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Tetra-ethyl-ammonium tetra-kis-(1,1,1,5,5,5-hexa-fluoro-acetyl-acetonato)terbate(III).

ABSTRACT: The title compound, (C(8)H(20)N)[Tb(C(5)HF(6)O(2))(4)], is a tetrakis ?-diketonate complex of hexa-fluoro-acetyl-acetone with terbium(III), and tetra-ethyl-ammonium as the counter-ion. This compound shows typical green terbium(III) luminescence upon excitation at about 335?nm. The coordination geometry around the Tb(III) atom is a slightly distorted square anti-prism. One hexa-fluoro-acetyl-acetone ligand has a disordered CF(3) group [occupancies of 0.575?(4) and 0.425?(4)]. A three-dimensional network is built up by linkage of Tb(III) complexes via C-H?F inter-actions.

SUBMITTER: Van Deun R

PROVIDER: S-EPMC3274855 | biostudies-other | 2012 Feb

REPOSITORIES: biostudies-other

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Tetra-ethyl-ammonium tetra-kis-(1,1,1,5,5,5-hexa-fluoro-acetyl-acetonato)terbate(III).

Van Deun Rik R Van Der Voort Pascal P Van Driessche Isabel I Van Hecke Kristof K

Acta crystallographica. Section E, Structure reports online 20120107 Pt 2

The title compound, (C(8)H(20)N)[Tb(C(5)HF(6)O(2))(4)], is a tetrakis β-diketonate complex of hexa-fluoro-acetyl-acetone with terbium(III), and tetra-ethyl-ammonium as the counter-ion. This compound shows typical green terbium(III) luminescence upon excitation at about 335 nm. The coordination geometry around the Tb(III) atom is a slightly distorted square anti-prism. One hexa-fluoro-acetyl-acetone ligand has a disordered CF(3) group [occupancies of 0.575 (4) and 0.425 (4)]. A three-dimensional ...[more]

PMID: 22346802

Similar Datasets

Crystal structure of tetra-kis-(1,1,1,5,5,5-hexa-fluoro-acetyl-acetonato)hafnium(IV).

Project description:The crystal structure of the title compound, [Hf(C5HF6O2)4], has been determined. The asymmetric unit contains two Hf(hfac)4 mol-ecules (hfac = 1,1,1,5,5,5-hexa-fluoro-acetyl-acetonate); both are located on general positions and have identical structures apart from the disorder involving three CF3 groups in one of the two mol-ecules. The mol-ecules of Hf(hfac)4 are arranged in layers that are parallel to the ab plane, and the coordination geometry of each hafnium(IV) center is a distorted square anti-prism. An inter-esting aspect of the structure is that the hfac ligands are arranged so that the Hf(hfac)4 mol-ecules have idealized 2 point symmetry, in which two of the hfac groups bridge between the two squares. Although all other M(β-diketonate)4 compounds of Hf (and Zr) also have square-anti-prismatic geometries; in almost all of them the ligands are arranged so that the mol-ecules have 222 point symmetry (in which none of the hfac ligands bridges between the two squares). The factors that favor one structure over another are not clear.

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Project description:In the title compound, (C(8)H(20)N)[ReBr(C(5)H(7)O(2))(CO)(3)], the Re(I) atom in the rhenate anion is surrounded by three carbonyl ligands orientated in a facial arrangement, a bromide ligand and an acetyl-acetonate ligand, leading to a distorted octa-hedral ReC(3)BrO(2) coordination with a O-Re-O bite angle of 85.66?(7)°. An array of C-H?O and C-H?Br hydrogen-bonding inter-actions between the cations and the surrounding rhenate anions stabilize the crystal structure.

| S-EPMC3050364 | biostudies-literature

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Tetra-kis(1,1,1-trifluoro-acetyl-acetonato-?O,O')zirconium(IV) toluene solvate.

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.

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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.

| S-EPMC2961404 | biostudies-literature

cyclo-Tetra-?-oxido-tetra-kis-[(acetyl-acetonato-?O,O')bis-(ethano-lato-?O)niobium(V)].

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)].

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Tetra-butyl-ammonium tetra-kis-(trimethyl-silanolato-κO)ferrate(III).

Project description:In the title salt, (C(16)H(36)N)[Fe(C(3)H(9)OSi)(4)], the cation contains a central N atom bonded to four n-butyl alkyl groups in a tetra-hedral arrangement, while the anion contains a central Fe(III) atom tetra-hedrally coordinated by four trimethyl-silanolate ligands.

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Project description:The title compound, [Yb(C(5)HF(6)O(2))(2)(C(20)H(14)N(4))(H(2)O)]Cl·CH(3)OH·H(2)O, adopts an eight-coordinated geometry around the Yb(III) atom consisting of a 4'-(4-pyrid-yl)-2,2':6',2''-terpyridine (pytpy) ligand, two 1,1,1,5,5,5-hexa-fluoro-acetyl-acetonate (hfac) anions and an aqua ligand. In the solid state, the compound forms supra-molecular chains running along the b-axis via inter-molecular hydrogen bonds between the Yb-OH(2) unit and the N-atom donor of the 4-pyridyl pendant of pytpy, with an O?N distance of 2.686?(4)?Å. A chloride counter-anion and lattice methanol and water solvent mol-ecules occupy a hydro-philic columnar space along the coordination chains. O-H?Cl hydrogen bonds occur. The two water molecules and the four trifluoromethyl groups are disordered over two sets of sites, each with different occupancy ratios.

| S-EPMC3254304 | biostudies-literature

Di-?-hydroxido-bis[tris(1,1,1,5,5,5-hexa-fluoro-acetyl-acetonato-?O,O')hafnium(IV)] acetone solvate.

Project description:The binuclear title compound, [Hf(2)(C(5)HF(6)O(2))(6)(OH)(2)]·C(3)H(6)O, contains an Hf(IV) atom which is eight coordinated and surrounded by three chelating ?-diketonato 1,1,1,5,5,5-hexa-fluoro-acetyl-acetonate (hfaa) ligands and two bridging OH groups situated on a twofold rotation axis. The HfO(8) coordination polyhedron shows a slightly distorted Archimedean square anti-prismatic coordination with average Hf-O, C-O, C-C(Me) distances of 2.19?(2), 1.26?(2) and 1.49?(2)?Å, respectively, and an O-Hf-O bite angle of 75.3?(5)°. Weak O-H?O hydrogen bonding inter-actions are observed between one of the bridging hydr-oxy groups and the disordered solvent mol-ecule.

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Bis(4-chloro-benzyl-ammonium) tetra-kis(2,6-diethyl-anilinium) cyclo-hexa-phosphate tetra-hydrate.

Project description:In the crystal of the title hydrated mol-ecular salt, 2C(7)H(9)ClN(+)·4C(10)H(16)N(+)·P(6)O(18) (6-)·4H(2)O, the packing consists of a three-dimensional O-H?O and N-H?O hydrogen-bonded network resulting from the association of anionic layers built up from centrosymmetric cyclohexaphosphate ions and water mol-ecules and the two types of organic cations.

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