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Trimeth-yl(triphenyl-meth-oxy)silane.

ABSTRACT: In the title mol-ecule, C(22)H(24)OSi, the Si-O-C angle is 139.79?(11)°, the O-C-C angles of the triphenyl-meth-oxy group are in the range 106.13?(13)-109.22?(14)° and the O-Si-C angles of the trimethyl-sil-yloxy group are in the range 103.08?(10)-113.53?(10)°. In the crystal, face-to-face ?-? interactions are observed between the phenyl rings [centroid separation = 4.194?(1)?Å, interplanar spacing = 3.474?Å and centroid shift = 2.35?Å]. The three phenyl groups of the triphenyl-methyl substituent are mutually nearly perpendicular, with dihedral angles in the range 80.49?(8)-81.53?(8)°. There are only weak inter-molecular van der Waals inter-actions in the crystal.

SUBMITTER: Anthal S

PROVIDER: S-EPMC3275290 | biostudies-literature | 2012 Feb

REPOSITORIES: biostudies-literature

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Trimeth-yl(triphenyl-meth-oxy)silane.

Anthal Sumati S Banerjee Bubun B Brahmacharia Goutam G Kant Rajni R Gupta Vivek K VK

Acta crystallographica. Section E, Structure reports online 20120131 Pt 2

In the title mol-ecule, C(22)H(24)OSi, the Si-O-C angle is 139.79 (11)°, the O-C-C angles of the triphenyl-meth-oxy group are in the range 106.13 (13)-109.22 (14)° and the O-Si-C angles of the trimethyl-sil-yloxy group are in the range 103.08 (10)-113.53 (10)°. In the crystal, face-to-face π-π interactions are observed between the phenyl rings [centroid separation = 4.194 (1) Å, interplanar spacing = 3.474 Å and centroid shift = 2.35 Å]. The three phenyl groups of the triphenyl-methyl substituen ...[more]

PMID: 22347146

Similar Datasets

Crystal structure of trimeth-yl({tris-[(phenyl-sulfan-yl)meth-yl]sil-yl}meth-oxy)silane and Hirshfeld surface analysis of 3-bromo-2,2-bis-(bromo-meth-yl)propan-1-ol.

Project description:Trimeth-yl({tris-[(phenyl-sulfan-yl)meth-yl]sil-yl}meth-oxy)silane (3), C26H32OS3Si, is a new ligand for transition-metal coordination chemistry derived from 3-bromo-2,2-bis-(bromo-meth-yl)propan-1-ol (1), C5H9Br3O, through silylation and following exchange of bromine groups with NaSPh. Silylated thio-ether ligand 3 crystallizes in the centrosymmetric space group C2/c. Bromo-methyl-alcohol 1 crystallizes in the space group P in the triclinic crystal system with four mol-ecules in the asymmetric unit. Analysis of the Hirshfeld surface shows structure-defining inter-actions for bromo-methyl-alcohol 1, resulting in inter-molecular hydrogen bonds between the hydroxyl groups along the a-axis direction.

| S-EPMC10088301 | biostudies-literature

4-(3-Fluoro-4-meth-oxy-phen-yl)-1-(4-meth-oxy-phen-yl)-5-(3,4,5-trimeth-oxy-phen-yl)-1H-imidazole.

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(E)-1-(4-Meth-oxy-phen-yl)-3-(3,4,5-trimeth-oxy-phen-yl)prop-2-en-1-one.

Project description:The title compound, C(19)H(20)O(5), was synthesized by reaction of 4-meth-oxy-acetophenone and 3,4,5-trimeth-oxy-benzaldehyde. The aromatic rings form a dihedral angle of 36.39?(7)°. Two intramolecular C-H?O hydrogen bonds occur. The crystal packing features weak C-H?O inter-actions.

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(E)-1-(4-Meth-oxy-phen-yl)-3-(2,4,6-trimeth-oxy-phen-yl)prop-2-en-1-one.

Project description:In the title compound, C(19)H(20)O(5), the dihedral angle between the two aromatic rings is 18.23 (4)°. The crystal structure exhibits only weak C-H⋯π and C-H⋯O contacts between the mol-ecules.

