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@article{856834,
author = {Moravec, Zdeněk and Sluka, Radek and Nečas, Marek and Jančík, Vojtěch and Pinkas, Jiří},
article_location = {Spojené státy americké},
article_number = {17},
keywords = {aluminum chloride alkoxides},
language = {eng},
issn = {0020-1669},
journal = {INORGANIC CHEMISTRY},
title = {A Structurally Diverse Series of Aluminum Chloride Alkoxides [ClxAl(m-OR)y]n (R = nBu, cHex, Ph, 2.4-tBu2C6H3)},
volume = {48},
year = {2009}
}
TY - JOUR
ID - 856834
AU - Moravec, Zdeněk - Sluka, Radek - Nečas, Marek - Jančík, Vojtěch - Pinkas, Jiří
PY - 2009
TI - A Structurally Diverse Series of Aluminum Chloride Alkoxides [ClxAl(m-OR)y]n (R = nBu, cHex, Ph, 2.4-tBu2C6H3)
JF - INORGANIC CHEMISTRY
VL - 48
IS - 17
SP - 8106-8114
EP - 8106-8114
PB - American Chemical Society, Washington DC
SN - 00201669
KW - aluminum chloride alkoxides
N2 - A diverse series of aluminum chloride alkoxides, [ClxAl(m-OR)y]n (R=nBu, cHex, Ph, 2,4-tBu2C6H3), was synthesized using the reactions of dichlorethylalane (EtAlCl2) with cyclohexanol (cHexOH), n-butanol (nBuOH), and phenols (PhOH and 2,4-tBu2C6H3OH). Eight molecular products were isolated and structurally characterized. The dimeric [Cl2Al(m- OcHex)2AlCl2] (1) was the smallest oligomer isolated among the cyclohexanolate derivatives. The adduct of 1 with cyclohexanol is a dinuclear molecule [Cl2(HOcHex)Al(m-OcHex)2AlCl2] (2) which represents a possible intermediate in the conversion reaction leading to the formation of a trinuclear bicyclic [ClAl{(m-OcHex)2AlCl2}2] (3). Two polymorphic forms of 3 were isolated. Further coordination of cyclohexanol to the Lewis acidic five-coordinate aluminum atom in 3 provided [Cl(HOcHex)Al{(m-OcHex)2AlCl2}2] (4) with octahedrally coordinated central aluminum. Compound 4 could be regarded as a precursor to the well-known Mitsubishi (tridiamond) tetranuclear species. The reactions of EtAlCl2 with less sterically demanding nBuOH yielded a cyclic trimer, [Cl2Al(m-OnBu)]3 (5), and a unique trinuclear ionic species, [Cl2Al{(m-OH)(m- OnBu)AlCl(HOnBu)3}2]Cl (6) with a linear Al(m-O)2Al(m-O)2Al core. In the reactions with phenols, the aromatic groups preferentially stabilized dimeric structures of [Cl2Al(m-OR)2AlCl2] (R = Ph, 7; 2,4-t Bu2C6H3, 8). Since these compounds could be considered as intermediates in the nonhydrolytic condensation reactions of metal halides with metal alkoxides, a mixture of EtAlCl2 with cHexOH was used as a precursor for the nonaqueous synthesis of alumina by alkylhalide elimination.
ER -
MORAVEC, Zdeněk, Radek SLUKA, Marek NEČAS, Vojtěch JANČÍK a Jiří PINKAS. A Structurally Diverse Series of Aluminum Chloride Alkoxides [ClxAl(m-OR)y]n (R = nBu, cHex, Ph, 2.4-tBu2C6H3). \textit{INORGANIC CHEMISTRY}. Spojené státy americké: American Chemical Society, Washington DC, 2009, roč.~48, č.~17, s.~8106-8114. ISSN~0020-1669.
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