Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Tetra-kis(μ-acetato-κ²O:O')bis-[(tetra-hydro-furan-κO)chromium(II)].

ABSTRACT: The title compound, [Cr₂(C₂H₃O₂)₄(C₄H₈O)₂] or [Cr₂(OAc)₄(THF)₂] (OAc is acetate, THF is tetra-hydro-furan), was obtained by recrystallization of anhydrous chromium(II) acetate [Cr₂(OAc)₄] from hot tetra-hydro-furan. The centrosymmetric complex forms monoclinic crystals, space group C2/c, and consists of two Cr^II atoms bridged by four acetate ligands. Additionally, each Cr^II atom is coordinated by a terminal THF ligand, which leads to a square-pyramidal coordination.

SUBMITTER: Heiser C

PROVIDER: S-EPMC10561221 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Publications

Tetra-kis(μ-acetato-κ2O:O')bis-[(tetra-hydro-furan-κO)chromium(II)].

Heiser Christian C Merzweiler Kurt K

IUCrData 20230922 Pt 9

The title compound, [Cr2(C2H3O2)4(C4H8O)2] or [Cr2(OAc)4(THF)2] (OAc is acetate, THF is tetra-hydro-furan), was obtained by recrystallization of anhydrous chromium(II) acetate [Cr2(OAc)4] from hot tetra-hydro-furan. The centrosymmetric complex forms monoclinic crystals, space group C2/c, and consists of two CrII atoms bridged by f ...[more]

PMID: 37818475

Similar Datasets

catena-Poly[triethyl-ammonium [[tetra-μ-acetato-κ(8)O:O'-dicuprate(II)]-μ-acetato-κ(2)O:O'] tetra-hydro-furan monosolvate].

Project description:In the title compound, {[(C(2)H(5))(3)NH][Cu(2)(CH(3)COO)(5)]·C(4)H(8)O}(n), the two different Cu(II) atoms are coordinated in a pseudo-square-pyramidal environment by five O atoms from the acetate ligands. Neighbouring pairs of Cu(II) atoms are linked by four basally coordinating bridging acetate ligands as in the crystal structure of copper acetate monohydrate. The fifth, apically coordinating ligand links two of the dicopper tetra-acetate paddlewheel-units together, thus building a linear coordination polymer which extends along [10-1]. Each apical acetate ligand is linked by an N-H⋯O hydrogen bond to a triethyl-ammonium cation. Weak C-H⋯O hydrogen bonding interactions also occur.

| S-EPMC3435572 | biostudies-literature

Tetra-kis(μ-penta-fluoro-benzoato-κO:O')bis-[(tetra-hydro-furan-κO)molybdenum(II)].

Project description:In the asymmetric unit of the title compound, [Mo(2)(C(7)F(5)O(2))(4)(C(4)H(8)O)(2)], two independent half-mol-ecules are present, which are completed by a crystallographically imposed center of inversion between the individual Mo atoms. In each mol-ecule, four penta-fluoro-benzoate anions bridge the quadruply bonded Mo(2) (4+) unit that is, in addition, axially coordinated by two O atoms of tetra-hydro-furan (THF) mol-ecules. In the two independent mol-ecules, the mean Mo-Mo bond length is 2.110 Å. Since the THF mol-ecules are equally disordered over two sets of sites, there are four different Mo-O distances in both half-mol-ecules with an overall mean of 2.542 Å. A zigzag chain is formed by π-π stacking inter-actions between penta-fluoro-phenyl rings, indicated by a centroid-centroid distance of 3.7054 (11) Å and a centroid-to-plane distance of 3.4169 (3) Å. The extension of the unit gives a three-dimensional network structure with the THF mol-ecules located in the voids.

| S-EPMC3200930 | biostudies-literature

Crystal structure of bromido-penta-kis-(tetra-hydro-furan-κO)magnesium bis-[1,2-bis-(di-phenyl-phosphan-yl)benzene-κ2 P,P']cobaltate(-1) tetra-hydro-furan disolvate.

