Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Crystal structure of 2-(thio-phen-3-yl)ethyl pyrene-1-carboxyl-ate.

ABSTRACT: In the title compound, C23H16O2S, the thio-phene group is rotationally disordered into two fractions almost parallel to each other, with occupation factors of 0.523?(7) and 0.477?(7), and subtending dihedral angles of 10.5?(5) and 9.3?(5)°, respectively, to the thio-phene group. The mol-ecules are held together by weak C-H?O and C-H?? hydrogen bonds, producing a laminar arrangement, which are further connected in a perpendicular fashion by S?? contacts [S?centroid = 3.539?(8) and 3.497?(8)?Å]. In spite of the presence of the entended pyrene group, the structure does not present any parallel ?-? stacking inter-actions. The structure was refined as an inversion twin.

SUBMITTER: Valderrama-Garcia BX

PROVIDER: S-EPMC4719884 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Similar Datasets

Crystal structure of ethyl 2-(3,5-di-fluoro-phen-yl)quinoline-4-carboxyl-ate.

Project description:In the title compound, C18H13F2NO2, the two rings of the quinoline system are fused almost coaxially, with a dihedral angle between their planes of 2.28?(8)°. The plane of the attached benzene ring is inclined to the plane of the quinoline system by 7.65?(7)°. The carboxyl-ate group attached to the quinoline system is in an anti-periplanar conformation. There is a short intra-molecular C-H?O contact involving the carbonyl group. In the crystal, mol-ecules are linked via C-H?O hydrogen bonds, forming chains lying in the (1-10) plane.

| S-EPMC4420057 | biostudies-literature

Crystal structure of ethyl 6-methyl-2-sulfanyl-idene-4-(thio-phen-2-yl)-1,2,3,4-tetra-hydro-pyrimidine-5-carboxyl-ate.

Project description:In the title compound, C12H14N2O2S2, the di-hydro-pyrimidine ring adopts a sofa conformation, with the C atom bearing the thienyl ring lying above the plane of the five remaining approximately coplanar (r.m.s. deviation = 0.0405?Å) atoms of the ring. The dihedral angle between the five near coplanar atoms of the ring and the thienyl ring is 89.78?(11)°. In the crystal, mol-ecules are linked into a supra-molecular chain along [100] via N-H?O(carbon-yl) hydrogen bonds. Inversion-related chains are linked into double chains via N-H?S(thione) hydrogen bonds. The three-dimensional architecture also features meth-yl-thienyl C-H?? inter-actions.

| S-EPMC4384618 | biostudies-literature

Crystal structure of ethyl 2-(2,4,5-tri-meth-oxy-phen-yl)quinoline-4-carboxyl-ate.

Project description:In the title compound, C21H21NO5, the dihedral angle between the quinoline ring system (r.m.s. deviation = 0.028 Å) and the tri-meth-oxy-benzene ring is 43.38 (5)°. The C atoms of the meth-oxy groups deviate from their attached benzene ring by -0.396 (2), -0.049 (2) and 0.192 (2) Å for the ortho-, meta- and para-substituents, respectively. The pendant ethyl chain is disordered over two orientations in a 0.527 (5):0.473 (5) ratio. A short intra-molecular C-H⋯O contact closes an S(6) ring. In the crystal, inversion dimers linked by pairs of weak C-H⋯O inter-actions generate R 2 (2)(6) loops. The dimers are linked by further C-H⋯O inter-actions to generate [1-10] chains.

| S-EPMC4518944 | biostudies-literature

Crystal structure of ethyl 2-acetyl-3,7-dimethyl-5-(thio-phen-2-yl)-5H-thia-zolo[3,2-a]pyrimidine-6-carboxyl-ate.

Project description:In the title compound, C17H18N2O3S2, the pyrimidine ring adopts a shallow sofa conformation, with the C atom bearing the axially-oriented thio-phene ring as the flap [deviation = 0.439 (3) Å]. The plane of the thio-phene ring lies almost normal to the pyrimidine ring, making a dihedral angle of 79.36 (19)°. In the crystal, pairs of very weak C-H⋯O hydrogen bonds link the mol-ecules related by twofold rotation axes, forming R 2 (2)(18) rings, which are in turn linked by another C-H⋯O inter-action, forming chains of rings along [010]. In addition, weak C-H⋯π(thio-phene) inter-actions link the chains into layers parallel to [001] and π-π inter-actions with a centroid-centroid distance of 3.772 (10) Å connect these layers into a three-dimensional network.

| S-EPMC4518970 | biostudies-literature

Crystal structure of diethyl 2-amino-6-[(thio-phen-3-yl)ethyn-yl]azulene-1,3-di-carboxyl-ate.

Project description:The title compound, C22H19NO4S, has an almost planar geometry supported by intra-molecular N-H⋯O and C-H⋯O hydrogen bonds. The thio-phene ring is inclined to the azulene ring by 4.85 (16)°, while the eth-oxy-carbonyl groups are inclined to the azulene ring by 7.0 (2) and 5.7 (2)°. In the crystal, mol-ecules are linked by pairs of N-H⋯O hydrogen bonds, forming inversion dimers with an R 2 (2)(12) ring motif. The dimers are linked via C-H⋯π inter-actions, forming sheets parallel to (10-1).

| S-EPMC4350707 | biostudies-literature

Crystal structures of ethyl 6-(4-methyl-phen-yl)-4-oxo-4H-chromene-2-carboxyl-ate and ethyl 6-(4-fluoro-phen-yl)-4-oxo-4H-chromene-2-carboxyl-ate.

