01861nas a2200181   4500008004100000022001400041245022400055210006900279260011000348300001400458490000700472520097200479100002401451700002401475700002501499700002701524856012801551       2009                        eng d  a1466-803300aIsostructural molecular strings linked via conserved dipolar (ether) O center dot center dot center dot C=O short contacts in conformational polymorphs of racemic 2,4-di-O-acetyl-6-O-tosyl-myo-inositol 1,3,5-orthoesters0 aIsostructural molecular strings linked via conserved dipolar eth  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN  a1022-10290 v113 a<p>Conformational dimorphs of racemic 2,4-di-O-acetyl-6-O-tosyl-myo-inositol 1,3,5-orthoformate and its orthoacetate analogue were characterized using single crystal X-ray diffraction, thermal analysis and hot-stage microscopy techniques. In these polymorphs, the tosyl group adopted different conformations due to the rotation about the O-S bond. A significant variation in the torsion angle for the tosyl group (similar to 56 degrees) was observed for Form II crystal of the orthoformate derivative, which exhibited an intramolecular dipolar S=O center dot center dot center dot C=O (sulfonyl-carbonyl) short contact. An interesting feature in all conformational polymorphs is the formation of an isostructural string (despite the differences in the orientation of the tosyl group) linked via dipolar (ether) O center dot center dot center dot C=O contacts, which is further stitched by other weak interactions to form different layers in their crystal lattice.</p>1 aManoj, Kochunnoonny1 aGonnade, Rajesh, G.1 aBhadbhade, Mohan, M.1 aShashidhar, Mysore, S.  uhttps://library.ncl.res.in/content/isostructural-molecular-strings-linked-conserved-dipolar-ether-o-center-dot-center-dot-0