English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The crystal and molecular structures of three racemic  erythro- ( R *,  S *)-(±)- α -2-piperidinyl-2,8-bis(trifluoromethyl)-4-quinolinemethanol  n -nitrobenzoates,  n  = 2, 3, and 4, are described. The cations uniformly adopt an L-shaped geometry with protonation leading to a piperidin-1-ium ring in each case. A non-planar arrangement is found for the anion in ( 1 ;  n  = 2), owing to steric congestion, but almost planar arrangements are found in each of the anions in ( 2 ;  n  = 3) and ( 3 ;  n  = 4). Supramolecular chains are found in each of the crystal structures but these are sustained by different hydrogen bonding synthons. More efficient crystal packing in ( 3 ;  n  = 4) is correlated with a single synthon as opposed to two distinct synthons in each of ( 1 ;  n  = 2) and ( 2 ;  n  = 3). Crystal data for ( 1 ;  n  = 2): monoclinic,  P 2 1 / n, a  = 13.2144(6),  b  = 8.1028(2),  c  = 22.9724(9) Å,  β  = 105.919(1)°,  V  = 2365.41(15) Å 3 ,  Z  = 4,  R  = 0.053. Crystal data for ( 2 ;  n  = 3): monoclinic,  P 2 1 / n, a  = 6.8389(2),  b  = 12.8432(4),  c  = 26.7910(9) Å,  β  = 90.868(2)°,  V  = 2352.87(13) Å 3 ,  Z  = 4,  R  = 0.044. Crystal data for ( 3 ;  n  = 4): monoclinic,  P 2 1 / n, a  = 16.9854(8),  b  = 6.5069(2),  c  = 20.2083(9) Å,  β  = 92.116(2)°,  V  = 2231.94(16) Å 3 ,  Z  = 4,  R  = 0.065.

Structural study of mefloquinium salts with three isomeric n -nitrobenzoates ( n = 2, 3, and 4)