Project description:The crystal structures of two chromone derivatives, viz. ethyl 6-(4-methyl-phen-yl)-4-oxo-4H-chromene-2-carboxyl-ate, C19H16O4, (1), and ethyl 6-(4-fluoro-phen-yl)-4-oxo-4H-chromene-2-carboxyl-ate C18H13FO4, (2), have been determined: (1) crystallizes with two mol-ecules in the asymmetric unit. A comparison of the dihedral angles beween the mean planes of the central chromone core with those of the substituents, an ethyl ester moiety at the 2-position and a para-substituted phenyl ring at the 6-position shows that each mol-ecule differs significantly from the others, even the two independent mol-ecules (a and b) of (1). In all three mol-ecules, the carbonyl groups of the chromone and the carboxyl-ate are trans-related. The supra-molecular structure of (1) involves only weak C-H?? inter-actions between H atoms of the substituent phenyl group and the phenyl group, which link mol-ecules into a chain of alternating mol-ecules a and b, and weak ?-? stacking inter-actions between the chromone units. The packing in (2) involves C-H?O inter-actions, which form a network of two inter-secting ladders involving the carbonyl atom of the carboxyl-ate group as the acceptor for H atoms at the 7-position of the chromone ring and from an ortho-H atom of the exocyclic benzene ring. The carbonyl atom of the chromone acts as an acceptor from a meta-H atom of the exocyclic benzene ring. ?-? inter-actions stack the mol-ecules by unit translation along the a axis.

| S-EPMC4704759 | biostudies-literature

Ethyl 5-(4-amino-phen-yl)isoxazole-3-carboxyl-ate.

Project description:The asymmetric unit of the title compound, C(12)H(12)N(2)O(3), contains two mol-ecules in which the benzene and isoxazole rings are almost coplanar, the dihedral angles between their mean planes being 1.76?(9) and 5.85?(8)°. The two mol-ecules inter-act with each other via N-H?N and N-H?O hydrogen bonds, which link the mol-ecules into layers parallel to the ac plane. The layers stack in a parallel mode with an inter-layer distance of 3.36?(7)?Å.

| S-EPMC3344059 | biostudies-literature

Crystal structure of ethyl 3-(4-chloro-phen-yl)-5-[(E)-2-(di-methyl-amino)-ethen-yl]-1,2-oxazole-4-carboxyl-ate.

Project description:In the title compound, C16H17ClN2O3, two mol-ecules, A and B, with different conformations, comprise the asymmetric unit. In mol-ecule A, the C=O group of the ester points away from the benzene ring [C-C-C=O = -170.8?(3)°], whereas in mol-ecule B, it points back towards the benzene ring [C-C-C=O = 17.9?(4)°]. The dihedral angles betweeen the oxazole and benzene rings also differ somewhat [46.26?(13) for mol-ecule A and 41.59?(13) for mol-ecule B]. Each mol-ecule features an intra-molecular C-H?O inter-action, which closes an S(6) ring. In the crystal, the B mol-ecules are linked into [001] C(12) chains by weak C-H?Cl inter-actions.

| S-EPMC4719961 | biostudies-literature

Crystal structure of ethyl 6-(chloro-meth-yl)-4-(4-chloro-phen-yl)-2-oxo-1,2,3,4-tetra-hydro-pyrimidine-5-carboxyl-ate.

Project description:In the title compound, C14H14Cl2N2O3, the chloro-phenyl ring makes a dihedral angle of 87.08?(9)° with the tetra-hydro-pyrimidine ring. There is a short intra-molecular C-H?O contact present. In the crystal, mol-ecules are linked via pairs of N-H?O hydrogen bonds, forming inversion dimers with an R (2) 2(8) ring motif. The dimers are linked via a second pair of N-H?O hydrogen bonds, this time enclosing an R (4) 4(20) ring motif, forming ribbons along [100]. The ribbons are linked via C-H?O hydrogen bonds, forming sheets lying parallel to (001). The terminal ethyl group is disordered over two positions with an occupancy ratio of 0.654?(17):0.346?(17).

| S-EPMC4257316 | biostudies-literature

Crystal structure of 4-methyl-benzyl N'-[(thio-phen-2-yl)methyl-idene]hydrazinecarbodi-thio-ate.

Project description:In the title compound, C15H16N2S3 {systematic name: [({[(4-methyl-phen-yl)meth-yl]sulfan-yl}methane-thio-yl)amino][1-(thio-phen-2-yl)ethyl-idene]amine}, the central CN2S2 residue is almost planar (r.m.s. deviation = 0.0061 Å) and forms dihedral angles of 7.39 (10) and 64.91 (5)° with the thienyl and p-tolyl rings, respectively; the dihedral angle between these rings is 57.52 (6)°. The non-thione S atoms are syn, and with respect to the thione S atom, the benzyl group is anti. In the crystal, centrosymmetrically related mol-ecules self-associate via eight-membered {⋯HNCS}2 synthons. The dimeric aggregates stack along the a axis and are are consolidated into a three-dimensional architecture via methyl-C-H⋯π(benzene) and benzene-C-H⋯π(thien-yl) inter-actions.

| S-EPMC4518925 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data