Thermodynamic parameters of complex formation between d(10) metal ions, such as Zn(2+), Cd(2+), Hg(2+) and Ag(+), and the macrocyclic thioether 1,4,7-trithiacyclononane ([9]AneS3) or the monodentate diethylsulfide (Et(2)S), in acetonitrile (AN) at 298.15 K, were studied by a systematic methodology including potentiometry, calorimetry and polarography. [9]AneS3 is able to form complexes with all...

In the title compound, [Cu(NO(3))(2)(C(8)H(9)N(3))(2)], the Cu(II) atom, lying on an inversion center, has a distorted octa-hedral coordination environment defined by four N atoms from two chelating 2-amino-methyl-1H-benzimidazole ligands and two O atoms from two monodentate nitrate anions. In the crystal, N-H⋯O hydrogen bonds link the complex mol-ecules into a three-dimensional network. An int...

In the title compound, [Cu(C(2)HCl(2)O(2))(C(10)H(8)N(2))(2)](C(2)HCl(2)O(2))·2H(2)O, the Cu(II) ion is bonded to two N,N'-bidentate 2,2'-bipyridyl ligands and one O-monodentate 2,2-dichloro-acetate anion in a distorted CuON(4) trigonal-bipyramidal geometry, with the O atom occupying an equatorial site. In the crystal, the components are linked by O-H⋯O and O-H⋯Cl hydrogen bonds.

In the title mononuclear complex, [Mn(C(14)H(10)NO(3))(2)(CH(3)OH)(4)], the Mn(II) atom, lying on an inversion centre, exhibits a distorted octa-hedral geometry, defined by two O atoms from two monodentate ligands and four O atoms from four methanol mol-ecules. The crystal structure involves intra-molecular O-H⋯N and O-H⋯O and inter-molecular O-H⋯O hydrogen bonds.

This paper covers nineteen Pt(II) complexes of the composition Pt(η3-X1X2X3)(PR3), (X = N1, N2, N3; S1, S2, S3; or Te1, Te2, Te3). These crystallized in three crystal classes: triclinic (eleven examples), monoclinic (six and orthorhombic (two examples). Each tridentate ligand creates two metallocyclic rings with common Te2 donor ligands types N1C2N2C2N3, N1C2N2NC2N3, S1C2S2C2S3, S1C3S2C3S3, Te1...

In the title compound, [Cu(NO(3))(2)(C(7)H(8)N(2)O)(2)], the Cu(II) atom is located on a centre of inversion, and is coordinated by two bidentate benzohydrazide ligands and two monodentate nitrate anions in an axially distorted octa-hedral geometry within an N(2)O(4) donor set. The crystal structure is stabilized by N-H⋯O and weak N-H⋯N hydrogen bonds.

In the title complex, [Cu(CH(5)N(3)S)(2)(NCS)], the non-H part of the mol-ecule is strictly planar, lying on the mirror plane at y = 0.25. The Cu atom lies at the centre of a triangle formed by the coordination of three monodentate groups, viz. two thio-semicarbazide ligands and one NCS(-) anion. Weak inter-molecular N-H⋯S inter-actions generate a two-dimensional network.

In the title compound, [Ni(N(3))(2)(C(10)H(14)N(3)O(2)S)(2)], the Ni(II) atom lies on an inversion center and adopts a distorted trans-NiO(2)N(4) octa-hedral geometry, coordinated by two N,O-bidentate 4,4,5,5-tetra-methyl-2-(5-methyl-imidazol-4-yl)-2-imidazoline-1-oxyl 3-oxide nitronyl nitroxide radical ligands and two monodentate azide anions.

The complex chemistry of uranyl nitrate with mono and bi-functional neutral extractants shows, that it forms 1:2 and 1:1 complexes respectively. The structures of the isolated complexes show, that the water molecules from the primary coordination sphere of [UO2(NO3)2.2H2O] are replaced by the extractants completely and adopt a hexagonal bi-pyramidal geometry. However, the structural chemistry o...