The Derivative Chemistry of Metallocarboranes Nido-11-Atom Metallocarboranes and Their Lewis Base Adducts.

reportActive / Technical Report | Accession Number: AD0764632 | Need Help?

Abstract:

The reaction between X1-eta-C5H5-2,4,1-C2CoB8H10 or X1,2-C2B9H11-3,1-Co-2,4-C2B8H10-1 and pyridine affords the nido-adducts X9-eta-C5H5-11-C5H5N-7,8,9-C2CoB8H10 and X1,2-C2B9H11-3,9-Co-11-C5H5N-7,8-C2B8H10-1 respectively. Oxidation of these species with FeCl3 affords the substituted closo-compounds. Analogous compounds were prepared from X1-eta-C5H5-2,4,1-C2CoB8H10 with piperidine in place of pyridine. The unsubstituted nido-metallocarboranes X9-eta-C5H5-7,8,9-C2CoB8H11-1 and X1,2-C2B9H11-3,9-Co-7,8-C2B8H11-2 were prepared by degradation of the icosahedral compounds 3-eta-C5H51,2,3-C2CoB9H11 and 1,2-C2B9H11-3,3-Co-1,2-C2B9H11-1. These compounds could be reversibly protonated to give X9-eta-C5H5-7,8,9-C2CoB8H12 and X1,2-C2B9H11-3,9-Co-7,8-C2CoB8H12-1 which eliminate hydrogen on heating. The chemical changes resulting from the replacement of a polyhedral BH2 moiety by eta-C5H5Co2 or 1,2,3-C2CoB9H112 are discussed. Modified author abstract

Author(s):
Jones, Christopher J. ; Francis, James N. ; Hawthorne, M. Frederick
Author Organization(s):
CALIFORNIA UNIV LOS ANGELES DEPT OF CHEMISTRY
Descriptive Note:
Technical rept.,
Pagination:
0060

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-50
Contract/Grant Number(s):
N00014-69-A-0200-4019
Project Number(s):
NR-053-481
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*ORGANOMETALLIC COMPOUNDS, CHEMICAL REACTIONS, ORGANOBORANES, COBALT COMPOUNDS, PIPERIDINES, PYRIDINES, NUCLEAR MAGNETIC RESONANCE, OXIDATION, BORATES, MOLECULAR STRUCTURE, COMPLEX COMPOUNDS
Field(s)/Group(s):
Organic Chemistry
Keyword(s):
NUCLEAR MAGNETIC RESONANCE(BORON 11), ADDITION COMPOUNDS, *CARBORANES, *COBALT ORGANIC COMPOUNDS
Report Date:
1973 Jun 13