RT info:eu-repo/semantics/article
T1 Snapshots of the Stopped Polymerization of a Hindered Isocyanide within the Coordination Sphere of Ni(II)
A1 Álvarez-Miguel, Lucía
A1 Carmen Rodríguez, Clara del
A1 Álvarez González, Celedonio Manuel
A1 García Rodríguez, Raúl
A1 Miguel San José, Daniel
K1 Química inorgánica
K1 Inorganic carbon compounds
K1 Polymers
AB The use of cationic Ni(II) complexes containing dialkyldithiophosphate ligands in conjunction with sterically hindered isocyanides suppresses polymerization, allowing the formation of well-defined monomeric cationic Ni(II) complexes 3 that result from the coupling of three isocyanides. These complexes have been characterized, including X-ray structure determination, and represent a snapshot of the first steps of the polymerization of isocyanide. Studies via X-ray, IR, and NMR seem to indicate that the key active species in the Ni(II)-catalyzed isocyanide polymerization and its so-called “merry-go-round” mechanism is not a carbene, as has been proposed, but actually a formamidinyl species. The use of the most sterically congested set of ligands enabled the isolation of the intermediate species 4c, which contains only two coupled isocyanides and can be used in the stepwise and controlled synthesis of a rare mixed Ni(II) complex 5 by using two different isocyanides.
PB American Chemical Society
SN 0020-1669
YR 2025
FD 2025
LK https://uvadoc.uva.es/handle/10324/76084
UL https://uvadoc.uva.es/handle/10324/76084
LA eng
NO Inorganic Chemistry, 2025, vol. 64, n. 11, p. 5532–5542
NO Producción Científica
DS UVaDOC
RD 25-jun-2025