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Ferrocen-yl(meth-yl)diphenyl-silane.

Project description:In the title mol-ecule, [Fe(C(5)H(5))(C(18)H(17)Si)], the distances of the Fe atom from the centroids of the unsubstituted and substituted cyclo-penta-dienyl (Cp) rings are 1.651?(1) and 1.646?(1)?Å, respectively. The dihedral angle between the two Cp rings is 3.20?(17)°. The crystal packing is mainly stabilized by van der Waals forces.

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1-Methyl-2-[(E)-2,4,5-trimeth-oxy-styr-yl]pyridinium 4-meth-oxy-benzene-sulfonate monohydrate.

Project description:In the title compound, C(17)H(20)NO(3) (+)·C(7)H(7)O(4)S(-)·H(2)O, the cation exists in an E configuration with respect to the C=C bond and is twisted with a dihedral angle of 17.81?(8)° between the pyridinium and benzene rings. The benzene ring of the anion is almost parallel to the pyridinium ring [dihedral angle = 3.45?(9)°], whereas it is inclined to the benzene ring of the cation [dihedral angle = 17.62?(8)°]. The crystal structure is stabilized by O-H?O hydrogen bonds and weak C-H?O inter-actions which link the cations, anions and water mol-ecules into chains along the a axis. ?-? inter-actions with centroid-centroid distances of 3.7751?(9) and 3.7920?(11)?Å are also observed.

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1,3,5-Tris(bromo-meth-yl)-2,4,6-trimeth-oxy-benzene.

Project description:There are three independent mol-ecules in the asymmetric unit of the title compound, C12H15Br3O3, two of which have approximate trigonal symmetry, the third being conformationally different as it adopts near mirror symmetry. The crystal structure features C-H?Br inter-actions, a weak C-H?O hydrogen bond, ?-? inter-actions [minimum ring centroid separation = 3.4927?(18)?Å] and a short Br?Br contact [3.5894?(5)?Å], resulting in a three-dimensional supramolecular network.

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3-{3,5-Bis[(2-but-oxy-eth-oxy)carbon-yl]-2,6-dimethyl-1,4-dihydro-pyridin-4-yl}-1-[(3,4,5-trimeth-oxy-benzo-yl)meth-yl]pyridinium bromide.

Project description:In the title salt, C37H51N2O10(+)·Br(-), the 1,4-dihydro-pyridine (1,4-DHP) ring adopts a slighly puckered boat conformation. The N and opposite C atoms deviate from the least-squares plane calculated through the four other ring atoms by 0.068?(5) and 0.224?(5)?Å, respectively. The orientation of both C=O groups is similar (cis with respect to the double bonds of 1,4-DHP. The pyridinium ring has an axial orientation with respect to the1,4-DHP ring and is almost perpendicular to the least-squares plane of the 1,4-DHP ring, making a dihedral angle of 89.2?(3)°. The mol-ecule has a compact shape due to the parallel orientation of the long-chain substituents. One of the but-oxy groups was fond to be disordered (occupancy ratio 0.70:0.30). In the crystal, the bromide anion accepts a weak hydrogen bond from the N-H group of a neighboring 1,4-DHP ring.

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(E)-4-Meth-oxy-N'-(3,4,5-trimeth-oxy-benzyl-idene)benzohydrazide.

Project description:In the asymmetric unit of the title compound, C(18)H(20)N(2)O(5), there are two crystallographic independent mol-ecules. Both mol-ecules are twisted; the dihedral angle between the two benzene rings is 7.2?(5)° in one mol-ecule, whereas it is 85.9?(4)° in the other. Of the three meth-oxy groups in the 3,4,5-trimeth-oxy-phenyl unit, two meth-oxy groups at meta positions are approximately coplanar with the benzene plane [C-O-C-C torsion angles of -2.3?(13)-4.8?(11)°], but the other meth-oxy, at the para position, is out of the plane [C-O-C-C of 72.8?(9)° in one mol-ecule and -77.5?(9)° in the other]. In the crystal, mol-ecules are linked by N-H?O hydrogen bonds and weak C-H?O inter-actions into tapes along the b axis. C-H?? inter-actions are also present.

| S-EPMC3297292 | biostudies-literature

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