Zobrazeno 1 - 10
of 421
pro vyhledávání: '"V. Thanikachalam"'
Publikováno v:
Chemical Physics Impact, Vol 8, Iss , Pp 100504- (2024)
In this paper, hybrid structure of piperidin—thiosemicarbazone with different substituents; R = −H, −F, −OCH3, −Cl, −NO2 (compounds 1–5) are reported. Structure of synthesized compounds 1–5 were elucidated using spectral characterizat
Externí odkaz:
https://doaj.org/article/596482a81e8a4eae9e19b9830d463193
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 10, Pp 199-202 (2014)
In the title compounds, C27H28N2O3, (I), and C28H30N2O3, (II), the conformation about the C=N bond is E. The piperidine rings adopt chair conformations with the attached phenyl rings almost normal to their mean planes, the dihedral angles being 85.82
Externí odkaz:
https://doaj.org/article/aad2537e8f26410eab5ec096d019bb44
Publikováno v:
Arabian Journal of Chemistry, Vol 9, Iss S1, Pp S570-S575 (2016)
Two chalcones namely, 1,5-bis(4-hydroxy-3-methoxyphenyl)pentan-1,4-dien-3-one (BHMPD) and 2,5-bis(4-hydroxy-3-methoxybenzylidene)cyclopentanone (BHMBC) have been synthesised and characterized by microanalysis, FT-IR, mass spectra and NMR (1H and 13C)
Externí odkaz:
https://doaj.org/article/46d1da55776841b38315a33279f52161
Publikováno v:
E-Journal of Chemistry, Vol 8, Iss 2, Pp 819-829 (2011)
The non-isothermal decomposition properties of 2-(2-hydroxy- benzylideneamino)-3-phenylpropanoic acid [HBAPPA] have been studied using microanalysis, FT-IR, UV, DTA, DTG and TG techniques. The TG studies were carried out at different heating rates of
Externí odkaz:
https://doaj.org/article/6287e80c95aa48fe99759cbc52fe3352
Autor:
T. Mohandas, K. Gokula Krishnan, S. Balamurugan, William T. A. Harrison, V. Thanikachalam, P. Sakthivel
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 71, Iss 8, Pp o542-o543 (2015)
The title compound, C26H31N3O2S, crystallizes with two molecules (A and B) in the asymmetric unit. In each case, the piperidine ring exists in a twist-boat conformation. The dihedral angle between the phenyl rings is 46.16 (12)° in molecule A and 44
Externí odkaz:
https://doaj.org/article/101886a1fbbf4be5b4051bbc5084454f
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 8, Pp o883-o883 (2014)
In the title compound, C26H26N2O2, the piperidine ring exhibits a chair conformation. The phenyl rings are attached to the central heterocycle in an equatorial position. The dihedral angle between the planes of the phenyl rings is 57.58 (8)°. In the
Externí odkaz:
https://doaj.org/article/eebfac55aaa2418d8785985b8163ff76
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 6, Pp o713-o713 (2014)
The title piperidine derivative, C26H26N2O3, has an E conformation about the N=C bond. The piperidine ring has a chair conformation and its mean plane is almost perpendicular to the attached phenyl rings, making dihedral angles of 87.47 (9) and 87.34
Externí odkaz:
https://doaj.org/article/a0aa40d4048941c5adbd9e8227a15529
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 5, Pp o551-o551 (2014)
In the title compound, C27H29N3O2, the piperidine ring exists in a chair conformation with an equatorial orientation of the phenyl and methyl substituents. The C—C=N bond angles are significantly different [119.1 (2) and 127.2 (2)°]. The phenyl ri
Externí odkaz:
https://doaj.org/article/d07387044dc84ca29b2f3fefe4cce9c8
Publikováno v:
Acta Crystallographica Section E, Vol 69, Iss 10, Pp o1545-o1545 (2013)
In the title compound, C28H30N2O2, the piperidine ring exists in a chair conformation with an equatorial orientation of the phenyl rings and methyl group substituted on the heterocycle. In the crystal, C—H...π interactions result in chains of mole
Externí odkaz:
https://doaj.org/article/a18d9388bc914a44afefa5a78e1efe7e
Publikováno v:
Acta Crystallographica Section E, Vol 69, Iss 8, Pp o1276-o1276 (2013)
In the title compound, C29H32N2O2, the piperidine ring exists in a chair conformation (the bond-angle sum at the sp2-hybridized C atom is 359.79°). The phenyl rings and the methyl group substituted on the heterocyclic ring are in equatorial orientat
Externí odkaz:
https://doaj.org/article/2c9b749721314b20943f1e5cc1ba5b1b