Document Type

Article

Publication Date

12-2018

Publication Title

Polyhedron

Volume

156

Pages

297-302

Publisher Name

Elsevier Science

Abstract

Bis(carbene)borate ligand transfer to the nickel nitrosyl synthon Ni(NO)(PPh3)2Br provides the new nickel nitrosyl complex Ph2B(t BuIm)2Ni(NO)(PPh3). The solid state structure reveals a trigonal pyramidal nickel ion with a very long bond to the apical PPh3 ligand. The complex reversibly dissociates PPh3 in solution to afford three‐coordinate Ph2B(t BuIm)2Ni(NO), with NMR data providing evidence for PPh3 binding at low temperatures. Ligand transfer to Ni(PMe3)2Cl2 provides the square planar complex, Ph2B(t BuIm)2Ni(PMe3)Cl, which shows no evidence for rearranging to the form a homoleptic complex with two bis(carbene)borate ligands. This complex is a suitable synthon for the [Ph2B(t BuIm)2Ni]+ fragment, as demonstrated by the synthesis of the ‐allyl complex Ph2B(t BuIm)2Ni(3 ‐C7H7). The ‐allyl complex reacts with O2 to provide benzaldehyde and an unstable complex that is tentatively identified as the nickel(II) hydroxide [Ph2B(t BuIm)2Ni(‐OH)]2.

Comments

Author Posting © Elsevier Science, 2018. This is the author's version of the work. It is posted here by permission of Elsevier Science for personal use, not for redistribution. The definitive version was published in Polyhedron, Volume 52, Issue 156, December, 2018. https://doi.org/10.1016/j.poly.2018.09.026

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.

Available for download on Tuesday, December 01, 2020

Share

COinS