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The crystal structure of nematogenic 2-bromo-1,4-phenylenediyl bis(trans-4-n-propylcyclohexanoate) — a special kind of disorder

✍ Scribed by Prof. Dr. sc. H. Hartung; Dipl.-Chem. G. Winter

Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
301 KB
Volume
22
Category
Article
ISSN
0232-1300

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✦ Synopsis

The Crystal Structure of Nematogenic 2-Bromo-1,4phenylenediyl Bis(trans-4-n-propylcyclohexanoate)a Special Kind of Disorder 'I'lie title compound with t h r foi mnla C3H7-C"6131u-1~00-C,H31i~-OOC-C6H,,-C3H, (RPRl'C) crystallizes in a triclinic iinit cc~ll \it11 dimimsions a = 5.822(2), b = 8.732(3), c = 19.016(5) A, (x = 94.42(3)", /J = 93.47(3)', 1' = 104.85(2)' containing one m o l ~c u l ~. The structure has been solved by heavy atom method arid refined to R = 0.083. l'hr RI'RI'C molccnlrs ndopt an optimum s t i ~t r h r d fix m and rxhihit pseudo-ccntrosymmetry i n r n i ~s ~q i ~i ~n e r nf n spccinl land of cliwrdrr \ itliin thc crystal lattirc. 1)ic Titclsiil)stan? niit tlcr 1;oi mcl C' ,H ;-C ~6 1 ~l o -C 0 0 -~y 6 H 3 1 3 i OOC-(y61~l,-C,lf, (13Pl3PC) l~rldct cinr trikliiic. E I ~~m c ~i i t n ~z ~l I r mit den Al~mcss~rngcn n : 5,822(2), h = 2 8,732(3), c = 1:3,016(5) A, o = W,42(3)', / 3 = 93,47(3)", 71 : 104,85(2)' und dem Tnhttlt von rinem Molrkiil aim. Die Struktur \urdc mit Hilfc d c ~i . Sch~vrratommethode gcllmt nnd bis zii einem R-Wrrt yon 0,083 vcrfrinrrt. Die Rl'RlY-hlnlrkiile hcsitzcn cine optimal gestrvcktr Gcstnlt iind wrisen l'srndozentrosymmrtrir niif, die sir11 ails ~i n ~r spc7irlleil Fchlordnm~g d(.r ~Iolckiilp~clci~ng im liristal lgitt er riy$bt

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