Substitution chemistry of the cobalt complexes RCCo3(CO)9 (R = H, CHO) with the diphosphine ligand: 4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione (bpcd). Syntheses, X-ray structures and reactivity.

The reaction between the tetrahedrane cluster RCCo3(CO)9{R = CHO (1), H (3)} and the redox-active diphosphine ligand 4,5-bis(diphenylphosphino)-4-cyclopenten-1,3- dione (bpcd) leads to the replacement of two CO groups and formation of RCCo3(CO)7(bpcd) {R = CHO (2), H (4)}. Clusters 2 and 4 are thermally unstable and readily transform into the new P-C bond cleavage cluster 5. All three clusters 2, 4, and 5 have been isolated and fully characterized in solution by IR and 31P NMR spectroscopy. VT 31P NMR data indicate that the bpcd ligand in RCCo3(CO)7(bpcd) is fluxional at 187 K in THF. Clusters 2, 4, and 5 have been structurally characterized by X-ray diffraction analyses.

Grantor dc:publisher

University of North Texas

Year dc:date

2001

Author dc:creator

• Liu, Jie

Contributors dc:contributor

• Richmond, Michael
• Chyan, Oliver M. R.
• Thomas, Ruthanne D.

• Cobalt compounds.
• Transition metal complexes.
• Ligand binding (Biochemistry)
• Scission (Chemistry)
• clusters
• Co substitution
• P-C bond activation
• 31P NMR

Statement dc:rights

• Public
• Copyright
• Liu, Jie
• Copyright is held by the author, unless otherwise noted. All rights reserved.

Language dc:language

English

Identifier

oclc: 52031843
https://digital.library.unt.edu/ark:/67531/metadc3043/
ark: ark:/67531/metadc3043

OAI identifier oai:identifier

info:ark/67531/metadc3043