Review: Solution equilibria of ternary complexes formed from copper(II), aliphatic amines, and bioligands

Structural, thermal, electronic, vibrational, magnetic, and cytotoxic properties of chloro(glycinato-N,O)(1,10-phenanthroline-N,N')‑copper(II) trihydrate coordination complex

Chloro(glycinato-N,O)(1,10-phenanthroline-N,N')‑copper(II) trihydrate complex was synthesized through the slow evaporation method. The crystal's structural, thermal, magnetic, and vibrational properties were obtained by X-ray powder diffraction (XRPD), thermal analyses, magnetization, Raman, and Fourier-transform infrared (FT-IR) spectroscopy. XRPD results showed that the crystalline complex belongs to a monoclinic system (P2₁/n). Thermal analyses revealed that around 333 K, the material undergoes a thermodynamically irreversible process. Magnetic data showed a paramagnetic behavior with weak ferromagnetic interactions. Moreover, all the Raman- and infrared-active bands were assigned from computational calculations based on the density functional theory (DFT) to analyze intra-molecular vibrational modes. In addition, the cytotoxic assay on colorectal cancer cells was performed to evaluate the antitumor activity of this ternary compound. Therefore, the antineoplastic activity of [Cu(1,10-phenanthroline)(glycine)Cl]•3H₂O complex in HCT-116 cells was confirmed, showing a potent cytotoxic effect.

Penta and hexanuclear nickel tiara-like clusters with two different thiolate bridges

The infrequent pentanuclear tiara and hexanuclear tiaras with two different types of mono and bidentate thiolates were obtained. These heretofore unknown additions to the cyclo-[Ni(μ-SR)₂]_n tiara family are of particular interest, which are often constructed by just one kind of thiolate ligand.