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Bis[?(2)-1,1-(butane-1,4-di-yl)-2,3-dicyclo-hexyl-guanidinato]bis-[(tetra-hydro-furan)-lithium](Li-Li).

ABSTRACT: In the dinuclear centrosymmetric title complex, [Li(2)(C(17)H(30)N(3))(2)(C(4)H(8)O)(2)], the Li(+) cation is coordinated by three N atoms from two guanidinate ligands and an O atom from tetra-hydro-furan (THF) in a strongly distorted tetrahedral environment. In the guanidinate-bridged THF-stabilized dimer the Li?Li separation is short at 2.479?(8)?Å.

SUBMITTER: Han H

PROVIDER: S-EPMC3011579 | biostudies-literature | 2010 Nov

REPOSITORIES: biostudies-literature

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Bis[μ(2)-1,1-(butane-1,4-di-yl)-2,3-dicyclo-hexyl-guanidinato]bis-[(tetra-hydro-furan)-lithium](Li-Li).

Han Hongfei H Li Wenjuan W Li Haoyang H

Acta crystallographica. Section E, Structure reports online 20101117 Pt 12

In the dinuclear centrosymmetric title complex, [Li(2)(C(17)H(30)N(3))(2)(C(4)H(8)O)(2)], the Li(+) cation is coordinated by three N atoms from two guanidinate ligands and an O atom from tetra-hydro-furan (THF) in a strongly distorted tetrahedral environment. In the guanidinate-bridged THF-stabilized dimer the Li⋯Li separation is short at 2.479 (8) Å. ...[more]

PMID: 21589264

Similar Datasets

Di-?-chlorido-bis-{[N,N'-dicyclo-hexyl-N'',N''-bis-(trimethyl-sil-yl)guanidinato-?N,N'](tetra-hydro-furan-?O)magnesium(II)}.

Project description:The dinuclear title complex, [Mg(2)(C(19)H(40)N(3)Si(2))(2)Cl(2)(C(4)H(8)O)(2)], lies on a center of inversion. The Mg(2+) ions are bonded to a chelating N,N'-bonded guanidinate anion, a tetra-hydro-furan mol-ecule and two bridging chloride anions. The geometry of the resulting five-coordinated Mg(2+) ion is a very distorted square-based pyramid with the O atom in the apical position.

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{Bis[N,N'-dicyclo-hexyl-N'',N''-bis-(tri-meth-yl-sil-yl)guanidinato-?(2)N,N']neo-dymium(III)}di-?-chlorido-[bis-(tetra-hydro-furan-?O)lithium].

Project description:In the title monomeric rare earth complex, [LiNd(C(19)H(40)N(3)Si(2))(2)Cl(2)(C(4)H(8)O)(2)], the [(Me(3)Si)(2)NC(NCy)(2)](2)Nd(+) (Me is methyl, Cy is cyclo-hex-yl) and Li(THF)(2) (+) units (THF is tetra-hydro-furan) are connected by two bridging Cl atoms. The Nd(3+) ion is coordinated by two guanidinate ligands and two Cl atoms, forming a distorted chelating octa-hedral geometry. The Li(+) ion is four-coordinated by two Cl atoms and two O atoms from THF mol-ecules in a distorted tetra-hedral geometry.

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3,3'-(Butane-1,4-di-yl)diimidazole-1,1'-diium bis-(triiodide).

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Crystal structure of butane-1,4-diyl bis-(furan-2-carboxyl-ate).

Project description:The asymmetric unit of the title compound, C14H14O6, a monomeric compound of poly(butyl-ene 2,5-furandi-carboxyl-ate), consists of one half-mol-ecule, the whole all-trans mol-ecule being generated by an inversion centre. In the crystal, the mol-ecules are inter-connected via C-H⋯O inter-actions, forming a mol-ecular sheet parallel to (10). The mol-ecular sheets are further linked by C-H⋯π inter-actions.

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3,3'-Dimethyl-1,1'-(butane-1,4-di-yl)diimidazolium bis-(tetra-fluoro-borate).

Project description:The title compound, C(12)H(20)N(4) (2+)·2BF(4) (-), was prepared by the anion exchange of a dibromide ionic liquid with sodium tetra-fluoro-borate. The asymmetric unit contains one half of the imidazolium cation, which lies about an inversion centre at the mid-point of the central C-C bond of the linking butyl chain. The two planar imidazole rings (r.m.s. deviation = 0.0013?Å) are strictly parallel and separated by 2.625?(7)?Å [vertical distance between the centroids of two imidazole rings], giving the mol-ecule a stepped appearance. In the crystal structure, inter-molecular C-H?F hydrogen bonds link the cations and anions, generating a three-dimensional network.

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2,2'-Dichloro-1,1'-[(butane-1,4-diyldi-oxy)bis-(nitrilo-methyl-idyne)]dibenzene.

Project description:The mol-ecule of the title compound, C(18)H(18)Cl(2)N(2)O(2), lies across a crystallographic inversion centre and adopts an E configuration with respect to the azomethine C=N bond. The imino group is coplanar with the aromatic ring. Within the mol-ecule, the planar units are parallel, but extend in opposite directions from the dimethyl-ene bridge. In the crystal structure, the title compound exhibits a layer packing structure via weak π-π stacking inter-actions [inter-molecular plane-to-plane distances between adjacent aromatic rings are 3.461 (3) Å]. Mol-ecules in each layer are linked by inter-molecular C-H⋯O hydrogen-bonding inter-actions.

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1,1'-(Butane-1,4-di-yl)bis-[2-(pyridin-2-yl)-1H-benzimidazole].

Project description:The complete mol-ecule of the title compound, C(28)H(24)N(6), is generated by inversion symmetry with the inversion centre located at the mid-point of the central C-C bond of the butanediyl unit. The benzimidazole and pyridine rings are almost coplanar, the dihedral angle between their mean planes being 6.86 (11)°.

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Bis(nona-fluoro-butane-sulfonato-κO)dioxidotris(tetra-hydro-furan-κO)uranium(VI).

Project description:In the title compound, [U(C(4)F(9)O(3)S)O(2)(C(4)H(8)O)(3)], each U(VI) ion is located on a twofold rotation axis and is seven-coordinated by two terminal O atoms in the axial positions [U-O = 1.737 (5) Å] and five O atoms from two monodentate nona-fluoro-butane-sulfonate (NfO(-)) and three tetra-hydro-furan ligands in the equatorial plane [U-O = 2.388 (5)-2.411 (4) Å] in a penta-gonal-bipyramidal geometry. The crystal packing exhibits weak inter-molecular C-H⋯O hydrogen bonds involving the non-coordinated O atoms of the NfO(-) ligands.

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2,2'-{1,1'-[Butane-1,4-diyl-bis(oxy-nitrilo)]di-ethylidyne}di-1-naphthol.

Project description:The title compound, C(28)H(28)N(2)O(4), was synthesized by the reaction of 2-acetyl-1-naphthol with 1,4-bis-(amino-oxy)butane in ethanol. The molecule, which lies about an inversion centre, adopts a linear structure, in which the oxime groups and naphthalene ring systems assume an anti conformation. The intra-molecular inter-planar distance between parallel naphthalene rings is 1.054?(3)?Å. Intra-molecular O-H?N hydrogen bonds are formed between the oxime nitro-gen and hydr-oxy groups.

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1,1'-(Butane-1,4-di-yl)diimidazolium dinitrate.

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