cis-Dichloro[tris(2-benzimidazolylmethyl)amine]iron(III) chloride ethanol dihydrate: hydrogen bonding changing the arrangement of tapes built from π–π and C—H...π interactions

Abstract

The title compound, [FeCl2(C24H21N7)]Cl.C2H5OH.2H2O, comprises an [FeCl2(C24H21N7)]+ cation, a Cl- anion, an ethanol molecule and two water molecules. The cations are linked by pi-pi and C-H...pi interactions into one-dimensional tapes, and hydrogen bonding between the cations, Cl- anions, and ethanol and water molecules links these tapes into a three-dimensional network.

Potent inhibition of protein tyrosine phosphatases by copper complexes with multi-benzimidazole derivatives

“…All ligands were synthesized by simple procedures from relative acids [tartaric acid, nitrilotriacetic acid, ethylene diamine tetraacetic acid, ethylene glycol bis(2-aminoethyl) tetraacetic acid and diethylene triamine pentaacetic acid] with the appropriate 1,2-diaminobenzene dihydrochloride or 1,2-diaminobenzene and well characterized as our previously described, 1, 2-dis(1H-benzoimidazol-2-yl)ethane-1,2-diol (TDB) (Feng et al 2007(Feng et al , 2009, tris(1H-benzo-imidazol-2-ylmethyl)amine(NTB) (Feng et al 2006;Li et al 2005), N, N, N 0 , N 0 -tetrakis(1H-benzoimidazol-2-ylmethyl)ethane-1, 2-diamine (EDTB) (Qin et al 2004(Qin et al , 2005b, bis(1H-benzo-imidazol-2-ylmethyl)-[2-(2-{2-[bis-(1H-benzoimidazol-2-ylmethyl)-amino]ethoxy} ethoxy)ethyl] amine (EGTB) (Qin et al 2005a, c), and 1,1,4,7,7-pentakis (1H-benz-imidazol-2-ylmethyl)-1,4,7-triazaheptane (DTPB) (Yan et al 2004).…”