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Biphenyl-2,2'-diyl diacetate.

ABSTRACT: In the title compound, C(16)H(14)O(4), a derivative of 2,2'-biphenol, the benzene rings are oriented at a dihedral angle of 58.32?(3)°.

SUBMITTER: Hu CH

PROVIDER: S-EPMC2959795 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Di-tert-butyl 2,2'-(biphenyl-2,2'-diyl-dioxy)diacetate.

Project description:The title compound, C(24)H(30)O(6), does not exhibit ?-? inter-actions due to the steric effect of the bulky tert-butyl groups present in the mol-ecule. The presence of these groups at the 2 and 2' positions hinders the free motion of the benzene rings relative to each other, causing them to adopt an anti-periplanar arrangement. The benzene rings are twisted by just under 50.96?(17)° with respect to each other. The carbonyl groups within the mol-ecule are directed in different directions, one towards the biphenyl group and the other away from it. The mol-ecules are linked together by C=O?H-C hydrogen bonds.

| S-EPMC2962041 | biostudies-other

Di-tert-butyl 2,2'-[(biphenyl-4,4'-diyl)-dioxy]diacetate.

Project description:The complete molecule of the title compound, C(24)H(30)O(6), is generated by a crystallographic inversion centre. In the unique part of the mol-ecule, the four-atom -O-CH(2)-C(= O)-O- chain between the benzene ring and the tert-butyl group assumes a zigzag conformation [O-C-C-O torsion angle = -162.3?(1)°].

| S-EPMC3006834 | biostudies-other

Diethyl 2,2'-(biphenyl-2,2'-diyldi-oxy)diacetate.

Project description:In the title compound, C(20)H(22)O(6), the mean planes through the benzene rings make a dihedral angle of 59.82?(7)° with each other. Weak inter-molecular C-H?O inter-actions together with ?-? stacking inter-actions [centroid-centroid distance = 3.830?(1)?Å] between benzene rings are observed in the crystal packing.

| S-EPMC3007496 | biostudies-literature

1-Phenylethane-1,2-diyl 1,1'-biphenyl-2,2'-dicarboxylate.

Project description:In the title compound, C(22)H(16)O(4), the 7-phenyl ring is inclined at dihedral angles of 36.73?(9) and 69.37?(9)° with respect to the biphenyl benzene rings. The two benzene rings of the biphenyl unit form a dihedral angle of 55.99?(8)°. There are no significant hydrogen bonds observed in the crystal of this compound.

| S-EPMC3344650 | biostudies-literature

1,1'-Bicyclo-hexyl-1,1'-diyl 1,1'-biphenyl-2,2'-dicarboxyl-ate.

Project description:The title compound, C(26)H(28)O(4), lies about a crystallographic twofold rotation axis. The cyclo-hexane rings adopt a chair conformation. The two benzene rings form a dihedral angle of 40.82?(3)°. No significant intra- or inter-molecular inter-actions are observed in the crystal structure.

| S-EPMC3379232 | biostudies-literature

1-(2-Bromophenyl)ethane-1,2-diyl 1,1'-biphenyl-2,2'-dicarboxylate.

Project description:In the title compound, C(22)H(15)BrO(4), the bromo-benzene ring is inclined at dihedral angles of 23.87?(11) and 52.37?(11)° with respect to the planes of the two benzene rings. The two benzene rings of the biphenyl unit form a dihedral angle of 49.08?(11)°. In the crystal, mol-ecules are linked into [100] chains by C-H?O hydrogen bonds.

| S-EPMC3344651 | biostudies-literature

Dimethyl 2,2'-[(4-oxo-2-phenyl-4H-chromene-5,7-diyl)dioxy]diacetate: a more densely packed polymorph.

Project description:The title mol-ecule, C(21)H(18)O(8), crystallizes in two crystal polymorphs, see also Nallasivam, Nethaji, Vembu & Jaswant [Acta Cryst. (2009), E65, o314-o315]. The mol-ecules of both polymorphs differ by the conformation of the oxomethyl-acetate groups. The title mol-ecules are rather planar compared to the mol-ecules of the other polymorph. In the title mol-ecule, one of the oxomethyl-acetate groups is disordered (occupancies of 0.6058/0.3942). The structures of both polymorphs are stabilized by C-H?O and C-H?? inter-actions. Due to the planarity of the title mol-ecules and similar inter-molecular inter-actions, the title mol-ecules are more densely packed than those of the other polymorph.

| S-EPMC2968396 | biostudies-literature

1-(4-Meth-oxy-phen-yl)ethane-1,2-diyl 1,1'-biphenyl-2,2'-dicarboxyl-ate.

Project description:In the title mol-ecule, C(23)H(18)O(5), the meth-oxy-substituted benzene ring makes dihedral angles of 65.12?(4) and 88.55?(4)° with the other two benzene rings. These two benzene rings form a dihedral angle of 45.70?(4)°. In the crystal, mol-ecules are linked into inversion dimers by pairs of weak C-H?O hydrogen bonds.

| S-EPMC3379233 | biostudies-literature

1,1'-Bicyclo-propyl-1,1'-diyl 1,1'-biphenyl-2,2'-dicarboxyl-ate.

Project description:In the title compound, C(20)H(16)O(4), the two benzene rings form a dihedral angle of 45.70?(4)°. In the crystal, mol-ecules are linked via C-H?O inter-actions into layers lying parallel to the bc plane.

| S-EPMC3379235 | biostudies-other

1-Benzyl-2,5-dioxopyrrolidine-3,4-diyl diacetate.

Project description:The pyrrolidine-2,5-dione ring in the title compound, C(15)H(15)NO(6), is in a twisted conformation with the acetyl C atoms projecting to opposite sides of the ring. The acetyl groups lie to opposite sides of the five-membered ring. The benzene ring is roughly perpendicular to the heterocyclic ring, forming a dihedral angle of 76.57?(14)° with it. In the crystal, mol-ecules are connected through a network of C-H?O and C-H?? inter-actions.

| S-EPMC3011662 | biostudies-literature

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