Volume 71 Part 10 October 2015 Pages 1147
Volume 71 | Part 10 | October 2015 | Pages 1147– 1150 | 10. 1107/S 2056989015016163 Comparison crystal structure conformations of two structurally related biphenyl analogues: 4, 4′ bis [3 (pyrrolidin 1 yl)prop 1 yn 1 yl] 1, 1′ biphenyl and 4, 4′ bis {3 [(S) 2 methyl pyrrolidin 1 yl]prop 1 yn 1 yl} 1, 1′ biphen yl A. Wan, N. R. Penthala, E. K. Fifer, S. Parkin and P. A. Crooks
Comparison crystal structure conformations of two structurally related biphenyl analogues: 4, 4′ bis [3 (pyrrolidin 1 yl)prop 1 yn 1 yl] 1, 1′ biphenyl and 4, 4′ bis {3 [( S) 2 methyl pyrrolidin 1 yl]prop 1 yn 1 yl} 1, 1′ biphen yl The crystal structures of the two title compounds each display the chair conformation of their piperidine rings. In 4, 4′ bis [3 (pyrrolidin 1 yl)prop 1 yn 1 yl] 1, 1′ biphenyl, the biphenyl rings are coplanar because the mol ecules sit on crystallographic centres of inversion. In 4, 4′ bis {3 [( S) 2 methyl pyrrolidin 1 yl]prop 1 yn 1 yl} 1, 1′ biphenyl, the biphenyl ring system has a twisted conformation with a dihedral angle of 28. 76 (11)°. Keywords: crystal structure; bis tertiary ammonium salt; biphenyl ring; pyrolidine ring Wan et al. Volume 71 | Part 10 | October 2015 | Pages 1147– 1150 | 10. 1107/S 2056989015016163
Figure 1. The mol ecular structure of (I), with ellipsoids drawn at the 50% probability level. Wan et al. Volume 71 | Part 10 | October 2015 | Pages 1147– 1150 | 10. 1107/S 2056989015016163
Figure 2. The mol ecular structure of (II), with ellipsoids drawn at the 50% probability level. Wan et al. Volume 71 | Part 10 | October 2015 | Pages 1147– 1150 | 10. 1107/S 2056989015016163
- Slides: 4