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Crystal structure of bis-(μ2-meth-anolato-κO:κO)hexa-methyl-bis-(μ2-tri-phenyl-acetato-κO:κO')bis-(μ2-tri-phenyl-acetato-κ2 O,O':κO)dialuminiumdi-lanthanum toluene tetra-solvate.

ABSTRACT: The title compound, [Al2La2(C20H15O2)4(CH3)6(CH3O)2]·4CH3C6H5 or [{La(Ph3CCOO)2(Me3AlOMe)}2]·4CH3C6H5, was formed in a reaction between lanthanum tris-(tetra-methyl-aluminate) and tri-phenyl-acetic acid (1:1) with unintended partial oxidation. The tri-phenyl-acetate ligand exhibits μ2-κ1 O:κ1 O' bridging and μ2-κ2 O,O':κ1 O semi-bridging coordination modes, forming a dimeric La2(μ-OCO)4 core. The semi-bridging tri-phenyl-acetate group provides additional bonding with an La3+ cation via the π-system of one of its phenyl rings. The tri-methyl-meth-oxy-aluminate anion, which is coordinated to the La3+ cation by its O atom, displays a rather long La-CMe bond. Two toluene mol-ecules are each disordered over two orientations about centres of symmetry with site occupancy factors of 0.5. The title compound represents the first example of an LnIII complex containing both alkyl alkoxide aluminate and π-bounded arene fragments.

SUBMITTER: Vinogradov AA

PROVIDER: S-EPMC6281095 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Crystal structure of bis(μ2-tri-phenyl-acetato-κO:κO')bis(diisobutylaluminium).

Project description:Single crystals of the title compound, [Al(iBu)2(O2CCPh3)]2 or [Al2(C4H9)4(C20H15O2)2], have been formed in the reaction between tris-(tetra-hydro-furan)-tris-(tri-phenyl-acetato)-neodymium, [Nd(Ph3CCOO)3(THF)3], and triiso-butyl-aluminium, Al(iBu)3, in hexane followed by low-temperature crystallization (243 K) from the reaction mixture. The structure has triclinic (P ) symmetry at 120 K. The dimeric complex [Al(iBu)2(O2CCPh3-μ-κO:κO')]2 is located about an inversion centre. The tri-phenyl-acetate ligand displays a μ-κO:κO'-bridging coordination mode, leading to the formation of an octa-gonal Al2O4C2 core. The complex displays HPh⋯CPh inter-molecular inter-actions.

| S-EPMC6509680 | biostudies-other

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| S-EPMC2961913 | biostudies-literature

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Project description:In the title centrosymmetric dinuclear complex, [Tm(2)(C(10)H(11)O(4))(6)(C(12)H(8)N(2))(2)], the unique Tm(III) ion is coordin-ated by five 3,4-dimethoxy-phenyl-acetate (DMPA) ligands and and a bis-chelating 1,10-phenanthroline (phen) ligand via seven O atoms and two N atoms, forming a distorted tricapped trigonal-prismatic environment. The DMPA ligands coordin-ate in the bis-chelate, bridging and bridging tridentate modes.

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Crystal structure of bis-(ethyl-enedi-thio)-tetra-thia-fulvalenium μ2-acetato-bis-[tri-bromido-rhenate(III)] 1,1,2-tri-chloro-ethane hemisolvate.

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| S-EPMC4908526 | biostudies-literature

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Project description:In the title chromium silanethiol-ate, [Cr(C(12)H(27)O(3)SSi)(2)(C(7)H(9)N)(2)]·C(7)H(8), the Cr(II) atom is coordinated by two S and two N atoms in a distorted square-planar geometrical arrangement. The mononuclear mol-ecule lies on a twofold axis that passes through the pyridine N atoms. The toluene solvent mol-ecule is equally disordered about a twofold axis.

| S-EPMC2969383 | biostudies-literature

trans-Dichlorido-bis-[tris(4-meth-oxy-phenyl)-phosphane]palladium(II) toluene solvate.

Project description:In the title compound, trans-[PdCl(2){P(4-MeOC(6)H(4))(3)}(2)]·C(7)H(8), the Pd(II) atom lies on a center of symmetry, resulting in a distorted trans-square planar geometry. The Pd-P and Pd-Cl bond lengths are 2.3409?(4) and 2.2981?(4)?Å, respectively. An intra-molecular C-H?Cl hydrogen bond occurs. In the crystal, weak C-H?O inter-actions are observed between the aromatic rings of adjacent mol-ecules. The toluene solvate molecule is equally disordered over two sets of sites.

| S-EPMC3009065 | biostudies-literature

Crystal structure of bis-[tetra-kis-(tri-phenyl-phosphane-κP)silver(I)] (nitrilo-tri-acetato-κ(4) N,O,O',O'')(tri-phenyl-phosphane-κP)argentate(I) with an unknown amount of methanol as solvate.

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| S-EPMC4778820 | biostudies-literature

Di-aqua-{μ2-N,N'-bis-[(cyclo-hexa-nyl-idene)amino]-oxamide}-bis-(tri-phenyl-phosphane)silver(I) dinitrate.

Project description:The dinuclear title compound, [Ag2(C14H22N4O2)(C18H15P)2(H2O)2](NO3)2, lies across an inversion center and consists of two [Ag(H2O)(PPh3)] units bridged by a bis-(cyclo-hexa-none)oxalydihydrazone ligand. The charge-balance is supplied by two nitrate anions. The symmetry-unique Ag(I) ion is in a distorted tetra-hedral geometry coordinated by a P atom from a tri-phenyl-phosphane ligand, an O atom from a water mol-ecule and a bis-(cyclo-hexa-none)oxalydihydrazone ligand bidentate chelating through the O atom and one of N atoms. In the crystal, O-H⋯O and N-H⋯O hydrogen bonds link the components, forming chains along the b-axis direction. These chains are connected through weak C-H⋯O hydrogen bonds, leading to the formation of a two-dimensional supra-molecular network parallel to (001).

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Bis(acetato-κO)bis-(thio-urea-κS)cobalt(II).

Project description:The title compound, [Co(CH3COO)2(CH4N2S)2], is isotypic with the corresponding Zn(II) complex. The metal atom is in a distorted tetra-hedral coordination environment with the two S atoms from two thio-urea ligands and two O atoms from two acetate anions as the coordinating atoms. All H atoms of the thio-urea ligands are involved in N-H⋯O and N-H⋯S hydrogen bonds, leading to a three-dimensional network.

| S-EPMC3998386 | biostudies-literature

Di-μ-acetato-κO:O'-bis-{[2-(2-pyrid-yl)phenyl-κC,N]palladium(II)}.

Project description:In the title complex, [Pd(2)(C(11)H(8)N)(2)(C(2)H(3)O(2))(2)], each Pd(II) ion has a distorted square-planar environment, being surrounded by one C, one N and two O atoms. The Pd⋯Pd distance is 2.8721 (3) Å. In the crystal structure, the mol-ecules are linked by inter-molecular C-H⋯O inter-actions.

| S-EPMC2960165 | biostudies-literature

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