Indium(III) complexes containing bithiazole derivatives, chloride, methanol, and dimethyl sulfoxide: X‐ray studies, spectroscopic characterization, and thermal analyses

Recent advances in synthesis of organometallic complexes of indium

The indium complexes are being used in many applications like catalysis, optoelectronics, sensors, solar cells, biochemistry, medicine, infrared (IR) mirrors and thin-film transistors (TFTs). In organometallic complexes of indium, it forms different types of complexes with single, double, triple and tetra linkages by coordinating with numerous elements like C, N, O and S and also with some other elements like Se and Ru. So, the present study comprises all the possible ways to synthesize the indium complexes by reacting with different organic ligands; most of them are N-heterocyclic carbenes, amines, amides and phenols. The commonly used solvents for these syntheses are tetrahydrofuran, dichloromethane, toluene, benzene, dimethyl sulfoxide (DMSO) and water. According to the nature of the ligands, indium complexes were reported at different temperatures and stirring time. Because of their unique characteristics, the organometallic chemistry of group 13 metal indium complexes remains a subject of continuing interest in synthetic chemistry as well as material science.

Cu(i)-Catalyzed oxidative homo-coupling of thiazoline-4-carboxylates: synthesis of 4,4′-bithiazoline derivatives

Cu(i)-Catalyzed oxidative homo-coupling of thiazoline-4-carboxylates with good functional group tolerance has been developed.

Trichloridothallium(III) Complexes with Bipyridine Derivatives: From Structure to Luminescence Properties

Several new thallium(iii) complexes, [Tl(4,4′-dmbpy)Cl3(DMSO)]·H2O (1), [Tl(4,4′-dtbpy)Cl3(DMSO)] (2), [Tl(5,5′-dmbpy)Cl3(DMSO)]·(5,5′-dmbpy) (3), and [Tl(6-mbpy)Cl3(DMSO)] (4) (4,4′-dmbpy = 4,4′-dimethyl-2,2′-bipyridine, 4,4′-dtbpy = 4,4′-ditert-butyl-2,2′-bipyridine, 5,5′-dmbpy = 5,5′-dimethyl-2,2′-bipyridine, and 6-mbpy = 6-methyl-2,2′-bipyridine) were prepared from the reaction of TlCl3 with the mentioned ligands in DMSO. The four complexes were fully characterised and their structures were determined by X-ray diffraction. These complexes have a bidendate nitrogenous ligand, a DMSO molecule, and three chloride anions (in the facial position) attached to a TlIII metal centre in a distorted octahedral environment. The stability of the complexes in DMSO is evident by a 203,205Tl–1H spin–spin coupling, determined by 1H NMR spectroscopy. Interestingly, six bond hydrogen–thallium coupling was observed with a coupling constant of 6JTlH = 20 Hz. The absorption and emission spectra of the complexes were investigated. These studies revealed that upon coordination to TlIII, the luminescent intensity is increased in comparison with the related unbound ligands.

Trichlorido(dimethyl sulfoxide-κO)(di-2-pyridyl-amine-κ(2)N,N')indium(III)

In the title compound, [InCl(3)(C(10)H(9)N(3))(C(2)H(6)OS)], the In(III) atom is six-coordinated in a distorted octa-hedral geometry by two N atoms from a chelating di-2-pyridyl-amine ligand, one O atom from a dimethyl sulfoxide ligand and three Cl atoms. Inter-molecular C-H⋯Cl hydrogen bonds and π-π contacts between the pyridine rings [centroid-centroid distance = 3.510 (3) Å] are present in the crystal.

Trichlorido(4,4'-dimethyl-2,2'-bipyridine-κ(2)N,N')(methanol-κO)indium(III) methanol monosolvate

In the title compound, [InCl₃(C₁₂H₁₂N₂)(CH₃OH)]·CH₃OH, the In^III atom is six-coordinated in a distorted octa­hedral geometry by two N atoms from a chelating 4,4′-dimethyl-2,2′-bipyridine ligand, one O atom from a methanol mol­ecule and three Cl atoms. In the crystal, inter­molecular O—H⋯O and O—H⋯Cl hydrogen bonds link the complex and solvent methanol mol­ecules. Intra­molecular C—H⋯Cl hydrogen bonds are also present in the complex.