Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

2-Phenyl-5,7-bis-(prop-2-en-1-yl-oxy)-4H-chromen-4-one.

ABSTRACT: In the title compound, C(21)H(18)O(4), tthe dihedral angle between the chromene ring system and the pendant phenyl ring is 6.1?(1)°. The crystal structure is stabilized by an intermolecular C-H?O and C-H?? inter-actions.

SUBMITTER: Nallasivam A

PROVIDER: S-EPMC2967853 | biostudies-other | 2008

REPOSITORIES: biostudies-other

ACCESS DATA

Json Xml

Publications

2-Phenyl-5,7-bis-(prop-2-en-1-yl-oxy)-4H-chromen-4-one.

Nallasivam Angannan A Nethaji Munirathinam M Vembu Nagarajan N Ragunathan Venkatraman V Sulochana Nagarajan N

Acta crystallographica. Section E, Structure reports online 20081203 Pt 1

In the title compound, C(21)H(18)O(4), tthe dihedral angle between the chromene ring system and the pendant phenyl ring is 6.1 (1)°. The crystal structure is stabilized by an intermolecular C-H⋯O and C-H⋯π inter-actions. ...[more]

PMID: 21581562

Similar Datasets

5,7-Dimeth-oxy-2-phenyl-4H-chromen-4-one.

Project description:The asymmetric unit of the title compound, C(17)H(14)O(4), contains two independent mol-ecules which differ in the relative orientations of the phenyl rings with repect to the essentially planar [maximum deviations of 0.029?(2) and 0.050?(2)?Å in the two mol-ecules] chromene fused-ring system, forming dihedral angles of 10.3?(5) and 30.86?(5)° in the two mol-ecules. The crystal structure is stabilized by weak C-H?O and C--H?? inter-actions, and ?-? stacking inter-actions.

| S-EPMC2968465 | biostudies-literature

5,7-Bis(benz-yloxy)-2-phenyl-4H-chromen-4-one.

Project description:In the title compound, C(29)H(22)O(4), the chromene ring is almost planar with a small puckering [0.143 (2) Å]. The crystal structure is stabilized by C-H⋯O and C-H⋯π inter-actions. Edge-to-face (centroid-centroid distances of 3.894 and 3.673 Å) and face-to-face (centroid-centroid distance of 3.460 Å) π-π-ring electron inter-actions are also observed.

| S-EPMC2959925 | biostudies-literature

2-(5,7-Dimeth-oxy-4-oxo-4H-chromen-2-yl)phenyl 4-toluene-sulfonate.

Project description:In the crystal structure of the title compound, C(24)H(20)O(7)S, the chromone system makes a dihedral angle of 37.32 (7)° with the adjacent benzene ring. The chromone ring system and the tolyl ring are almost parallel, with a dihedral angle of 4.56 (9)°. The tolyl ring is twisted at an angle of 41.75 (6)° with respect to the benzene ring. Weak intra- and inter-molecular C-H⋯O inter-actions are observed.

| S-EPMC2962194 | biostudies-literature

5,7-Bis(benz-yloxy)-2-[4-(benz-yloxy)phen-yl]-4H-chromen-4-one.

Project description:In the title compound, C(36)H(28)O(5), the terminal benzene rings are twisted at dihedral angles of 6.75?(12), 70.86?(14) and 82.02?(12)° with the respect to the central plana r[maximum deviation = 0.070?(3)?Å] chromen-4-one ring system. In the crystal structure, ?-? stacking is observed between parallel benzene rings of adjacent mol-ecules [centroid-centroid distance = 3.7459?(16)?Å].

| S-EPMC2980130 | biostudies-literature

2-(4-Methyl-phen-yl)-7-(2-methyl-prop-oxy)-4H-chromen-4-one-6-chloro-2-(4-methyl-phen-yl)-7-(2-methyl-prop-oxy)-4H-chromen-4-one (19/1).