Project description:Structural characterization of the ionic title complex, [MgBr(THF)5][Co(dpbz)2]·2THF [THF is tetra-hydro-furan, C4H8O; dpbz is 1,2-bis-(di-phenyl-phosphan-yl)benzene, C30H24P2], revealed a well-separated cation and anion co-crystallized with two THF solvent mol-ecules that inter-act with the cation via weak C-H⋯O contacts. The geometry about the cobalt center is pseudo-tetra-hedral, as is expected for a d 10 metal center, only deviating from an ideal tetra-hedral geometry because of the restrictive bite angles of the bidentate phosphane ligands. Three THF ligands of the cation and one co-crystallized THF solvent mol-ecule are each disordered over two orientations. In the extended structure, the cations and THF solvent mol-ecules are arranged in (100) sheets that alternate with layers of anions, the latter of which show various π-inter-actions, which may explain the particular packing arrangement.

| S-EPMC6362642 | biostudies-literature

catena-Poly[[tetra-kis(μ(2)-acetato-κO:O')dicopper(II)(Cu-Cu)]-μ(2)-acetato-κO:O'-[bis-[μ(2)-3-(dimethyl-amino)propan-1-olato]-κN,O:O;κO:N,O-bis-[(tetra-hydro-furan-κO)copper(II)]]-μ(2)-acetato-κO:O'].

Project description:The title complex, [Cu(4)(C(5)H(12)NO)(2)(C(2)H(3)O(2))(6)(C(4)H(8)O)(2)](n), consists of dinuclear [Cu(2)(C(5)H(12)NO)(2)(THF)(2)] (THF is tetra-hydro-furan) and [Cu(2)(CH(3)COO)(4)] units linked through acetate ions, generating parallel one-dimensional polymeric chains propagating in the [10] direction. In the first dinuclear unit, Cu(II) ions related by inversion symmetry are bridged by two 3-(dimethyl-amino)propan-1-olate ligands. Likewise, a pair of inversion-related Cu(II) ions are bridged by four acetate groups. The crystallographically independent Cu centers are linked to one another by a single bridging acetate group, generating an infinite chain. The distorted square-pyramidal coordination of the first metal center is completed with an apical THF mol-ecule, with a long Cu-O bond length of 2.476 (5) Å. The geometry around the other metal atom is close to octa-hedral, and the Cu⋯Cu separation in this unit is 2.652 (1) Å. The distance between the metal centers in the first dinuclear unit is considerably longer [3.068 (1) Å], suggesting little or no bonding inter-action. The Cu⋯Cu separation between two acetate-bridged independent Cu centers is 4.860 (2) Å. The THF mol-ecule has methyl-ene groups disordered over two positions, with occupancies of 0.608 (13) and 0.392 (13).

| S-EPMC2960524 | biostudies-literature

Bis(μ-2-{bis-[(2-oxidobenzyl-idene)amino]-meth-yl}phenolato)bis-[(tetra-hydro-furan)-samarium(III)] tetra-hydro-furan disolvate.

Project description:In the centrosymmetric binuclear complex of the title solvate, [Sm(2)(C(21)H(15)N(2)O(3))(2)(C(4)H(8)O)(2)]·2C(4)H(8)O, the Sm(III) is coordin-ated in a distorted monocapped octa-hedral geometry by four O atoms and two N atoms from two tridentate deprotonated 2-{bis-[(2-oxidobenzyl-idene)amino]-meth-yl}phenolate ligands and an O atom of a tetra-hydro-furan (THF) mol-ecule. The Sm⋯Sm distance in the complex is 3.8057 (4) Å. Parts of the coordinating THF mol-ecule are disordered over two sets of sites in a 0.56 (3):0.44 (3) ratio. The complex and solvent mol-ecules are linked into a three-dimensional structure via C-H⋯O hydrogen-bonding inter-actions.

| S-EPMC3344343 | biostudies-literature

Tetra-kis(μ-acetato-κ(2)O:O')-bis-[(3-pyridine-carboxaldehyde-κN')]dicopper(II)(Cu-Cu).

Project description:The binuclear title compound, [Cu(2)(CH(3)CO(2))(4)(C(6)H(5)NO)], is located about a center of inversion. The Cu(II) atoms are connected [Cu-Cu = 2.6134 (5) Å] and bridged by four acetate ligands. Their distorted octa-hedral coordination geometry is completed by a terminal pyridine N atom of a 3-pyridincarboxaldehyde ligand. In the crystal, the complex mol-ecules are linked by C-H⋯O hydrogen bonds, forming two-dimensional networks lying parallel to the ab plane. These networks are linked via C-H⋯O hydrogen bonds involving inversion-related 3-pyridinecarboxaldehyde ligands, forming a three dimensional supra-molecular architecture.

| S-EPMC3515103 | biostudies-literature

Crystal structure of di-μ-tri-hydro-(penta-fluoro-phenyl)-borato-tetra-kis-(tetra-hydro-furan)-disodium.

