Accession Number:

ADA289993

Title:

'Synthesis and Application of Large Heterometallic Cluster Systems',

Descriptive Note:

Interim rept. no. 9,

Corporate Author:

TRINITY COLL DUBLIN (IRELAND) DEPT OF CHEMISTRY

Personal Author(s):

• Weldon, Declan N.

Report Date:

1993-12-01

Pagination or Media Count:

199.0

Abstract:

A brief introduction to the field of lanthanide organometallics is given covering the chemistry of LnII and LnIII compounds. Chapter 1 reports the synthesis and characterization of a range of new oxygen chelating ligands for use in organolanthanide chemistry. The synthesis and characterization of the ligands 2-chloro1,3,6- trioxaheptylbenzene L 1, 1 ,3,6-trioxaheptylbenzene L2, 4,6-dichloro- 1,3- bis1 ,3,6-trioxaheptylbenzene L3, and 1,3-bis 1 ,3,6-trioxaheptylaminobenzene L4 is described. A wide range of lanthanide starting materials LnCl3, LnCp3, LnCp2Cl in various oxidation states LnO, LnII, LnIII were reacted with the lithium and sodium salts of the ligands. These salt elimination reactions gave products which demonstrate a number of different coordination modes depending on the nature of the lanthanide used and the ligand. The novel benzyl alcohol with the long ether side-chain L2 provided the best characterized derivatives. jg

Descriptors:

• *ORGANOMETALLIC COMPOUNDS
• *RARE EARTH ELEMENTS
• BENZENE
• TRANSITION METALS
• SPECTROSCOPY
• SYNTHESIS
• POLYMERS
• CHELATION
• MORPHOLOGY
• THESES
• SODIUM
• FULLERENES
• CARBON
• NONLINEAR OPTICS
• OXYGEN
• LITHIUM
• CHEMISTRY
• CLUSTERING
• LIGANDS
• ORGANIC MATERIALS
• ETHERS
• SALTS
• RANGE(EXTREMES)
• IRELAND
• ELIMINATION REACTIONS
• BENZYL RADICALS
• ALCOHOLS
• YTTERBIUM

Subject Categories:

• Organic Chemistry
• Inorganic Chemistry
• Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE