[PDF] Top 20 Weak interactions in the crystal structures of two indole derivatives
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Weak interactions in the crystal structures of two indole derivatives
... (6.0 ml) at 273 K and stirred for 10 min. Separately, a solution of iodine (1.710 g, 6.74 mmol) in dry DMF (6.75 ml) was prepared. The two liquids were combined and stirred over ice for 90 min. Pouring the ... See full document
12
Different packing motifs mediated by weak interactions and polymorphism in the crystal structures of five 2 (benzylidene)benzosuberone derivatives
... respectively. Weak C—H interactions consolidate the structures and weak aromatic – stacking is seen in (II) [centroid–centroid separation = ... See full document
28
Different N—H⋯π interactions in two indole derivatives
... classical’ weak bond (Desiraju & Steiner, ...secondary structures (Lavanya et ...in indole complexes with aromatic species has been investigated by IR spectroscopy (Mun˜oz et ...many ... See full document
19
Crystal structures of two bis(iodomethyl)benzene derivatives: similarities and differences in the crystal packing
... the crystal of (I), weak parallel slipped – stacking interactions [inter-centroid distance = ..., inter- planar distance = ...forming weak C2—H2 I1 and C11—H112 I1 hydrogen bonds ... See full document
10
Crystal structures of two 1,3 thiazolidin 4 one derivatives featuring sulfide and sulfone functional groups
... both structures exhibit envelope puckering with the S atom as flap and the cyclohexyl rings are in their expected chair ...The two structures superpose fairly well, except for the orientation of the ... See full document
15
Crystal structures of three bicyclic carbohydrate derivatives
... The crystal packing of (I) features weak non-classical C— H O hydrogen bonds, which are illustrated in ...Between two infinite chains of A molecules (above and below in in ...by two further ... See full document
27
Crystal structures and Hirshfeld surfaces of two 1,3 benzoxathiol 2 one derivatives
... some inter- esting differences arise (Table 3): as a percentage of surface interactions, H H contacts ...three structures, and in (II) they actually contribute a higher percentage to the surface than in ... See full document
11
Crystal structures of four indole derivatives with a phenyl substituent at the 2 position and a carbonyl group at the 3 position: the C(6) N—H⋯O chain remains the same, but the weak reinforcing interactions are different
... Indole derivatives are widely studied due to their utility in many areas, including in the dye, plastics, agriculture and perfumery fields and as vitamin supplements and flavour enhancers (Barden, ... See full document
28
Crystal structures of two thiazolidinone derivatives bearing a trichloromethyl substituent at the 2 position
... strong. Weak C—H interactions between the tetrahedral, non-chiral carbon atom (C3) of the thiazolidinone ring and the phenyl ring of the symmetry-related enantiomer are also observed in both structures ... See full document
11
Crystal structures, DFT studies and UV–visible absorption spectra of two anthracenyl chalcone derivatives
... extended structures, weak N—H O, C—H O and C—H interactions influence the centrosymmetric crystal ...calculated structures are in good agreement with the crystal ... See full document
17
Crystal Structures of Two Immune Complexes Identify Determinants for Viral Infectivity and Type Specific Neutralization of Human Papillomavirus
... resolution structures, we have better defined the type-specific epitopes of two different HPV-neutralizing antibodies and shown that these antibodies recognize only 6 or 7 discontinuous amino acid residues in ... See full document
19
MICROWAVE ASSISTED SYNTHESIS OF INDOLE BASED 4 DIMETHYLAMINO PHENYL N METHYL/PHENYL PYRAZOLIDINE PYRAZOLE DERIVATIVES AND STUDY OF THEIR ANTIINFLAMMATORY ACTIVITY
... In the present investigation, the microwave assisted synthesis of substituted indole based pyrazole rings has been reported and their anti-inflammatory activity was evaluated. Chalcones (3a-b) were synthesized by ... See full document
10
Crystal structures of three 3,4,5 trimethoxybenzamide based derivatives
... The title benzoic derivatives were obtained in moderate-to- high yields via the synthetic strategy described in the Scheme below. Compound 1 was obtained from 3,4,5-trimethoxy- benzoic acid by an amidation ... See full document
24
INDOLE DERIVATIVES WITH ANTICONVULSANT ACTIVITY AGAINST TWO SEIZURE MODELS
... NMR spectra were recorded on Varian E-360 MHz or Bruker spectropsin DPX-300MHz with tetramethylsilane (TMS) as an internal standard. The splitting pattern abbreviations are as follows: s, singlet; br, broad signal; d, ... See full document
7
Crystal structures and conformational analyses of three pyranochromene derivatives
... Geometry . All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of ... See full document
23
Synthesis and crystal structures of a bis(3 hydroxy cyclohex 2 en 1 one) and two hexahydroquinoline derivatives
... Geometry . All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in ... See full document
26
Studies Directed Towards the Total Synthesis of (+)-Discodermolide
... diisopinocampheylborane 4 <\sup>roceeded smoothly to give the alcohol 16 with high enantiomeric purity with an yield of 96%. The alcohol 16 was converted to the lactone 18 by a two step sequence, PCC ... See full document
6
Crystal structures of three ortho substituted N acylhydrazone derivatives
... A mixture of L3 (0.01 mol) and 2-nitrobenzaldehyde (0.01 mol) in anhydrous methanol (30 ml) and two drops of glacial acetic acid was refluxed for 8 h. After cooling, the precipitate was collected by vacuum ... See full document
20
Crystal structures of two triazola dioxola benzenacyclononaphanes
... Geometry . All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in ... See full document
19
Crystal structures of two (±) exo N isobornylacetamides
... Geometry . All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in ... See full document
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