Search

Your search keyword '"Nayak, Prakash"' showing total 88 results
Start Over Author "Nayak, Prakash" Journal acta crystallographica section e structure reports online
88 results on '"Nayak, Prakash"'

24. 1-(3-Bromophenyl)thiourea

Author

Fun, Hoong-Kun, primary, Quah, Ching Kheng, additional, Nayak, Prakash S., additional, Narayana, B., additional, and Sarojini, B. K., additional

Published
2012
Full Text
View/download PDF

29. 1-(3-Chlorophenyl)thiourea

Author

Fun, Hoong-Kun, primary, Quah, Ching Kheng, additional, Nayak, Prakash S., additional, Narayana, B., additional, and Sarojini, B. K., additional

Published
2012
Full Text
View/download PDF

43. 4-[(4-Bromo-phenyl)amino]-2-methyl-idene-4-oxo-butanoic acid.

Author

Narayana B, Nayak PS, Sarojini BK, and Jasinski JP

Abstract

In the title compound, C11H10BrNO3, two independent mol-ecules (A and B) crystallize in the asymmetric unit. The dihedral angles between the mean planes of the 4-bromo-phenyl ring and amide group are 24.8 (7) in mol-ecule A and 77.1 (6)° in mol-ecule B. The mean plane of the methyl-idene group is further inclined by 75.6 (4) in mol-ecule A and 72.5 (6)° in mol-ecule B from that of the amide group. In the crystal, N-H⋯O hydrogen bonds formed by amide groups and O-H⋯O hydrogen bonds formed by carb-oxy-lic acid groups are observed and supported additionally by weak C-H⋯O inter-actions between the methyl-idene and amide groups. Together, these link the mol-ecules into chains of dimers along [110] and form R 2 (2)(8) graph-set motifs.

Published
2014
Full Text
View/download PDF

44. 4-[(4-Acetyl-phen-yl)amino]-2-methyl-idene-4-oxo-butanoic acid.

Author

Narayana B, Nayak PS, Sarojini BK, and Jasinski JP

Abstract

In the title compound, C13H13NO4, the N-C(=O) bond length of 1.354 (2) Å is indicative of amide-type resonance. The dihedral angle between the mean planes of the benzene ring and oxo-amine group is 36.4 (3)°, while the mean plane of the 2-methyl-idene group is inclined by 84.2 (01)° from that of the oxo-amine group. In the crystal, classical O-H⋯O hydrogen bonds formed by the carb-oxy-lic acid groups and weak N-H⋯O weak inter-actions formed by the amide groups and supported by weak C-H⋯O inter-actions between the 2-methyl-idene, phenyl and acetyl groups with the carb-oxy-lic acid, oxo-amine and acetyl O atoms, together link the mol-ecules into dimeric chains along [010]. The O-H⋯O hydrogen bonds form R 2 (2)(8) graph-set motifs.

Published
2014
Full Text
View/download PDF

45. 2-(2-Methyl-phen-yl)-N-(1,3-thia-zol-2-yl)acetamide.

Author

Narayana B, Nayak PS, Sarojini BK, and Jasinski JP

Abstract

In the title compound, C12H12N2OS, the dihedral angle between the benzene and thia-zole rings is 83.5 (7)°. The acetamide group is almost coplanar with the thia-zole ring, being twisted from it by 4.2 (9)°. In the crystal, pairs of N-H⋯N hydrogen bonds link mol-ecules into inversion dimers, generating R 2 (2)[8] loops; the dimers are stacked along [001].

Published
2014
Full Text
View/download PDF

46. 4-(3-Fluoro-4-methyl-anilino)-2-methyl-idene-4-oxo-butanoic acid.

Author

Nayak PS, Narayana B, Jasinski JP, Yathirajan HS, and Kaur M

Abstract

The title compound, C12H12FNO3, crystallizes with two independent mol-ecules (A and B) in the asymmetric unit. The dihedral angle between the mean planes of the 3-fluoro-4-methyl-phenyl ring and the oxo-amine group is 25.7 (7)° in mol-ecule A and 71.3 (7)° in mol-ecule B, while the mean plane of the 2-methyl-idene-4-oxo-butanoic acid group is twisted by 76.2 (1)° from that of the oxo-amine group in mol-ecule A and by 76.2 (4)° in mol-ecule B. In the crystal, N-H⋯O and O-H⋯O hydrogen bonds [the latter forming an R 2 (2)(8) graph-set motif] link the mol-ecules into a two-dimensional network parallel to the ac plane.

Published
2013
Full Text
View/download PDF

47. N-(1,3-Benzo-thia-zol-2-yl)acetamide.

Author

Nayak PS, Narayana B, Jasinski JP, Yathirajan HS, and Kaur M

Abstract

The title compound, C9H8N2OS, crystallizes with two mol-ecules (A and B) in the asymmetric unit. The dihedral angles between the mean planes of the 1,3-benzo-thia-zol-2-yl ring system and the acetamide group are 2.7 (4) (mol-ecule A) and 7.2 (2) Å (mol-ecule B). In the crystal, pairs of N-H⋯N hydrogen bonds link the A and B mol-ecules into dimers, generating R 2 (2)(8) loops. The dimers stack along [100].

Published
2013
Full Text
View/download PDF

48. 2-(4-Bromo-phen-yl)-N-(pyrazin-2-yl)acetamide.

Author

Nayak PS, Narayana B, Jasinski JP, Yathirajan HS, and Sarojini BK

Abstract

In the title compound, C12H10BrN3O, the dihedral angle between the mean planes of the 4-bromo-phenyl and pyrazin-2-yl rings is 54.6 (3)°. An intra-molecular C-H⋯O hydrogen bond generates an S(6) graph-set motif. In the crystal, weak N-H⋯N hydrogen bonds link the mol-ecules into chains along [100]. The chains are linked via C-H⋯N and C-H⋯O hydrogen bonds, forming two-dimensional networks lying parallel to the ab plane.

Published
2013
Full Text
View/download PDF

49. 2-(2,4-Di-chloro-phen-yl)-N-(1,3-thia-zol-2-yl)acetamide.

Author

Nayak PS, Narayana B, Yathirajan HS, Jasinski JP, and Butcher RJ

Abstract

In the title compound, C11H8Cl2N2OS, the mean plane of the di-chloro-phenyl ring is twisted by 72.4 (1)° from that of the thia-zole ring. In the crystal, mol-ecules are linked via pairs of N-H⋯N hydrogen bonds with an R 2 (2)(8) graph-set motif and weak C-H⋯O inter-actions, forming inversion dimers which stack along the c-axis direction.

Published
2013
Full Text
View/download PDF

50. 2-(3,4-Dichloro-phen-yl)-N-(1,3-thia-zol-2-yl)acetamide.

Author

Nayak PS, Narayana B, Yathirajan HS, Jasinski JP, and Butcher RJ

Abstract

In the title compound, C11H8Cl2N2OS, the mean plane of the dichloro-phenyl ring is twisted by 61.8 (1)° from that of the thia-zole ring. In the crystal, mol-ecules are linked via pairs of N-H⋯N hydrogen bonds with an R 2 (2)(8) graph-set motif, forming inversion dimers which stack along the a-axis direction.

Published
2013
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results