The crystal and molecular structures of rosebengal derivatives and organometallic compounds containing mercury, rhodium, silver and silicon

Technical Report · Fri Jul 01 04:00:00 EDT 1988

OSTI ID:6505923

Janakiraman, M N

This dissertation reports the single crystal x-ray structure determinations of seven compounds. These were performed to unequivocally unravel molecular structures and to provide other information at the molecular level which help explain their properties. Rose bengal, like any other xanthene dye, can exist in at least three different structural forms. These are the lactone form, the zwitterionic form and the quinoidal form. In order to fully characterize two of these forms (the lactone and the quinoid forms) three rosebengal derivatives were investigated by the single crystal x-ray method. The crystal and molecular structure of the chloromercurate with the composition (ClC/sub 6/H/sub 12/NHgCL)HgCL/sub 3/ was determined in order to establish the stereo- and regio-chemistry in the organomercurate portion and to establish the nature of the chloromercurate anion. In order to fully characterize 1,2,3-cyclononatriene (the smallest isolable cyclic butatriene), a stable rhodium complex containing the triene as a ligand was subjected to crystal structure analysis; the free triene molecule can otherwise be stabilized only in dilute solutions and in the absence of oxygen and hence a full characterization of the free triene is made impossible. 88 refs., 16 figs., 42 tabs.

• Research Organization: Ames Lab., IA (USA)
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6505923
• Report Number(s): IS-T-1340; ON: DE89007627
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
AROMATICS
BOND ANGLE
BOND LENGTHS
CARBOXYLIC ACIDS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DIMENSIONS
DYES
ESTERS
FLUORESCEIN
HETEROCYCLIC COMPOUNDS
HYDROXY ACIDS
HYDROXY COMPOUNDS
INDICATORS
LACTONES
LATTICE PARAMETERS
LENGTH
MERCURY COMPOUNDS
MOLECULAR STRUCTURE
ORGANIC ACIDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC IODINE COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PHENOLS
POLYPHENOLS
REAGENTS
REFRACTORY METAL COMPOUNDS
RHODIUM COMPOUNDS
ROSE BENGAL
SCATTERING
SILICON COMPOUNDS
SILVER COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRICLINIC LATTICES
X-RAY DIFFRACTION