In the title compound, C(20)H(20)N(4)O(2), the piperidine ring adopts a distorted boat conformation. The two phenyl rings form dihedral angles of 82.87 (1) and 84.40 (1)° with respect to the piperidine ring. The crystal packing is stabilized by inter-molecular C-H⋯O and C-H⋯N inter-actions.

The host-guest interaction in high-silica ferrierite (FER) with different structure-directing agents (SDA), pyridine and piperidine, was analyzed by solid-state (29)Si NMR relaxation experiments and molecular-orbital calculations. Qualitative and quantitative knowledge of the SDA structure obtained by these methods provides significant insight for understanding the functions in a template, and ...

In the title compound, C(12)H(15)NO(2), the dihedral angle between the benzene ring and the basal plane of the piperidine ring (which is in a chair conformation) is 49.55 (8)°. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds and very weak C-H⋯π inter-actions.

It is suggested that piperidine may be useful in the identification of clay minerals during differential thermal analysis, particularly in the differentiation of expanding and non-expanding lattice minerals. Differential thermal analysis of two montmorillonites showing similar X-ray powder photographs indicated large differences in the distribution of cationexchange sites. INTRODUCTION Allaway ...

In the title compound, C(37)H(34)N(2)O(2), the pyridinone ring adopts a half-chair conformation. In the octa-hydro-indolizine fused-ring system, the piperidine ring is in a chair conformation and the pyrrole ring is twisted about the N-C(piperidine) bond. The mol-ecular structure features a weak intra-molecular C-H⋯O inter-action.

In the crystal structure of the title compound, C(26)H(32)ClNO(8), the piperidine ring is in a twist-chair conformation, with puckering parameters Q = 0.655 (4) Å, θ = 93.1 (1) and ϕ = 254.4 (3)°. The ortho C atoms of the piperidine ring deviate from the plane defined by the remaining ring atoms by 0.380 (3) and -0.250 (3) Å.

The structure of the racemic title compound, C(10)H(15)NO(4), consists of a tricyclic skeleton comprising a six-membered piperidine ring and five-membered isoxazolidine and tetra-hydro-furan rings. The piperidine ring adopts a distorted chair conformation, while the isoxazolidine and tetra-hydro-furan rings have envelope conformations.

Background and Objective: N-Methyl-D-aspartate (NMDA) antagonists such as piperidines are the most important antiepileptic drugs. Considering the fact that piperidine derivatives such as phencyclidine (PCP) and its new derivative, 1-[1-(3-methoxyphenyl) (tetralyl)] piperidine (PCP1), have different potencies, the antiepileptic effects of mentioned drugs were investigated in the present study. ...

In the title compound, C15H22N2O·H2O, the dihedral angle between the planes of the piperidine and benzene rings is 31.63 (1)°. The piperidine ring adopts a chair conformation. The water solvent mol-ecule is involved in inter-species O-H⋯O, O-H⋯N, N-H⋯O and weak C-H⋯O hydrogen-bonding inter-actions, giving rise to chains extending along [010].