CgH6CIzlN, monoclinic, space group P2~/c; a=8.297 (1), b= 15.257 (8), c=8-831 (4) ,~, ,8=110.38 (3)°; Z=4, Dm=2"068, Dx=2"066 g cm -3. The structure was refined to an R of 0.03. The complex is planar with a linear N... I-C1 grouping extending along the expected orientation of the N atom lone pair.

No abstract

The crystal structure of cis-l,2-dichloroacenaphthene has been determined by the heavy-atom method and has been refined to R = 0.049. Space group P21/c, Z= 4, a = 15.502, b = 6.247, c = 10.173 A,, fl = 97.00 °.The naphthalene ring system is planar and the five-membered ring is twisted owing to the strong steric interaction between the cis CI atoms. The short intramolecular C1...C1 distance is only 3.126 A and might be the cause of the unexpected difference observed in the 3sCl n.q.r, frequencies between the cis and trans isomers.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

1997 stereochemistry stereochemistry (general, optical resolution) O 0030 -019Asymmetric Synthesis of Chiral Sulfoxides and Sulfinimines Using N-Sulfinylsultam.-The diastereomerically pure sulfinylating reagent (III) reacts with nucleophilic Grignard reagents or the zinc reagent derived from (VI) to yield chiral sulfoxides with excellent yields and enantioselectivities. Under specific conditions sequential reaction of (III) with LiN(Tms)2 followed by aldehydes (VIII) leads to enantiomerically pure sulfinimines. In all cases the chiral auxiliary ( I) is recovered quantitatively.-(OPPOLZER, W.; FROELICH, O.; WIAUX-ZAMAR, C.; BERNARDINELLI, G.; Tetrahedron Lett. 38 (1997Lett. 38 ( ) 16, 2825Lett. 38 ( -2828 Dep. Chim. Org., Univ. Geneve, CH-1211 Geneve, Switz.; EN)