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Crystal structures of (E)-(3-ethyl-1-methyl-2,6-di-phenyl-piperidin-4-yl-idene)amino phenyl carbonate and (E)-(3-isopropyl-1-methyl-2,6-di-phenyl-piperidin-4-yl-idene)amino phenyl carbonate.

Raghuvarman B, Sivakumar R, Thanikachalam V, Aravindhan S - Acta Crystallogr Sect E Struct Rep Online (2014)

Bottom Line: The phenyl rings are inclined to one another by 52.87 (8)° in (I) and by 60.51 (14)° in (II).The main difference in the conformation of the two compounds is the angle of inclination of the phen-oxy-carbonyl ring to the piperidine ring mean plane.In (I), these two planes are almost coplanar, with a dihedral angle of 2.05 (8)°, while in (II), this angle is 45.24 (13)°.

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Affiliation: Department of Physics, Presidency College (Autonomous), Chennai 600 005, India.

ABSTRACT
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 (8) and 85.84 (7)° in (I), and 87.98 (12) and 86.42 (13)° in (II). The phenyl rings are inclined to one another by 52.87 (8)° in (I) and by 60.51 (14)° in (II). The main difference in the conformation of the two compounds is the angle of inclination of the phen-oxy-carbonyl ring to the piperidine ring mean plane. In (I), these two planes are almost coplanar, with a dihedral angle of 2.05 (8)°, while in (II), this angle is 45.24 (13)°. In the crystal of (I), mol-ecules are linked by C-H⋯O hydrogen bonds, forming inversion dimers with R 2 (2)(14) loops. The dimers are linked via C-H⋯π inter-actions forming a three-dimensional network. In the crystal of (II), there are no significant inter-molecular inter-actions present.

No MeSH data available.


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A view along the a axis of the crystal packing of compound (II).
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fig4: A view along the a axis of the crystal packing of compound (II).

Mentions: In the crystal of (II), there are no significant inter­molecular inter­actions present. This is similar to the situation in the crystal of compound (III). The packing in (II) is illustrated in Fig. 4 ▶.


Crystal structures of (E)-(3-ethyl-1-methyl-2,6-di-phenyl-piperidin-4-yl-idene)amino phenyl carbonate and (E)-(3-isopropyl-1-methyl-2,6-di-phenyl-piperidin-4-yl-idene)amino phenyl carbonate.

Raghuvarman B, Sivakumar R, Thanikachalam V, Aravindhan S - Acta Crystallogr Sect E Struct Rep Online (2014)

A view along the a axis of the crystal packing of compound (II).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4257207&req=5

fig4: A view along the a axis of the crystal packing of compound (II).
Mentions: In the crystal of (II), there are no significant inter­molecular inter­actions present. This is similar to the situation in the crystal of compound (III). The packing in (II) is illustrated in Fig. 4 ▶.

Bottom Line: The phenyl rings are inclined to one another by 52.87 (8)° in (I) and by 60.51 (14)° in (II).The main difference in the conformation of the two compounds is the angle of inclination of the phen-oxy-carbonyl ring to the piperidine ring mean plane.In (I), these two planes are almost coplanar, with a dihedral angle of 2.05 (8)°, while in (II), this angle is 45.24 (13)°.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Physics, Presidency College (Autonomous), Chennai 600 005, India.

ABSTRACT
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 (8) and 85.84 (7)° in (I), and 87.98 (12) and 86.42 (13)° in (II). The phenyl rings are inclined to one another by 52.87 (8)° in (I) and by 60.51 (14)° in (II). The main difference in the conformation of the two compounds is the angle of inclination of the phen-oxy-carbonyl ring to the piperidine ring mean plane. In (I), these two planes are almost coplanar, with a dihedral angle of 2.05 (8)°, while in (II), this angle is 45.24 (13)°. In the crystal of (I), mol-ecules are linked by C-H⋯O hydrogen bonds, forming inversion dimers with R 2 (2)(14) loops. The dimers are linked via C-H⋯π inter-actions forming a three-dimensional network. In the crystal of (II), there are no significant inter-molecular inter-actions present.

No MeSH data available.


Related in: MedlinePlus