title: N-Heterocyclic carbene phosphaketene adducts as precursors to carbene-phosphinidene adducts and a rearranged π-system.
abstract: The nucleophilic attack of NHCs on the electron deficient carbon of tetryl substituted phosphaketenes Ph3E-P[double bond, length as m-dash]C[double bond, length as m-dash]O (E = Sn-Si), leads quantitatively to the formation of NHC-phosphaketene adducts. With E = Sn or Ge, these zwitterionic adducts decompose upon thermolysis under the release of carbon monoxide to give zwitterionic NHC-phosphinidene adducts. With E = Si an OCP to CPO rearrangement occurs which leads to the formation of a linear π-conjugated molecule, NHC[double bond, length as m-dash]C[double bond, length as m-dash]P-O-SiPh3.
authors.affiliation: Lehn Institute of Functional Materials (LIFM), Sun Yat-Sen University, 510275 Guangzhou, China. lizhsh6@mail.sysu.edu.cn.
authors.forename: Zhongshu
authors.initials: Z
authors.lastname: Li
authors.forename: Xiaodan
authors.initials: X
authors.lastname: Chen
authors.forename: Yaqi
authors.initials: Y
authors.lastname: Li
authors.forename: Cheng-Yong
authors.initials: CY
authors.lastname: Su
authors.forename: Hansjörg
authors.initials: H
authors.lastname: Grützmacher