In the centrosymmetric tetra-nuclear title compound, [Cu(4)I(4)(C(10)H(8)N(2)S(2))(2)], there are two different Cu(I) atoms with tetra-hedral coordination geometries. One is chelated by a pyridine N atom and an S-donor from one di-2-pyridyl disulfide ligand and coordinated by two I atoms, while the second Cu(I) atom is coordinated by a pyridine-N and three I atoms. Iodine bridges between the Cu...

In the monomeric dinuclear title complex, [CuSm(C(20)H(22)N(2)O(4))(NO(3))(3)], the four-coordinate Cu(II) ion has a square-planar geometry involving two O atoms and two N atoms of the deprotonated Schiff base ligand. The Sm(III) ion is ten-coordinate, chelated by four O donor atoms of the Schiff base and two O atoms each from three bidentate nitrate groups, one of which is disordered over two ...

In the title complex, [Zn(NO(3))(2)(C(17)H(14)N(2)O(2))(H(2)O)], the six-coordinated Zn atom is in a distorted octa-hedral geometry, the donor centers being two O atoms and one N atom from the tridentate organic ligand, a water O atom and two O atoms from two monodentate nitrate ions. In the crystal, O-H⋯O hydrogen bonds between the coordinated water mol-ecules and nitrate O atoms and N-H⋯O hyd...

In the title complex, [Pb(C(8)H(9)N(2)O(4))(2)(H(2)O)(2)](n), the eight-coordinate Pb(II) atom lies on a twofold rotation axis and adopts a slightly distorted square-anti-prismatic N(2)O(6) coordination geometry. The ligand donor atoms are the tertiary N atoms of the imidazole rings and the carboxyl-ate O atoms of two chelating 5-carb-oxy-2-propyl-1H-imidazole-4-carboxyl-ate ligands, the carb-o...

To further investigate the α-effect in silanes bearing a geminal donor atom, the model compounds (C2F5)3SiCH2NMe2, (C2F5)3SiCH2OMe and (C2F5)3SiONMe2 were prepared by introduction of pentafluoroethyl groups via nucleophilic substitution of the corresponding chloro-derivatives with pentafluoroethyl lithium. The substances were characterised by NMR spectroscopy and X-ray diffraction via in situ c...

Chiral ferrocene derivatives belong to privileged ligand classes for asymmetric transition metal catalysed reactions. Hetero-bidentate phosphane ligands are hybrid ligands, which combine the properties of phosphorus with those of other donor atoms. This feature creates further asymmetry around the metal centre, which may be helpful for increasing the stereoinduction. Therefore, hetero-bidentate...

Controlling the interactions between ultracold atoms is crucial for quantum simulation and computation purposes. Highly excited Rydberg atoms are considered in this prospect for their strong and controllable interactions known in the dipole-dipole case to induce non-radiative energy transfers between atom pairs, similarly to fluorescence resonance energy transfer (FRET) in biological systems. H...

In the centrosymmetric dinuclear title complex, [Cu2(C24H18N4O6)(C5H5N)2], the Cu(II) ions is tetra-coordinated by two O-atoms and one N-donor of the bridging terephthalo-hydra-zonate ligand and by one pyridine N atom, resulting in a nearly square-planar N2O2 coordination geometry with the Cu(II) ion 0.044 (2) Å out of the mean plane (r.m.s. deviation of 0.0675 Å) of the coordinating atoms.

In the title complex, [Ni(C(11)H(9)ClN(3)O(2))(2)]·4H(2)O, the Ni atom is coordinated by four N atoms and two O atoms derived from two tridentate 3-chloro-6-(3,5-dimethyl-1H-pyrazol-1-yl)picolinate ligands. The cis-N(4)O(2) donor set defines a distorted octa-hedral geometry. In the crystal structure, the complex and water mol-ecules are linked by O-H⋯O hydrogen bonds.