Project description:The title compound, [Na(μ-C6F5BH3)(C4H8O)2]2, represents a dimeric structure of sodium and organoborohydride, located about a centre of inversion. The Na⋯B distances of 2.7845 (19) and 2.7494 (18) Å were apparently longer than the Li⋯B distances (2.403-2.537 Å) of the lithium organotri-hydro-borates in the previous reports. Moreover, an inter-action between the sodium atom and one fluorine atom on the 2-position of the benzene ring is observed [Na-F = 2.6373 (12) Å]. In the crystal, the dimeric mol-ecules are stacked along the b-axis via a π-π inter-action between the benzene rings.

| S-EPMC7001818 | biostudies-literature

Crystal structure of an unknown tetra-hydro-furan solvate of tetra-kis-(μ 3-cyanato-κ(3) N:N:N)tetra-kis-[(triphenyl-phosphane-κP)-silver(I)].

Project description:In the title compound, [{[(C6H5)3P]Ag}4{NCO}4], a distorted Ag4N4-heterocubane core is set up by four Ag(I) ions being coordinated by the N atoms of the cyanato anions in a μ 3-bridging mode. In addition, a tri-phenyl-phosphine ligand is datively bonded to each of the Ag(I) ions. Intra-molecular Ag⋯Ag distances as short as 3.133 (9) Å suggest the presence of argentophilic (d (10)⋯d (10)) inter-actions. Five moderate-to-weak C-H⋯O hydrogen-bonding inter-actions are observed in the crystal structure, spanning a three-dimensional network. A region of electron density was treated with the SQUEEZE procedure in PLATON [Spek (2015). Acta Cryst. C71, 9-18] following unsuccessful attempts to model it as being part of disordered tetra-hydro-furan solvent mol-ecules. The given chemical formula and other crystal data do not take into account these solvent mol-ecules.

| S-EPMC4647345 | biostudies-literature

Tetra-kis[μ-N,N'-bis-(4-bromo-phen-yl)formamidinato-κN:N']dimolyb-denum(II) tetra-hydro-furan solvate.

Project description:The title complex, [Mo(2)(C(13)H(9)N(2)Br(2))(4)]·C(4)H(8)O, contains a quadruply bonded Mo(2) (4+) unit equatorially coordinated by four N,N'-bis-(4-bromo-phen-yl)formamidinate ligands, forming a dimetal paddlewheel complex. The centroid of the Mo-Mo bond is located on a special position with 2/m symmetry. In the crystal, complex mol-ecules are linked by Br⋯Br inter-actions [3.7049 (10) Å]. The disordered solvent mol-ecule could not be satisfactorily modelled and was therefore eliminated from the final refinement.

| S-EPMC3099865 | biostudies-literature

Crystal structure of bis-[tetra-kis-(tetra-hydro-furan-κO)lithium] bis[μ-2,2',2''-methanetriyltris(4,6-di-tert-butylphenolato)-κ4O,O':O',O'']-dimagnesiate.

Project description:The title ion-association metal complex, [Li(C4H8O)4]2[Mg2(C43H61O3)2], has been synthesized from the tridentate phenolic ligand tris-(3,5-di-tert-butyl-2-hy-droxy-phen-yl)methane in tetra-hydro-furan (THF). The aryl-oxo magnesiate complex anion is binuclear with each Mg2O4 complex unit inversion-related and bridged through the two tridentate chelating phenolate O-donors of the ligand. The complex centres have a distorted tetra-hedral stereochemistry [Mg-O range 1.8796 (17)-2.0005 (16) Å] and an Mg⋯Mg separation of 2.9430 (14) Å]. The LiO4 coodination sphere of the cation comprises four THF O-donor atoms and has a slightly distorted tetra-hedral conformation [Li-O range 1.899 (5)- 1.953 (5) Å]. In the crystal, a number of stabilizing intra-anion C-H⋯O hydrogen-bonding inter-actions are present but no inter-species associations are found.

| S-EPMC5499282 | biostudies-literature