Copper complexes of the "tripod" ligand tris(2-benzimidazolylmethyl)amine: five- and six-coordinate copper(II) derivatives and some copper(I) derivatives

Antibacterial studies, DNA oxidative cleavage, and crystal structures of Cu(II) and Co(II) complexes with two quinolone family members, ciprofloxacin and enoxacin

“…The spectrum of compound 8 shows a CN stretching absorption at 2078 cm À1 and a d (NCS) absorption at 475 cm À1 ; both bands confirm the presence of a thiocyanato N linkage [45]. In the Raman spectra of the enoxacin complexes a new band around 470 cm À1 can be assigned to the vibration (Co-O) [17]; for the compound 5 an absorption band at 254 cm À1 ascribed to the m(CoCl) vibration is found; and for compound 8 an absorption band at 297 cm À1 due to the m(Co-NCS) [46] is observed.…”

Mono‐ versus Binuclear Copper(II) Complexes in Phosphodiester Hydrolysis

“…The geometry around the copper() ion is clearly a quite perfect square pyramid as it can be seen from the geometric parameters and the τ factor which is equal to 0.04. [19] The equatorial positions are occupied by one pyridine N atom (N3) and the nitrogen N1 and oxygen O19 of the ethanolamine moiety. The fourth equatorial ligand is the oxygen atom of a triflate counterion.…”

A Zinc(II) Nitrate Complex with Tripod Ligand Tris(2-benzimidazolylmethyl)amine and 2-Methacrylate

“…This is the preferred nitrogen atom for coordination as found for other metal complexes with benzimidazoles. [25,26] Information regarding the possible bonding modes of the nitrate may also be obtained from the IR spectra. The strong, fairly broad absorption band at 1383 cm −1 indicates that the ionic nitrate groups (D 3h ) are present.…”