirement and the cis ones are 92.67(2)°and 87.33(2)°for 1, 90.37(2)°and 89.63(2)°for 2, respectively. The Cu-N distances in 2 are 1.963(4) and 1.974(4) Å , which are longer than the bond lengths in 1 (1.865(4) and 1.877(4) Å ) and close to those of the structurally analogous complex [Cu(bmbz) 2 ](CF 3 SO 3 ) 2 (bmbz = 1,2-bis(Nmethylbenzimidazol-2 0 -yl)benzene, Cu-N = 1.961(3) and 1.981(3) Å ) [28]. Each OBimB ligand affords two coordination sites and chelates a copper ion to form a seven-member ring, resulting in the construction of a ML 2 complex.…”

Section: Description Of the Crystal Structuressupporting

confidence: 50%

Three Transition Metal Complexes Based on a Rigid Ligand Containing Bis(2-Benzimidazolyl) Groups: Syntheses and Crystal Structures

et al. 2012

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Three new complexes ([Cu(OBimB) based on a rigid bis(benzimidazoles) ligand OBimB (OBimB = 1,2-bis(2-benzimidazolyl)benzene) have been synthesized and structurally characterized by X-ray single crystal diffractometry. In the structures of the three complexes each metal ion is coordinated by four N atoms from two twisted V-shaped conformational OBimB ligands in a square-planar geometry. The complex units are further linked into a 2D layer supramolecular network by hydrogen bonds and pÁÁÁp stacking interactions. The electronic absorption spectra of 1, 2, 3 have also been investigated and show that the two transitions around 220 and 280 nm are mainly assigned to intramolecular charge transfer transitions of the ligand (IL).

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“…The imine (C12 = N2/C18 = N4) bond distances in the benzimidazole units are 1.316(2) Å, and this distance is comparable to those observed in the benzimidazole compounds. [ 45–47 ] In order to visualize intermolecular contacts of the polar and non‐polar pentyl arms of the ligand molecules within the structure, hirshfeld surface was drawn, and the contribution of each particular contact was calculated (Figures S11 and S12). The high degree of hydrophobic interactions (H····H and C····H) was observed from the 2D fingerprint plot of the ligand, which indicated high intensities for d i and d e values ranging from 1.2 to 2 Å.…”

Section: Resultsmentioning

confidence: 99%

Tridentate benzimidazole ligand and its metal complexes: Synthesis, characterization, photo physical and sensor properties

Kırpık

Köse

Ballı

2020

Applied Organom Chemis

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A tridentate bisbenzimidazole‐pyridine ligand (L‐C5) with two pentyl side‐units and its metal complexes with Mn2+, Fe2+, Co2+, Ni2+, Cu2+ and Zn2+ metal ions were synthesized and characterized. The structures of the ligand (L‐C5) and its five coordinate [Mn(L‐C5)Cl2] were elucidated by single crystal X‐ray diffraction studies. The absorption and photoluminescence properties of the compounds were studied in solution media. The ligand is highly fluorescent, and binding of the metal ions to the ligand has caused significant changes in the emission band (shift or quenching). Moreover, the effect of aggregation on UV–Vis. absorption and emission properties was examined in MeOH‐water mixtures. The ligand was found to show aggregation‐induced quenching in the MeOH‐water mixture. The ligand was also screened for its colorimetric and fluorometric sensing ability of several metal ions [Na+, K+, Mg2+, Al3+, Ca2+, Mn2+, Fe2+, Fe3+, Co2+, Ni2+, Cu2+, Zn2+, Hg2+, Pb2+]. The ligand showed selective sensing ability towards Zn2+, and the limit of detection was calculated as 3.09 × 10−7 m. The ligand also showed a distinguishable color change in the presence of Fe2+ under daylight.

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A novel paradigm for metal-induced ring flipping in the copper(II) complex of 1,2-bis( N -methylbenzimidazol-2 ′ -yl)benzene triflate

Cited by 17 publications

References 20 publications

Structure, spectroscopy, and theory calculations on 1,3-bis((5,6-dimethyl-1H-benzo[d]imidazol-1-yl)methyl)benzene

Structure, spectroscopy, and theory calculations on 1,3-bis((5,6-dimethyl-1H-benzo[d]imidazol-1-yl)methyl)benzene

Three Transition Metal Complexes Based on a Rigid Ligand Containing Bis(2-Benzimidazolyl) Groups: Syntheses and Crystal Structures

Tridentate benzimidazole ligand and its metal complexes: Synthesis, characterization, photo physical and sensor properties

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