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Cis-9,10-Bis(bromo-meth-yl)-1,4,5,8-tetra-oxadeca-lin.

ABSTRACT: The title compound, C(8)H(12)Br(2)O(4), is a bicyclic ketal in which the two six-membered rings are cis to one another and assume a double-chair conformation. A crystallographic twofold axis bisects the molecule.

SUBMITTER: Yambo CL

PROVIDER: S-EPMC2961570 | biostudies-literature | 2008 May

REPOSITORIES: biostudies-literature

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cis-9,10-Bis(bromo-meth-yl)-1,4,5,8-tetra-oxadeca-lin.

Yambo Courtney L CL Williams Patrick S PS Au David J DJ Jones Daniel S DS Etzkorn Markus M

Acta crystallographica. Section E, Structure reports online 20080530 Pt 6

The title compound, C(8)H(12)Br(2)O(4), is a bicyclic ketal in which the two six-membered rings are cis to one another and assume a double-chair conformation. A crystallographic twofold axis bisects the molecule. ...[more]

PMID: 21202679

Similar Datasets

Poly[[bis-{?2-1,2-bis-[(1H-imidazol-1-yl)meth-yl]benzene}(?4-9,10-dioxo-9,10-dihydro-anthracene-1,4,5,8-tetra-carbox-yl-ato)dicobalt(II)] dihydrate].

Project description:The title complex, {[Co2(C18H4O10)(C14H14N4)2]·2H2O} n was synthesized from CoCl2·6H2O, 9,10-dioxo-9,10-dihydro-anthracene-1,4,5,8-tetra-carb-oxy-lic acid (H4AQTC) and 1,2-bis-[(1H-imidazol-1-yl)meth-yl]benzene (o-bix) in water. The anthraquinone unit is located about a crystallographic center of inversion. Each asymmetric unit therefore contains one Co(II) atom and one o-bix ligand, as well as half an AQTC(4-) ligand and an additional solvent water mol-ecule. The Co(II) ions are tetra-hedrally surrounded by two O atoms from two AQTC(4-) anions and by two N atoms from two o-bix ligands, forming a two-dimensional coordination polymer. The solvent water mol-ecules are connected to the carboxyl-ate groups by O-H?O hydrogen bonds. Additional weak C-H?O hydrogen bonds are observed in the crystal structure.

| S-EPMC3588523 | biostudies-literature

2,3-Bis(methyl-sulfan-yl)-1,4,5,8-tetra-thia-fulvalene.

Project description:In the title compound, C(8)H(8)S(6), the five-membered rings form a dihedral angle of 25.06?(9)°. In the absence of short inter-molecular contacts, the mol-ecules are packed by van der Waals forces in the crystal.

| S-EPMC3011482 | biostudies-literature

2,5-Bis(bromo-meth-yl)biphen-yl.

Project description:In the title compound, C(14)H(12)Br(2), the Br atoms lie on opposite sides of their ring plane. The biphenyl inter-planar angle is 53.52?(8)°. The packing is characterized by several H?Br contacts to each Br atom, but at long distances of 3.07-3.43?Å.

| S-EPMC2969676 | biostudies-literature

2,6-Bis(bromo-meth-yl)pyridine.

Project description:In the title mol-ecule, C7H7Br2N, the C-Br vectors of the bromo-methyl groups extend to opposite sides of the pyridine ring and are oriented nearly perpendicular to its plane. In the crystal, the mol-ecules related by a c-glide-plane operation are arranged into stacks along the c axis, with centroid-centroid distances between neighboring aromatic rings of 3.778?(2)?Å. A short Br?Br contact of 3.6025?(11)?Å is observed within a pair of inversion-related mol-ecules.

| S-EPMC3914046 | biostudies-literature

2,3,6,7-Tetra-kis(bromo-meth-yl)naphthalene.

