Group-13 carbenoid ligands at tungsten: Coordination and C-H activation

Mariusz Molon; Christian Gemel; Roland A. Fischer

doi:10.1016/j.jorganchem.2013.08.039

Group-13 carbenoid ligands at tungsten: Coordination and C-H activation

Mariusz Molon, Christian Gemel, Roland A. Fischer

Max-Planck-lnstitut für Kohlenforschung

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

11 Scopus citations

Abstract

Reactions of zero valent tungsten complexes with AlCp* and GaCp* (Cp* = pentamethylcyclopentadienyl) are presented. The treatment of [W(C₂H₄)₂(PMe₃) ₄] with 2 equiv of GaCp* or AlCp* leads to the formation of cis-[W(GaCp*)₂(PMe₃)₄] (1) or trans, cis, cis-[W(AlCp*)₂(C₂H₄) ₂(PMe₃)₂] (2) under cleavage of ethylene or PMe₃ ligands, respectively. Treatment of either [W(C ₂H₄)₂(PMe₃)₄] or 2 with 4 or 6 equiv of AlCp* leads to the C-H activated species of over-all composition [W(AlCp*)₆(C₂H₄)₂] (3), which features terminal W-Has well as bridging W-H-Al hydride ligands and C-H activated C₂H₄ resulting in Al-C bonds. All new compounds are characterized by solution NMR, IR, elemental analyses (EA), liquid injection field desorption ionization mass spectrometry (LIFDI-MS) as well as single crystal x-ray crystallography.

Original language	English
Pages (from-to)	573-578
Number of pages	6
Journal	Journal of Organometallic Chemistry
Volume	751
DOIs	https://doi.org/10.1016/j.jorganchem.2013.08.039
State	Published - 1 Feb 2014
Externally published	Yes

Keywords

Aluminium
C-H activation
Coordination
Gallium
Indium
Tungsten

Access to Document

10.1016/j.jorganchem.2013.08.039

Cite this

@article{e794f41c344f45ea9c3e561749ca0fb2,

title = "Group-13 carbenoid ligands at tungsten: Coordination and C-H activation",

abstract = "Reactions of zero valent tungsten complexes with AlCp* and GaCp* (Cp* = pentamethylcyclopentadienyl) are presented. The treatment of [W(C2H4)2(PMe3) 4] with 2 equiv of GaCp* or AlCp* leads to the formation of cis-[W(GaCp*)2(PMe3)4] (1) or trans, cis, cis-[W(AlCp*)2(C2H4) 2(PMe3)2] (2) under cleavage of ethylene or PMe3 ligands, respectively. Treatment of either [W(C 2H4)2(PMe3)4] or 2 with 4 or 6 equiv of AlCp* leads to the C-H activated species of over-all composition [W(AlCp*)6(C2H4)2] (3), which features terminal W-Has well as bridging W-H-Al hydride ligands and C-H activated C2H4 resulting in Al-C bonds. All new compounds are characterized by solution NMR, IR, elemental analyses (EA), liquid injection field desorption ionization mass spectrometry (LIFDI-MS) as well as single crystal x-ray crystallography.",

keywords = "Aluminium, C-H activation, Coordination, Gallium, Indium, Tungsten",

author = "Mariusz Molon and Christian Gemel and Fischer, {Roland A.}",

note = "Funding Information: The dissertation project of MM is supported by German Chemical Industry Fund (fellowship) and the Ruhr University Research School ( http://www.research-school.rub.de ). Support by the German Research Foundation grant No Fi 502/23-1 is gratefully acknowledged. ",

year = "2014",

month = feb,

day = "1",

doi = "10.1016/j.jorganchem.2013.08.039",

language = "English",

volume = "751",

pages = "573--578",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Group-13 carbenoid ligands at tungsten

T2 - Coordination and C-H activation

AU - Molon, Mariusz

AU - Gemel, Christian

AU - Fischer, Roland A.

N1 - Funding Information: The dissertation project of MM is supported by German Chemical Industry Fund (fellowship) and the Ruhr University Research School ( http://www.research-school.rub.de ). Support by the German Research Foundation grant No Fi 502/23-1 is gratefully acknowledged.

PY - 2014/2/1

Y1 - 2014/2/1

N2 - Reactions of zero valent tungsten complexes with AlCp* and GaCp* (Cp* = pentamethylcyclopentadienyl) are presented. The treatment of [W(C2H4)2(PMe3) 4] with 2 equiv of GaCp* or AlCp* leads to the formation of cis-[W(GaCp*)2(PMe3)4] (1) or trans, cis, cis-[W(AlCp*)2(C2H4) 2(PMe3)2] (2) under cleavage of ethylene or PMe3 ligands, respectively. Treatment of either [W(C 2H4)2(PMe3)4] or 2 with 4 or 6 equiv of AlCp* leads to the C-H activated species of over-all composition [W(AlCp*)6(C2H4)2] (3), which features terminal W-Has well as bridging W-H-Al hydride ligands and C-H activated C2H4 resulting in Al-C bonds. All new compounds are characterized by solution NMR, IR, elemental analyses (EA), liquid injection field desorption ionization mass spectrometry (LIFDI-MS) as well as single crystal x-ray crystallography.

AB - Reactions of zero valent tungsten complexes with AlCp* and GaCp* (Cp* = pentamethylcyclopentadienyl) are presented. The treatment of [W(C2H4)2(PMe3) 4] with 2 equiv of GaCp* or AlCp* leads to the formation of cis-[W(GaCp*)2(PMe3)4] (1) or trans, cis, cis-[W(AlCp*)2(C2H4) 2(PMe3)2] (2) under cleavage of ethylene or PMe3 ligands, respectively. Treatment of either [W(C 2H4)2(PMe3)4] or 2 with 4 or 6 equiv of AlCp* leads to the C-H activated species of over-all composition [W(AlCp*)6(C2H4)2] (3), which features terminal W-Has well as bridging W-H-Al hydride ligands and C-H activated C2H4 resulting in Al-C bonds. All new compounds are characterized by solution NMR, IR, elemental analyses (EA), liquid injection field desorption ionization mass spectrometry (LIFDI-MS) as well as single crystal x-ray crystallography.

KW - Aluminium

KW - C-H activation

KW - Coordination

KW - Gallium

KW - Indium

KW - Tungsten

UR - http://www.scopus.com/inward/record.url?scp=84893802087&partnerID=8YFLogxK

U2 - 10.1016/j.jorganchem.2013.08.039

DO - 10.1016/j.jorganchem.2013.08.039

M3 - Article

AN - SCOPUS:84893802087

SN - 0022-328X

VL - 751

SP - 573

EP - 578

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

ER -

Group-13 carbenoid ligands at tungsten: Coordination and C-H activation

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this