Direct synthesis of doubly deprotonated, dearomatised lutidine PNP Cr and Zr pincer complexes based on isolated K and Li ligand transfer reagents | Zendy

Thomas Simler | Zendy; Gilles Frison | Zendy; Pierre Braunstein | Zendy; Andreas A. Danopoulos | Zendy

Open Access

Direct synthesis of doubly deprotonated, dearomatised lutidine PNP Cr and Zr pincer complexes based on isolated K and Li ligand transfer reagents

Author(s) -

Thomas Simler,

Gilles Frison,

Pierre Braunstein,

Andreas A. Danopoulos

Publication year - 2016

Publication title -

dalton transactions

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.98

H-Index - 184

eISSN - 1477-9234

pISSN - 1477-9226

DOI - 10.1039/c6dt00144k

Subject(s) - deprotonation , transmetalation , chemistry , ligand (biochemistry) , pincer movement , zirconium , lithium (medication) , medicinal chemistry , reagent , chromium , polymer chemistry , inorganic chemistry , organic chemistry , catalysis , ion , biochemistry , receptor , medicine , endocrinology

Double deprotonation of 2,6-bis-(di-tert-butylphosphinomethyl)-pyridine ((tBu)PN(tBu)P), with KCH2C6H5 afforded K2((tBu)P*Na(tBu)P*), Na = anionic amido N, (tBu)P* = di-tert-butyl vinylic P donor. The analogous [Li2((tBu)P*Na(tBu)P*)]2 (1) was reacted with [CrCl2(THF)2] and [ZrCl4(THT)2] to give the helical [Cr{Cr((tBu)P*Na(tBu)P*)Cl}2] (2) and [Zr((tBu)P*Na(tBu)P*)Cl2] (3), respectively. DFT calculations support dearomatisation of P*NaP* and its high donor ability.

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