The title complex, [CuCl(2)(C(21)H(22)N(4)O)], contains a bis-(benzimidazole) unit with a chiral bridgehead C atom that forms part of a tetra-hydro-pyrrole ring fused to one of the benzimidazoles. The chelate angle is 90.45 (9)° and the dihedral angle between the essentially planar benzimidazole fragments is 26.68 (9)°. The Cu(II) coordination geometry lies approximately midway between tetra-he...

In the binuclear centrosymmetric crystal structure of the title compound, [Cu(2)(C(7)H(14)N(5))(2)(C(9)H(21)P)(2)], all atoms except those of the isopropyl groups are approximately co-planar. The Cu(II) atom is in a distorted trigonal-planar CuN(2)P coordination. Bond angles around the amino N atom suggest sp(2) hybridization. Several intra-molecular C-H⋯N inter-actions are present involving te...

In the title complex, [Mn(C(22)H(18)N(2)O(2))Cl], the Mn(III) center is in a distorted square-pyramidal configuration; the basal plane is formed by the N(2)O(2) donors of the tetra-dentate Schiff base dianion, with the two phenol O atoms and two imine N atoms each mutually cis. The chloride ion occupies the apical coordination site. The dihedral angle between the two outer phenolate rings of th...

In the asymmetric unit of title coordination polymer, {(C(16)H(36)N)[Zn(3)(C(9)H(3)O(6))(2)(OH)]·0.25H(2)O}(n), there are three independent Zn(2+) cations, two benzene-1,3,5-tricarboxyl-ate ligands and a μ(3)-bridging hydroxide group, together with a tetra-n-butyl-ammonium counter-cation and a partially occupied water molecule of solvation (occupancy 0.25). Each Zn ion is coordinated by three c...

Crystals of manganese(II) dibarium bis-(hydrogenphosphate) bis-(dihydrogenphosphate), MnBa(2)(HPO(4))(2)(H(2)PO(4))(2), were obtained by hydro-thermal synthesis. The title compound is isotypic with its Cd(II) and Ca(II) analogues. The structure is built up of an infinite {[Mn(HPO(4))(2)(H(2)PO(4))(2)](4-)}(n) chain running along [100], which consists of alternate MnO(6) octa-hedra and [PO(4)] t...

In the title mol-ecule, C17H12O5, the chromen-2-one ring and the 4-meth-oxy-benzoate side chain are inclined to one another at a dihedral angle of 69.82 (9)°. The crystal structure features parallel sheets of centrosymmetric R2(2)(6) dimers joined by a C(7) chain, resulting in centrosymetric tetra-mers of hydrogen-bonded mol-ecules with graph-set motif R4(4)(40). These centrosymetric tetra-mers...

The asymmetric unit of the title tetra-nuclear niobium(V) compound, [Nb(4)(C(2)H(5)O)(8)(C(5)H(7)O(2))(4)O(4)], contains two Nb(V) atoms, two bridging O atoms, two acetyl-acetonate and four ethano-late ligands. Each Nb(V) atom is six-coordinated by the bridging O atoms, two ethano-late and one chelating acetyl-acetonate ligands. The Nb-O distances vary between 1.817 (2) and 2.201 (2) Å and the ...

In the title compound, C(14)H(10)N(6), the pyridine and tetra-zole rings are nearly coplanar and are twisted from each other by a dihedral angle of only 0.86 (9)°. The benzene ring makes a dihedral angle of 70.55 (6)° with the tetra-zole ring.

The title compound, [Pr(H(2)O)(9)]I(3)·2CS(NH(2))(2), an adduct of nona-aqua-praseodymium triiodide with two thio-urea mol-ecules, is composed from [Pr(H(2)O)(9)](3+) cations (polyhedron: monocapped tetra-gonal anti-prism), noncoordinated thio-urea mol-ecules and iodide anions. The components are evidently connected by hydrogen bonds but in the presence of heavy atoms water H atoms have not bee...

In the title compound, [Sn(4)(CH(3))(8)(C(8)H(9)O(2))(2)Cl(2)O(2)], the tetra-nuclear complex mol-ecule has crystallographically imposed inversion symmetry. The coordination polyhedron about the two central Sn atoms is distorted trigonal-bipyramidal, whilst the two peripheral metal atoms bonded to the carboxyl-ate groups have a distorted octa-hedral coordination geometry. In the crystal, mol-ec...