The title compound, [(Z)-4-allyl-2-(2-hydroxybenzylidene)thiosemicarbazide-κS][(E)-4-allyl-1-(2-oxidobenzylidene)thiosemicarbazidato-κ(3)O,N(1),S]copper(II) monohydrate, [Cu(C(11)H(11)N(3)OS)(C(11)H(13)N(3)OS)]·H(2)O, crystallized as a rotational twin in the monoclinic crystal system (space group Cc) with two formula unit (Z' = 2) in the asymmetric unit, one of which contains an allyl substituent disordered over two positions. The Cu(II) atom exhibits a distorted square-planar geometry involving two differently coordinated thiosemicarbazone ligands. One ligand is bonded to the Cu(II) atom in a tridentate manner via the phenolate O, azomethine N and thioamide S atoms, while the other coordinates in a monodentate manner via the S atom only.
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November 2010
In the title compound, [Cu(C(5)H(14)NO(6)P(2))(2)(H(2)O)(2)], the Cu(II) atom occupies a special position on an inversion centre. It exhibits a distorted octa-hedral coordination environment consisting of two O,O'-bidentate (1-ammonio-pentane-1,1-di-yl)diphospho-nate anions in the equatorial plane and two trans water mol-ecules located in axial positions. The ligand mol-ecules are coordinated to the Cu(II) atom in their zwitterionic form via two O atoms from different phospho-nate groups, creating two six-membered chelate rings with a screw-boat conformation.
View Article and Find Full Text PDFThe crystal structure of potassium magnesium niobium oxide phosphate, KMg(1/3)Nb(2/3)OPO(4), which was described in the space group P4(3)22 [McCarron & Calabrese, (1993 ▶). J. Solid State Chem.
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January 2010
In the title compound, [Pd(C(5)H(14)N(2)O(3)P)Cl]·H(2)O, the Pd(II) atom shows a slightly distorted square-planar geometry and forms two five-membered metallacycles, which both exhibit half-chair conformations. The crystal structure consists of layers propogating in the [100] direction which are connected into a three-dimensional network by strong N-H⋯Cl, N-H⋯O and O-H⋯O hydrogen bonds.
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January 2010
The title compound, (H(3)O)[Pd(C(2)H(7)NO(6)P(2))(C(2)H(8)NO(6)P(2))]·3H(2)O, was synthesized by the reaction of [Pd(H(2)O)(4)](NO(3))(2) with 1-amino-ethane-1,1-diyldiphospho-nic acid in aqueous solution. The asymmetric unit contains one mol-ecule of the complex existing as an anion, an oxonium counter-ion and three solvent water mol-ecules. The Pd(II) ion occupies a position on a pseudo-twofold axis, which is not realized crystallographically.
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May 2010
In the structure of the title compound, [Cu(C(14)H(11)N(3)OS)(C(5)H(5)N)], the Cu(II) atom exhibits a slightly distorted square-planar CuN(2)OS coordination polyhedron consisting of a phenyl O, an azomethine N and a thio-amide S atom from the tridentate thio-semicarbazonate dianion, and the N atom of a pyridine mol-ecule. The thio-semicarbazonate ligand exists in the thiol tautomeric form as an E isomer. Rotational disorder of the pyridine and phenyl rings in a 1:1 ratio of the respective components is observed.
View Article and Find Full Text PDFIn the title compound, C(2)H(5)N(3)O(3), the hydroxamic group adopts an anti orientation with respect to the hydrazide group. In the crystal, mol-ecules are connected by N-H⋯O and O-H⋯N hydrogen bonds into zigzag chains along the c axis.
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April 2010
The title compound, [Ni(C(2)H(8)NO(6)P(2))(2)(H(2)O)(2)]·9H(2)O, exhibits a slightly distorted octa-hedral coordination environment around the Ni(II) atom. It contains two mol-ecules of 1-amino--ethyl-idenediphospho-nic acid in the zwitterionic form, coord-inated via O atoms from two phospho-nate groups and creating two six-membered chelate rings. Two water mol-ecules in cis positions complete the coordination environment of the Ni(II) atom.
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April 2010
In the title compound, [Co(C(2)H(8)NO(6)P(2))(2)(H(2)O)(2)]·9H(2)O, the Co(II) atom has a slightly distorted octa-hedral coordination environment consisting of four deprotonated phospho-nate O atoms of two independent 1-amino-ethyl-idendiphospho-nate anions and complemented by the O atoms of two water mol-ecules in cis positions. The anions exists in the zwitterionic form (protonated amino group and two deprotonated phospho-nate O atoms) and constitute two six-membered chelate rings. The crystal structure also contains nine partly disordered uncoordinated water mol-ecules, which create an extensive three-dimensional network of strong O-H⋯O and N-H⋯O hydrogen bonds.
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December 2010
The title compound, [Pd(C(6)H(4)N(2)S(2))(C(18)H(15)P)(2)], was obtained as a minor product from the reaction of trans-PdCl(2)(PPh(3))(2) with piperazine-1,4-dicarbothioic acid bis-(pyridin-2-yl)amide. The Pd(II) atom displays a slightly distorted square-planar PdP(2)S(2) geometry with a bidentately coordinated pyridin-2-ylcarbonimidodithio-ate ligand and two triphenyl-phosphine mol-ecules, coordinated in cis positions. The crystal structure features weak π-π [centroid-centroid distance =3.
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December 2010
In the title compound, [Cu(C(16)H(11)N(3)O(2)S(2))(C(5)H(5)N)](n), the Cu(II) atom displays a square-pyramidal CuN(2)O(3) coordination geometry with strong elongation in the vertex direction. The hydrazone mol-ecule is coordinated to the Cu(II) atom in a tridentate manner in the enolic form, creating five- and six-membered chelate metallarings. The pyridine mol-ecule completes the square-planar base of the copper coordination environment.
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