scholarly journals Pyrrolidin-1-ium 2-(naphthalen-1-yl)acetate–2-(naphthalen-1-yl)acetic acid (1/1)

2012 ◽  
Vol 68 (4) ◽  
pp. o1113-o1113
Author(s):  
Zhao Hong ◽  
Fu-Jun Yin ◽  
Xing-You Xu ◽  
Li-Jun Han ◽  
Li Ren
Keyword(s):  
Crystal Structure ◽  
Acetic Acid ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Naphthalene Ring ◽  
Pyrrolidine Ring ◽  
Ring Systems ◽  
Envelope Conformation ◽  
Compound C

In the title compound, C4H10N+·C12H9O2−·C12H10O2, the pyrrolidine ring adopts an envelope conformation and the dihedral angle between the planes of the two naphthalene ring systems is 8.34 (10)°. The crystal structure is stabilized by O—H...O and N—H...O hydrogen bonds.

scholarly journals Crystal structure of ethyl 1′,1′′-dimethyl-2′′,3-dioxo-3H-dispiro[benzo[b]thiophene-2,3′-pyrrolidine-2′,3′′-indoline]-4′-carboxylate

2015 ◽  
Vol 71 (3) ◽  
pp. o142-o142
Author(s):  
M. P. Savithri ◽  
M. Suresh ◽  
R. Raghunathan ◽  
R. Raja ◽  
A. SubbiahPandi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Ring System ◽  
Pyrrolidine Ring ◽  
Ring Systems ◽  
Envelope Conformation ◽  
Compound C ◽  
The Mean

In the title compound, C23H22N2O4S, the pyrrolidine ring has an envelope conformation with the spiro C atom, shared with the indoline ring system, as the flap. The mean planes of the benzothiophene and indoline ring systems are inclined to the mean plane of the pyrrolidine ring by 88.81 (8) and 79.48 (8)°, respectively, and to each other by 68.12 (5)°. In the crystal, molecules are linkedviaC—H...O hydrogen bonds, forming chains propagating along [001].

scholarly journals 1-Benzyl-3′-[(1H-indol-3-yl)carbonyl]-1′-methyl-2-oxo-4′-(pyridin-3-yl)spiro[indoline-3,2′-pyrrolidine]-3′-carbonitrile

IUCrData ◽  
2016 ◽  
Vol 1 (11) ◽  
Author(s):  
P. Seethalakshmi ◽  
C. Palanivel
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Pyrrolidine Ring ◽  
Ring Systems ◽  
Envelope Conformation ◽  
Compound C ◽  
The Mean

In the title compound, C34H27N5O2, the central pyrrolidine ring adopts an envelope conformation, with the N atom as the flap. The mean planes of the two indoline ring systems are inclined to the mean plane of the central pyrrolidine ring by 86.26 (9) and 69.30 (9)°, respectively. The dihedral angle between the benzene and pyridine rings is 75.09 (11)°. In the crystal, molecules are linked by N—H...N and C—H...N hydrogen bonds, forming sheets parallel to theabplane.

scholarly journals Crystal structure of (E)-2-(4-methoxystyryl)-2,3-dihydro-1H-perimidine acetonitrile monosolvate

2014 ◽  
Vol 70 (9) ◽  
pp. o959-o959 ◽  
Author(s):  
A. Manimekalai ◽  
N. Vijayalakshmi ◽  
S. Selvanayagam
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Solvent Molecule ◽  
Ring System ◽  
Naphthalene Ring ◽  
Envelope Conformation ◽  
Compound C

The title compound, C20H18N2O·CH3CN, a perimidine derivative, crystallized as an acetonitrile monosolvate. The planes of the naphthalene ring system and the methoxyphenyl ring are oriented almost perpendicular to one another, with a dihedral angle of 87.61 (6)°. The conformation about the C=C bond isE. The hexahydropyrimidine ring has an envelope conformation, with the methine C atom as the flap. In the crystal, the molecules are linked by N—H...N hydrogen bonds involving the acetonitrile solvent molecule as acceptor, forming zigzag chains propagating along [100].

scholarly journals Crystal structure of dimethyl 3,3′-[(4-fluorophenyl)methylene]bis(1H-indole-2-carboxylate)

2015 ◽  
Vol 71 (10) ◽  
pp. 1140-1142 ◽  
Author(s):  
Hong-Shun Sun ◽  
Yu-long Li ◽  
Hong Jiang ◽  
Ning Xu ◽  
Hong Xu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Indole Ring ◽  
Ring Systems ◽  
Π Interactions ◽  
Compound C ◽  
The Mean ◽  
Supramolecular Chains

In the title compound, C27H21FN2O4, the mean planes of the indole ring systems (r.m.s. deviations = 0.0263 and 0.0160 Å) are approximately perpendicular to one another, making a dihedral angle of 84.0 (5)°; the fluorobenzene ring is twisted with respect to the mean planes of the two indole ring systems at 89.5 (5) and 84.6 (3)°. In the crystal, pairs of N—H...O hydrogen bonds link the molecules into inversion dimers, which are further linked by N—H...O hydrogen bonds into supramolecular chains propagated along theb-axis direction. Weak C—H...π interactions are observed between neighbouring chains.

scholarly journals rac-Methyl (1R,3′S)-1′,1′′-dimethyl-2,2′′-dioxo-2H-dispiro[acenaphthylene-1,2′-pyrrolidine-3′,3′′-indoline]-4′-carboxylate

