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.
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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 -