Synthesis, Structure, and Properties of a Copper(II) Binuclear Complex Based on Trifluoromethyl Containing Bis(pyrazolyl)hydrazone.

A new complex of copper(II) with methyl-5-(trifluoromethyl)pyrazol-3-yl-ketazine (HL) was synthesized with the composition [CuL]∙CHOH (). Recrystallization of the sample from DMSO yielded a single crystal of the composition [CuL((CH)SO)] (). The coordination compounds were studied by single-crystal X-ray diffraction analysis, IR spectroscopy, and static magnetic susceptibility method.

Synthesis, Structure, and Magnetic and Biological Properties of Copper(II) Complexes with 1,3,4-Thiadiazole Derivatives.

New coordination compounds of copper(II) with 2,5-bis(ethylthio)-1,3,4-thiadiazole (L) and 2,5-bis(pyridylmethylthio)-1,3,4-thiadiazole (L) with compositions Cu(L)Br, Cu(L)(CN), Cu(L)Cl, and Cu(L)Br were prepared. The complexes were identified and studied by CHN analysis, infrared (IR) spectroscopy, powder X-Ray diffraction (XRD), and static magnetic susceptibility. The crystal structures of Cu(II) complexes with L were determined.

Spin Crossover and Thermochromism in Iron(II) Complexes with 2,6-Bis(1-imidazol-2-yl)-4-methoxypyridine.

New iron(II) complexes with 2,6-bis(1-imidazol-2-yl)-4-methoxypyridine () of the composition [FeL]A∙mHO (A = SO, n = 1, m = 2 (); A = ReO, n = 2, m = 1 (); A = Br, n = 2, m = 2 ()) have been synthesized and investigated. To determine the coordination ability of the ligand, a single crystal of a copper(II) complex of the composition [CuLCl] () was obtained and studied by X-ray technique. Compounds - were studied using methods of X-ray phase analysis, electron (diffuse reflection spectra), infrared and Mössbauer spectroscopy, static magnetic susceptibility.

Halogen Bonding Channels for Magnetic Exchange in Cu(II) Complexes with 2,5-Di(methylthio)-1,3,4-thiadiazole.

Copper(II) complexes with 2,5-bis(methylthio)-1,3,4-thiadiazole (tda) formulated as [Cu(tda) X ] (n=2, X=Cl , Br , C N ; n= 1, X=C N ) have been isolated and fully characterized. The crystal structures of all compounds have been determined using single-crystal X-ray diffraction (SCXRD). A study of the magnetic susceptibility in the range 1.

Three differently coloured concomitant polymorphs: synthesis, structure and packing analysis of (4-(3',5'-dimethyl-1H-pyrazol-1'-yl)-6-methyl-2-phenylpyrimidine)dichlorocopper(II).

A novel pyrazolylpyrimidine ligand (L) and its complex CuLCl(2) were prepared and structurally characterized. The simultaneous crystallization of three polymorphs of CuLCl(2), green (G), emerald green (EG) and orange (O), was discovered. The molecular structures vary only slightly between the three forms.