Project description:The title compound, C(14)H(12)Br(4), crystallizes with imposed inversion symmetry. In the crystal, the mol-ecules pack in layers parallel to (10). The layers involve two Br?Br and one H?Br contact. Between the layers, one contact each of types Br?Br, H?Br and Br?? is observed.

| S-EPMC3007070 | biostudies-literature

2,3-Bis(ethyl-sulfan-yl)-1,4,5,8-tetra-thia-fulvalene-6,7-dicarbonitrile.

Project description:In the title compound, C(12)H(10)N(2)S(6), all non-H atoms, except for those in the ethyl groups, lie in the same non-crystallographic plane, with a r.m.s. deviation of 0.0366?(5)?Å. In the crystal structure, mol-ecules are linked through weak C-H?N hydrogen bonds between methyl and cyano groups, forming centrosymmetric dimers. The dimers are arranged along the a axis, due to inter-molecular N?S [3.337?(4)?Å] inter-actions.

| S-EPMC3213538 | biostudies-literature

Bis{2-[(4-bromo-phen-yl)imino-meth-yl]pyridine-κN,N'}copper(I) tetra-phenyl-borate.

Project description:In the crystal structure of the title compound, [Cu(C(12)H(9)BrN(2))(2)](C(24)H(20)B), the copper(I) cation is coordinated by four N atoms of two crystallographically independent 2-[(4-bromo-phen-yl)imino-meth-yl]pyridine ligands within a distorted tetra-hedron.

| S-EPMC2961942 | biostudies-literature

2,3-Bis[(2-cyano-eth-yl)sulfan-yl]-1,4,5,8-tetra-thia-fulvalene-6,7-dicarbonitrile.

Project description:In the title compound, C(14)H(8)N(4)S(6), the two five-membered rings lie in the same plane with an r.m.s. deviation of 0.0334?(5)?Å. The crystal structure features inter-molecular S?N inter-actions of 3.295?(4)?Å.

| S-EPMC3007503 | biostudies-literature

Hexane-1,6-diaminium bis-[3,4,5,6-tetra-bromo-2-(meth-oxy-carbon-yl)benzoate] methanol disolvate.

Project description:In the title compound, C(6)H(18)N(2) (2+)·2C(9)H(3)Br(4)O(4) (-)·2CH(4)O, the carboxyl-ate and meth-oxy-carbonyl groups in one of the anions form dihedral angles of 71.9?(3) and 60.7?(3)°, respectively, with the aromatic ring while in the other anion these angles are 68.4?(3) and 56.8?(3)°, respectively. In the crystal, the constituent units are linked into a two-dimensional network parallel to the ab plane by N-H?O and O-H?O hydrogen bonds.

| S-EPMC3201551 | biostudies-literature

Poly[tetra-aqua-(?(6)-9,10-dioxo-9,10-dihydro-anthracene-1,4,5,8-tetra-carboxyl-ato)dimanganese(II)].

Project description:The title complex, [Mn(2)(C(18)H(4)O(10))(H(2)O)(4)](n), was synthesized from manganese(II) chloride tetra-hydrate and 9,10-dioxo-9,10-dihydro-anthracene-1,4,5,8-tetra-carb-oxy-lic acid (H(4)AQTC) in water. The anthraquinone unit is located about a crystallographic center of inversion. Each asymmetric unit therefore contains one Mn(II) atom, two water ligands and one half AQTC(4-) anion. The Mn(II) atom is coordinated in a distorted octa-hedral geometry by four O atoms from three AQTC(4-) ligands and two water O atoms. Two of the carboxyl-ate groups coordinate one Mn(II) atom in a chelating mode, whereas the others each coordinate two Mn(II) atoms. Each AQTC(4-) tetra-anion therefore coordinates six different Mn(II) ions and, as a result, a three-dimensional coordination polymer is formed. O-H?O hydrogen bonds, some of them bifurcated, between water ligands and neighboring water or anthraquinone ligands are observed in the crystal structure.

| S-EPMC3393211 | biostudies-other

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