Chromium (iii)-bis(iminophosphoranyl)methanido complexes: Synthesis, X-ray crystal structures and catalytic ethylene oligomerization

Christian Klemps; Antoine Buchard; Romaric Houdard; Audrey Auffrant; Nicolas Mézailles; Xavier Frédéric Le Goff; Louis Ricard; Lucien Saussine; Lionel Magna; Pascal Le Floch

doi:10.1039/b904619d

Chromium (iii)-bis(iminophosphoranyl)methanido complexes: Synthesis, X-ray crystal structures and catalytic ethylene oligomerization

Christian Klemps
, Antoine Buchard
, Romaric Houdard
, Audrey Auffrant
, Nicolas Mézailles
, Xavier Frédéric Le Goff
, Louis Ricard
, Lucien Saussine
, Lionel Magna
, Pascal Le Floch

CNRS
IFP Energies nouvelles

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

Bis(aminophoshonium) salts derived from bis(diphenylphosphino)methane were prepared and triply deprotonated with potassium hexamethyldisilazane to yield the corresponding bis(iminophosphoranyl)methanides, which were then subjected to coordination with Cr^IIICl₃(THF)₃. Binuclear complexes of type [(HC(PPh₂NR)₂Cr(μ-Cl)(Cl)) ₂] (R = iPr, tBu) with an octahedral coordination geometry and a long C-Cr bond were obtained and structurally characterized. In the case of R = o-MeO-C₆H₄, a monomeric species featuring no C-Cr bond is observed. Preliminary evaluation of catalytic activities of these complexes in ethylene oligomerization and polymerization is reported.

langue originale	Anglais
Pages (de - à)	1748-1752
Nombre de pages	5
journal	New Journal of Chemistry
Volume	33
Numéro de publication	8
Les DOIs	https://doi.org/10.1039/b904619d
état	Publié - 1 janv. 2009
Modification externe	Oui

Accès au document

10.1039/b904619d

Contient cette citation

@article{7d5fa212076f488ca9b423249fa9e19a,

title = "Chromium (iii)-bis(iminophosphoranyl)methanido complexes: Synthesis, X-ray crystal structures and catalytic ethylene oligomerization",

abstract = "Bis(aminophoshonium) salts derived from bis(diphenylphosphino)methane were prepared and triply deprotonated with potassium hexamethyldisilazane to yield the corresponding bis(iminophosphoranyl)methanides, which were then subjected to coordination with CrIIICl3(THF)3. Binuclear complexes of type [(HC(PPh2NR)2Cr(μ-Cl)(Cl)) 2] (R = iPr, tBu) with an octahedral coordination geometry and a long C-Cr bond were obtained and structurally characterized. In the case of R = o-MeO-C6H4, a monomeric species featuring no C-Cr bond is observed. Preliminary evaluation of catalytic activities of these complexes in ethylene oligomerization and polymerization is reported.",

author = "Christian Klemps and Antoine Buchard and Romaric Houdard and Audrey Auffrant and Nicolas M{\'e}zailles and \{Le Goff\}, \{Xavier Fr{\'e}d{\'e}ric\} and Louis Ricard and Lucien Saussine and Lionel Magna and \{Le Floch\}, Pascal",

year = "2009",

month = jan,

day = "1",

doi = "10.1039/b904619d",

language = "English",

volume = "33",

pages = "1748--1752",

journal = "New Journal of Chemistry",

issn = "1144-0546",

publisher = "Royal Society of Chemistry",

number = "8",

}

TY - JOUR

T1 - Chromium (iii)-bis(iminophosphoranyl)methanido complexes

T2 - Synthesis, X-ray crystal structures and catalytic ethylene oligomerization

AU - Klemps, Christian

AU - Buchard, Antoine

AU - Houdard, Romaric

AU - Auffrant, Audrey

AU - Mézailles, Nicolas

AU - Le Goff, Xavier Frédéric

AU - Ricard, Louis

AU - Saussine, Lucien

AU - Magna, Lionel

AU - Le Floch, Pascal

PY - 2009/1/1

Y1 - 2009/1/1

N2 - Bis(aminophoshonium) salts derived from bis(diphenylphosphino)methane were prepared and triply deprotonated with potassium hexamethyldisilazane to yield the corresponding bis(iminophosphoranyl)methanides, which were then subjected to coordination with CrIIICl3(THF)3. Binuclear complexes of type [(HC(PPh2NR)2Cr(μ-Cl)(Cl)) 2] (R = iPr, tBu) with an octahedral coordination geometry and a long C-Cr bond were obtained and structurally characterized. In the case of R = o-MeO-C6H4, a monomeric species featuring no C-Cr bond is observed. Preliminary evaluation of catalytic activities of these complexes in ethylene oligomerization and polymerization is reported.

AB - Bis(aminophoshonium) salts derived from bis(diphenylphosphino)methane were prepared and triply deprotonated with potassium hexamethyldisilazane to yield the corresponding bis(iminophosphoranyl)methanides, which were then subjected to coordination with CrIIICl3(THF)3. Binuclear complexes of type [(HC(PPh2NR)2Cr(μ-Cl)(Cl)) 2] (R = iPr, tBu) with an octahedral coordination geometry and a long C-Cr bond were obtained and structurally characterized. In the case of R = o-MeO-C6H4, a monomeric species featuring no C-Cr bond is observed. Preliminary evaluation of catalytic activities of these complexes in ethylene oligomerization and polymerization is reported.

U2 - 10.1039/b904619d

DO - 10.1039/b904619d

M3 - Article

AN - SCOPUS:68749112905

SN - 1144-0546

VL - 33

SP - 1748

EP - 1752

JO - New Journal of Chemistry

JF - New Journal of Chemistry

IS - 8

ER -

Chromium (iii)-bis(iminophosphoranyl)methanido complexes: Synthesis, X-ray crystal structures and catalytic ethylene oligomerization

Résumé

Accès au document

Empreinte digitale

Contient cette citation