ABSTRACT: In the title compound, [Rh(C(5)H(7)O(2))(C(18)H(14)BrP)(CO)], the Rh(I) atom adopts a slightly distorted square-planar geometry involving two O atoms [Rh-O = 2.077?(2) and 2.033?(2)?Å] of the acetyl-acetonate ligand, one carbonyl C atom [Rh-C = 1.813?(2)?Å] and one P atom [Rh-P = 2.242?(5)?Å] of the PPh(2)(2-BrC(6)H(4)) phosphane ligand. Difference electron density maps indicate a disorder of the Br atom over two positions in an approximate 0.95:0.05 ratio. However, this disorder could not be resolved satisfactorily with the present data.
Project description:The title compound, [Rh(C(5)H(7)O(2))(C(18)H(12)Cl(3)P)(CO)], contains the bidentate acetyl-acetonate ligand coordinated to the Rh(I) atom, forming a chelate ring [Rh-O = 2.0327?(15) and 2.0613?(14)?Å]. The Rh(I) atom is additionally coordinated by one P [Rh-P = 2.2281?(6)?Å] and one carbonyl C [Rh-C = 1.812?(2)?Å] atom, resulting in a slightly distorted square-planar geometry. The mol-ecules are packed to minimize steric hindrance with the phosphanes positioned above and below the slightly distorted square geometrical plane.
Project description:The title compound, [Rh(C(5)H(7)O(2))(C(20)H(32)NP)(CO)], features an acetyl-acetonate-chelated Rh(I) cation coordinated by one P [Rh-P = 2.2525?(7)?Å], one carbonyl C [Rh-C = 1.792?(3)?Å] and two O [Rh-O = 2.0582?(17) and 2.0912?(18)?Å] atoms in a slightly distorted square-planar geometry. Mol-ecules are packed in positions of least steric hindrance, with the phosphane ligands positioned above and below the Rh-acetyl-acetonate backbone.
Project description:In the title compound, [Rh(C10H9O2)(CO)2], a distorted square-planar coordination geometry is observed around the Rh(I) atom, formed by the O atoms of the bidentate ligand and two C atoms from the carbonyl ligands. The Rh(I) atom is displaced from the plane through the surrounding atoms by 0.017?Å. In the crystal, C-H?O inter-action is observed between a methyl group of the bidentate ligand and a carbonyl O atom. Metallophilic inter-actions [3.308?(3) and 3.461?(3)?Å] between neighbouring Rh(I) atoms are encountered in the crystal, resulting in the formation of a metal chain along the b-axis direction.
Project description:In the title compound, [Nb(CH(3)O)(3)(C(5)H(7)O(2))Cl], the Nb(V) atom is coordinated by two O atoms from the chelating acetyl-acetonate ligand, three O atoms from the methano-late groups and one chloride ligand. The octa-hedral environment around niobium is slightly distorted with Nb-O distances in the range 1.8603?(15)-2.1083?(15)?Å and an Nb-Cl distance of 2.4693?(9)?Å. The O-Nb-O angles vary between 80.74?(6) and 100.82?(7)°, while the trans Cl-Nb-O angle is 167.60?(5)°. There are no hydrogen bonds observed, only an inter-molecular C-H?O inter-action.
Project description:The title complex, [Cu(0.31)Ni(0.69)(C(5)H(7)O(2))(2)], was isolated from the reaction of bis-(N,N-dimethyamino-ethanol)copper(II) with bis-(acetyl-acetonato)nickel(II), which yielded crystals with mixed sites at the central metal position; the refined copper-nickel occupancy ratio is 0.31?(4):0.69?(4). Two acetyl-acetonate ligands, related by a centre of symmetry, are coordinated to the central metal atom in a square-planar configuration while the methyne C atoms of the acetyl-acetonate ligands, ca 3.02?Å away, are orthogonal to this plane at the metal site.
Project description: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 O-Nb-O angles vary between 78.88?(8) and 102.78?(9)°, illustrating the significant distortion from ideal ocahedral geometry. The rest of the tetra-nuclear unit is generated through an inversion centre. The C atoms of two of the ethano-late mol-ecules are disordered over two sites [occupancy ratio 0.601?(12):0.399?(12)].
Project description:In the title compound, [Hf(C(5)H(4)F(3)O(2))(4)]·2C(7)H(8), the Hf(IV) atom, lying on a twofold rotation axis, is coordinated by eight O atoms from four 1,1,1-trifluoro-acetyl-acetonate ligands with an average Hf-O distance of 2.173?(1)?Å and O-Hf-O bite angles of 75.69?(5) and 75.54?(5)°. The coordination polyhedron shows a slightly distorted Archimedean square antiprismatic geometry. The asymmetric unit contains a toluene solvent mol-ecule. The crystal structure involves C-H?.F hydrogen bonds.
Project description:In the title compound, [Zr(C(5)H(4)F(3)O(2))(4)]·C(7)H(8), the Zr atom is in a square-anti-prismatic coordination geometry that comprises four O,O'-bidentate trifluoro-acetyl-acetonate ligands. The O-Zr-O bite angles of the acetonate ligands range from 75.27?(5) to 75.41?(5)°. The Zr atom is located on a twofold rotation axis.
Project description:The V(IV) atom in the title complex, [V(C(11)H(13)BrClN(2)O)(C(5)H(7)O(2))O], is six-coordinated by one phenolate O, one imino N and one amino N atom of the tridentate anionic Schiff base ligand, by one oxide O atom, and by two O atoms of an acetyl-acetonate anion, forming a distorted cis-VN(2)O(4) octa-hedral coordination geometry. The deviation of the V atom from the plane defined by the three donor atoms of the Schiff base ligand and one O atom of the acetyl-acetone ligand towards the oxide O atom is 0.256?(2)?Å.
Project description:In the title compound, [MoBr(2)(C(12)H(11)N(2))(C(12)H(10)N(2))(C(5)H(7)O(2))], the Mo(VI) atom is six-coordinated in a distorted octa-hedral geometry by two N atoms from the diphenyl-hydrazide(1-) and diphenyl-hydrazide(2-) ligands, two O atoms from a bidentate acetyl-acetonate ligand and two Br(-) ions. The mol-ecules form an inversion dimer via a pair of weak C-H?O hydrogen bonds and a ?-? stacking inter-action with a centroid-centroid distance of 3.7401?(12)?Å. Weak intra-molecular C-H?Br inter-actions and an intra-molecular ?-? stacking inter-action with a centroid-centroid distance of 3.8118?(15)?Å are also observed.