Isolation of a hexanuclear chromium cluster with a tetrahedral hydridic core and its catalytic behavior for ethylene oligomerization

Ahmed Alzamly; Sandro Gambarotta; Ilia Korobkov; Muralee Murugesu; Jennifer J.H. Le Roy; Peter H.M. Budzelaar

doi:10.1021/ic500445b

Isolation of a hexanuclear chromium cluster with a tetrahedral hydridic core and its catalytic behavior for ethylene oligomerization

Ahmed Alzamly
, Sandro Gambarotta
, Ilia Korobkov
, Muralee Murugesu
, Jennifer J.H. Le Roy
, Peter H.M. Budzelaar

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

16 Citations (Scopus)

Abstract

A chromium complex [2-(NHCH₂PPh₂)C₅H ₄N]CrCl₃·THF₂ (1) of the ligand PyNHCH₂PPh₂ has been synthesized, characterized, and examined for its catalytic behavior toward ethylene oligomerization. When complex 1 was treated with (i-Bu)₃Al, an unprecedented divalent polyhydride chromium cluster μ,κ¹,κ², κ³-N,N,P-{[2-(NCH₂PPh₂)C ₅H₄N]Cr(μ-H)}₄[(μ-Cl)Cr(μ-Cl)Al(i-Bu) ₂Cl]₂ (2) was obtained. The complex contains a Cr ₄H₄ core, which is expected to be diamagnetic, and which remains coordinated to two additional divalent high-spin Cr atoms via bridging interactions. Two aluminate residues remain bonded to the peripheral chromium atoms. The structure, magnetism, and electronic configuration are herein discussed.

Original language	English
Pages (from-to)	6073-6081
Number of pages	9
Journal	Inorganic Chemistry
Volume	53
Issue number	12
DOIs	https://doi.org/10.1021/ic500445b
Publication status	Published - Jun 16 2014
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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@article{3ccd01a89bfd4036b2779f397b468b76,

title = "Isolation of a hexanuclear chromium cluster with a tetrahedral hydridic core and its catalytic behavior for ethylene oligomerization",

abstract = "A chromium complex [2-(NHCH2PPh2)C5H 4N]CrCl3·THF2 (1) of the ligand PyNHCH2PPh2 has been synthesized, characterized, and examined for its catalytic behavior toward ethylene oligomerization. When complex 1 was treated with (i-Bu)3Al, an unprecedented divalent polyhydride chromium cluster μ,κ1,κ2, κ3-N,N,P-\{[2-(NCH2PPh2)C 5H4N]Cr(μ-H)\}4[(μ-Cl)Cr(μ-Cl)Al(i-Bu) 2Cl]2 (2) was obtained. The complex contains a Cr 4H4 core, which is expected to be diamagnetic, and which remains coordinated to two additional divalent high-spin Cr atoms via bridging interactions. Two aluminate residues remain bonded to the peripheral chromium atoms. The structure, magnetism, and electronic configuration are herein discussed.",

author = "Ahmed Alzamly and Sandro Gambarotta and Ilia Korobkov and Muralee Murugesu and \{Le Roy\}, \{Jennifer J.H.\} and Budzelaar, \{Peter H.M.\}",

year = "2014",

month = jun,

day = "16",

doi = "10.1021/ic500445b",

language = "English",

volume = "53",

pages = "6073--6081",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "12",

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TY - JOUR

T1 - Isolation of a hexanuclear chromium cluster with a tetrahedral hydridic core and its catalytic behavior for ethylene oligomerization

AU - Alzamly, Ahmed

AU - Gambarotta, Sandro

AU - Korobkov, Ilia

AU - Murugesu, Muralee

AU - Le Roy, Jennifer J.H.

AU - Budzelaar, Peter H.M.

PY - 2014/6/16

Y1 - 2014/6/16

N2 - A chromium complex [2-(NHCH2PPh2)C5H 4N]CrCl3·THF2 (1) of the ligand PyNHCH2PPh2 has been synthesized, characterized, and examined for its catalytic behavior toward ethylene oligomerization. When complex 1 was treated with (i-Bu)3Al, an unprecedented divalent polyhydride chromium cluster μ,κ1,κ2, κ3-N,N,P-{[2-(NCH2PPh2)C 5H4N]Cr(μ-H)}4[(μ-Cl)Cr(μ-Cl)Al(i-Bu) 2Cl]2 (2) was obtained. The complex contains a Cr 4H4 core, which is expected to be diamagnetic, and which remains coordinated to two additional divalent high-spin Cr atoms via bridging interactions. Two aluminate residues remain bonded to the peripheral chromium atoms. The structure, magnetism, and electronic configuration are herein discussed.

AB - A chromium complex [2-(NHCH2PPh2)C5H 4N]CrCl3·THF2 (1) of the ligand PyNHCH2PPh2 has been synthesized, characterized, and examined for its catalytic behavior toward ethylene oligomerization. When complex 1 was treated with (i-Bu)3Al, an unprecedented divalent polyhydride chromium cluster μ,κ1,κ2, κ3-N,N,P-{[2-(NCH2PPh2)C 5H4N]Cr(μ-H)}4[(μ-Cl)Cr(μ-Cl)Al(i-Bu) 2Cl]2 (2) was obtained. The complex contains a Cr 4H4 core, which is expected to be diamagnetic, and which remains coordinated to two additional divalent high-spin Cr atoms via bridging interactions. Two aluminate residues remain bonded to the peripheral chromium atoms. The structure, magnetism, and electronic configuration are herein discussed.

UR - https://www.scopus.com/pages/publications/84902449093

UR - https://www.scopus.com/pages/publications/84902449093#tab=citedBy

U2 - 10.1021/ic500445b

DO - 10.1021/ic500445b

M3 - Article

AN - SCOPUS:84902449093

SN - 0020-1669

VL - 53

SP - 6073

EP - 6081

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 12

ER -

Isolation of a hexanuclear chromium cluster with a tetrahedral hydridic core and its catalytic behavior for ethylene oligomerization

Abstract

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