2013 ◽  
Vol 69 (2) ◽  
pp. o235-o235 ◽  
Author(s):  
G. Ganesh ◽  
Panneer Selvam Yuvaraj ◽  
Chinthalapuri Divakara ◽  
Boreddy S. R. Reddy ◽  
A. SubbiahPandi
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
The Other ◽  
Dihedral Angles ◽  
Indole Ring ◽  
Naphthalene Ring ◽  
Pyrrolidine Ring ◽  
Compound C

In the title compound, C26H22N2O4, the pyrrolidine ring adopts a twisted conformation and the other five-membered rings adopt envelope conformations with the spiro C atoms as the flap atoms. The naphthalene ring system of the dihydroacenaphthylene group forms dihedral angles of 89.2 (9) and 75.5 (6)° with the pyrrolidine and indole rings, respectively. The pyrrolidine ring makes a dihedral angle of 80.1 (9)° with the indole ring. In the crystal, molecules are linked by weak C—H...O hydrogen bonds, forming chains along theb-axis direction.

7,7a-Dihydroisoindolo[2,1-a]pyrimidin-12-one

2006 ◽  
Vol 62 (7) ◽  
pp. o2929-o2931
Author(s):  
Mustafa Odabaşoğlu ◽  
Orhan Büyükgüngör
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Naphthalene Ring ◽  
Π Interactions ◽  
Compound C

The crystal structure of the title compound, C18H12N2O, is stabilized by intermolecular N—H...O hydrogen bonds and C—H...π interactions. N—H...O hydrogen bonds generate a C(6) chain. The dihedral angle between the isoindoline group and the naphthalene ring system is 24.96 (12)°.

scholarly journals Crystal structure of 3-amino-1-(4-hydroxyphenyl)-1H-benzo[f]chromene-2-carbonitrile

2015 ◽  
Vol 71 (8) ◽  
pp. o536-o537
Author(s):  
Mehmet Akkurt ◽  
Peter N. Horton ◽  
Sabry H. H. Younes ◽  
Shaaban K. Mohamed ◽  
Mustafa R. Albayati
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring System ◽  
Boat Conformation ◽  
Naphthalene Ring ◽  
Pyran Ring ◽  
Compound C ◽  
The Mean

In the title compound, C20H14N2O2, the hydroxybenzene ring is almost perpendicular to the mean plane of the naphthalene ring system, making a dihedral angle of 85.56 (4)°. The 4H-pyran ring fused with the naphthalene ring system has a flattened boat conformation. In the crystal, O—H...N and N—H...O hydrogen bonds link the molecules into a supramolecular layer in thebcplane; N—H...π interactions also contribute to this arrangement. The layers are linked by weak by C—H...π and π–π [inter-centroid separation = 3.8713 (7) Å] interactions.

scholarly journals Crystal structure of 4-(4b,8a-dihydro-9H-pyrido[3,4-b]indol-1-yl)-7-methyl-2H-chromen-2-one

2017 ◽  
Vol 73 (1) ◽  
pp. 56-58 ◽  
Author(s):  
S. Samundeeswari ◽  
Manohar V. Kulkarni ◽  
G. N. Anil Kumar
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Ring Systems ◽  
Axis Direction ◽  
Π Interactions ◽  
Compound C ◽  
The Mean

The title compound, C21H14N2O2, was prepared by Pictet–Spengler cyclization of tryptamine and 4-formyl coumarin. In the molecule, the dihedral angle between the mean planes of the coumarin and β-carboline ring systems is 63.8 (2)°. In the crystal, molecules are linkedviaN—H...N hydrogen bonds, forming chains along theb-axis direction. Within the chains, there are a number of offset π–π interactions present [shortest intercentroid distance = 3.457 (2) Å].

scholarly journals Crystal structure of diethyl 3,3′-[(4-nitrophenyl)methylene]bis(1H-indole-2-carboxylate)

2017 ◽  
Vol 73 (12) ◽  
pp. 1956-1958
Author(s):  
Hong-Shun Sun ◽  
Yu-Long Li ◽  
Hong Jiang ◽  
Yu-Liang Chen ◽  
Ya-Di Hu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Title Compound ◽  
Indole Ring ◽  
Ring Systems ◽  
Compound C ◽  
The Mean ◽  
Supramolecular Chains

In the title compound, C29H25N3O6, the mean planes of the two indole ring systems (r.m.s. deviations = 0.0115 and 0.0082 Å) are approximately perpendicular to one another, making a dihedral angle of 89.7 (5)°; the benzene ring is twisted with respect to the two indole ring systems by 52.6 (4) and 88.2 (3)°. In the crystal, pairs of N—H...O hydrogen bonds link the molecules into the inversion dimers, which are further linked into supramolecular chains along theb-axis direction. Weak C—H...O hydrogen bonds and C—H...π interactions are also observed in the crystal.

2-(Pyrrolidin-1-ylmethyl)isoindoline-1,3-dione

2007 ◽  
Vol 63 (11) ◽  
pp. o4388-o4388 ◽  
Author(s):  
P. Sakthivel ◽  
P. S. Joseph ◽  
A. Sebastiyan ◽  
M. Yosuva Suvaikin ◽  
M. Ramesh
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Pyrrolidine Ring ◽  
Envelope Conformation ◽  
Compound C

In the title compound, C13H14N2O2, the pyrrolidine ring adopts an envelope conformation. The crystal structure is stabilized by C—H...O and C—H...N hydrogen bonds.

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