Project description:The title co-crystal, 0.95C(20)H(20)O(3)·0.05C(20)H(19)ClO(3), arises as the chloride carried over during the synthesis shares a position with an aromatic H atom; the partial occupancies are 0.947 (2) and 0.053 (2) for H and Cl, respectively. The mol-ecular structure is stabilized by intra-molecular C-H⋯O contacts, forming pseudo five- and six-membered rings with S(5) and S(6) graph-set motifs, respectively. The crystal structure features π-π stacking inter-actions between the centroids of the central fused ring systems [centroid-centroid distance = 3.501 (2) Å].

| S-EPMC3415021 | biostudies-literature

5,7-Dihy-droxy-2-(3-hy-droxy-4,5-dimeth-oxy-phen-yl)-6-meth-oxy-4H-chromen-4-one.

Project description:The title compound, C18H16O8, was isolated from the plant Artemisia baldshuanica Krasch et Zarp. The mol-ecule is approximately planar, with the exception of the terminal methyl groups, the C atoms of which devitate from their attached ring planes by 1.243 (5) and 1.168 (5) Å. The dihedral angle between the substituted benzopyran and benzene rings is 5.8 (1)°; this near planarity could be due to conjugation or a packing effect. Intra-molecular O-H⋯O and C-H⋯O hydrogen bonds occur. In the crystal, mol-ecules are connected by O-H⋯O hydrogen bonds involving the hy-droxy and carbonyl groups, forming hydrogen-bonded chains along [001] and [1-10]. The chains are linked by C-H⋯O inter-actions.

| S-EPMC3629625 | biostudies-literature

(E)-1-[2-Hy-droxy-4,6-bis-(meth-oxy-meth-oxy)phen-yl]-3-phenyl-prop-2-en-1-one.

Project description:The title compound, C19H20O6, consists of a tetra-substituted benzene ring with one substituent being an ?,?-unsaturated cinnamoyl group, which forms an extended conjugated system in the mol-ecule. In addition, two meth-oxy-meth-oxy and one hy-droxy group are bonded to the central benzene ring. The dihedral angle between eh rings is 10.22?(10)°. An intra-molecular hydrogen bond is observed between the hy-droxy group and the carbonyl O atom. One of the meth-oxy-meth-oxy substituents is conformationally disordered over two sets of sites with site-occupation factors of 0.831?(3) and 0.169?(3).

| S-EPMC3648248 | biostudies-literature

8-Hydr-oxy-5,6,7-trimeth-oxy-2-phenyl-4H-chromen-4-one.

Project description:In the title compound, C(18)H(16)O(6), the benzopyran group is essentially planar, with the O atoms of the substituent groups lying close to its mean plane. The mol-ecular conformation is governed by intra-molecular inter-actions. The crystal packing is mainly determined by one classical inter-molecular hydrogen bond which gives rise to the formation of an infinite chain along the a axis.

| S-EPMC2961207 | biostudies-literature

7-Fluoro-2-(prop-2-en-1-ylsulfan-yl)-3-(1H-1,2,4-triazol-1-yl)-4H-thio-chromen-4-one.

Project description:The asymmetric unit of the title compound, C(14)H(10)FN(3)OS(2), contains two independent mol-ecules which differ in the relative orientations of the triazole and allyl-sulfanyl groups with respect to the planar thio-chromen-4-one frameworks. The N-N-C-C torsion angles are 128.2?(5) and -120.9?(5)°, while the C-S-C-S torsion angles are -17.4?(4) and 16.4?(4)°. In the crystal, inter-molecular C-H?O and C-H?N hydrogen bonds link the mol-ecules in a stacked arrangement along the a axis.

| S-EPMC3151981 | biostudies-literature

1-(Adamantan-1-yl)-3-(4-meth-oxy-phenyl)prop-2-en-1-one.

Project description:The title mol-ecule, C(20)H(24)O(2), is a chalconoid derivative in which the keto-enone group is slightly distorted from planarity; the O=C-C=C torsion angle is 12.24 (13)°.

| S-EPMC3414983 | 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