Studies of Thermal Transformations in Organic Crystals

This research deals with three types of thermal solid-state transformations: (I) a physical transformation (or phase change); (II) a solid-state Beckmann-Chapman rearrangement; and (III) a solid-state Mumm rearrangement. During the course of other solid-state research, two polymorphs of benz-2,4-dinitroanilide (1) were discovered. A phase change from 1A to 1B occurred at 130(DEGREES) with sharp frontal migration in the long direction of the crystals. An investigation of the crystal structures of both forms was completed. Crystals of 1A were monoclinic, space group P2(,1/c) and z = 4. a = 6.810(2), b = 11.125(4), c = 17.178(5) (ANGSTROM), (beta) = 109.38(2)(DEGREES). Crystals of 1B were triclinic, space group P(')1 and z = 2. a = 7.649(2), b = 11.983(3), c = 7.414(2) (ANGSTROM), (alpha) = 101.82(2), (beta) = 110.57(2), (gamma) = 84.42(2)(DEGREES).

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Chemistry

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Murray, Barbara Michele

• Chemistry, Organic

Identifier

(UMI)AAI8511648

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/70293