Thanikasalam Kanagasabapathy, Jeyaraman Ramasubbu, Panchanatheswaran Krishnaswamy, Low John N, Glidewell Christopher
School of Chemistry, Bharathidasan University, Tiruchirappalli, Tamil Nadu 620 024, India.
Acta Crystallogr C. 2006 Jun;62(Pt 6):o324-7. doi: 10.1107/S0108270106013874. Epub 2006 May 16.
In (2RS,6SR)-N-diphenylacetyl-2,6-diphenylpiperidin-4-one, C31H27NO2, (I), the piperidinone ring adopts an almost ideal twist-boat conformation, and the molecules are linked into sheets by a combination of one C-H...O hydrogen bond and one C-H...pi(arene) hydrogen bond. (2RS,3SR,5RS,6SR)-3,5-Dimethyl-2,6-diphenyl-N-phenylacetylpiperidin-4-one, C27H27NO2, (II), crystallizes with Z' = 2 in the space group P-1; the piperidinone rings adopt an almost ideal boat conformation in one of the molecules and a conformation between boat and twist-boat in the other. The molecules of (II) are linked into sheets by a combination of five C-H...O hydrogen bonds and one C-H...pi(arene) hydrogen bond.
在(2RS,6SR)-N-二苯基乙酰基-2,6-二苯基哌啶-4-酮（C₃₁H₂₇NO₂，(I)）中，哌啶酮环采取几乎理想的扭船构象，并且分子通过一个C-H...O氢键和一个C-H...π(芳烃)氢键的组合连接成片层结构。(2RS,3SR,5RS,6SR)-3,5-二甲基-2,6-二苯基-N-苯基乙酰基哌啶-4-酮（C₂₇H₂₇NO₂，(II)）在空间群P-1中以Z' = 2结晶；在其中一个分子中哌啶酮环采取几乎理想的船式构象，而在另一个分子中采取船式和扭船式之间的构象。(II)的分子通过五个C-H...O氢键和一个C-H...π(芳烃)氢键的组合连接成片层结构。
