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

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

doi:10.1039/c6dt00144k

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

Thomas Simler
, Gilles Frison
, Pierre Braunstein
, Andreas A. Danopoulos

Université de Strasbourg
Université Paris-Saclay

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

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

Original language	English
Pages (from-to)	2800-2804
Number of pages	5
Journal	Dalton Transactions
Volume	45
Issue number	7
DOIs	https://doi.org/10.1039/c6dt00144k
Publication status	Published - 21 Feb 2016
Externally published	Yes

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

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

author = "Thomas Simler and Gilles Frison and Pierre Braunstein and Danopoulos, \{Andreas A.\}",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2016.",

year = "2016",

month = feb,

day = "21",

doi = "10.1039/c6dt00144k",

language = "English",

volume = "45",

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TY - JOUR

T1 - Direct synthesis of doubly deprotonated, dearomatised lutidine PNP Cr and Zr pincer complexes based on isolated K and Li ligand transfer reagents

AU - Simler, Thomas

AU - Frison, Gilles

AU - Braunstein, Pierre

AU - Danopoulos, Andreas A.

PY - 2016/2/21

Y1 - 2016/2/21

N2 - Double deprotonation of 2,6-bis-(di-tert-butylphosphinomethyl)-pyridine (tBuPNtBuP), with KCH2C6H5 afforded K2(tBuP∗NatBuP∗), Na = anionic amido N, tBuP∗ = di-tert-butyl vinylic P donor. The analogous [Li2(tBuP∗NatBuP∗)]2 (1) was reacted with [CrCl2(THF)2] and [ZrCl4(THT)2] to give the helical [Cr{Cr(tBuP∗NatBuP∗)Cl}2] (2) and [Zr(tBuP∗NatBuP∗)Cl2] (3), respectively. DFT calculations support dearomatisation of P∗NaP∗ and its high donor ability.

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

U2 - 10.1039/c6dt00144k

DO - 10.1039/c6dt00144k

M3 - Article

AN - SCOPUS:84958092789

SN - 1477-9226

VL - 45

SP - 2800

EP - 2804

JO - Dalton Transactions

JF - Dalton Transactions

IS - 7

ER -

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

Abstract

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