Rhenium(I)tricarbonyl M 2 Cl 2 L-type metallocycles from flexible ditopic benzimidazolyl donors

Neutral binuclear metallocycles of the formula, fac-[{(CO)3Re(mu-Cl)2Re(CO)3}Ln] were obtained using [Re(CO)5Cl] and ditopic flexible nitrogen donor (Ln = L 1 = bis((benzimidazol-1-yl)methyl)benzene; L 2 = bis((5,6-dimethylbenzimidazol-1-yl)methyl)benzene, L 3 = bis((naphthanoimidazol-1-yl)methyl) benzene) in toluene under solvothermal approach. The metallocycles were characterized by ATR-IR, 1 H NMR and ESI- Mass analysis. The crystal structures of 1-3 were confirmed by single crystal X-ray diffrac- tion analysis. Non-traditional intermolecular hydrogen bonding interactions (C-H center dot center dot center dot O equivalent to C) stabilize the solid state structures of the metallocycles.(c) 2023 Elsevier B.V. All rights reserved.

Automated summary

Neutral binuclear metallocycles were synthesized and characterized in this study using a solvothermal approach in toluene solvent. The crystal structures of the compounds were determined by X-ray diffraction analysis, and the results showed that non-traditional intermolecular hydrogen bonding interactions stabilized their solid state structures.