J 2009

A Structurally Diverse Series of Aluminum Chloride Alkoxides [ClxAl(m-OR)y]n (R = nBu, cHex, Ph, 2.4-tBu2C6H3)

MORAVEC, Zdeněk, Radek SLUKA, Marek NEČAS, Vojtěch JANČÍK, Jiří PINKAS et. al.

Basic information

Original name

A Structurally Diverse Series of Aluminum Chloride Alkoxides [ClxAl(m-OR)y]n (R = nBu, cHex, Ph, 2.4-tBu2C6H3)

Name in Czech

Strukturně bohatá série chloro-alkoxidů hliníku [ClxAl(m-OR)y]n (R = nBu, cHex, Ph, 2.4-tBu2C6H3)

Authors

MORAVEC, Zdeněk (203 Czech Republic, guarantor), Radek SLUKA (203 Czech Republic), Marek NEČAS (203 Czech Republic), Vojtěch JANČÍK (203 Czech Republic) and Jiří PINKAS (203 Czech Republic)

Edition

INORGANIC CHEMISTRY, Spojené státy americké, American Chemical Society, Washington DC, 2009, 0020-1669

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10402 Inorganic and nuclear chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 4.657

RIV identification code

RIV/00216224:14310/09:00029642

Organization unit

Faculty of Science

UT WoS

000269313500014

Keywords in English

aluminum chloride alkoxides
Změněno: 30/11/2009 04:38, Mgr. Zdeněk Moravec, Ph.D.

Abstract

ORIG CZ

V originále

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.

In Czech

Reakcemi EtAlCl2 s alkoholy byla připravena a strukturně charakterizována řada nových chloro-alkoxidů hliníku.

Links

GA203/08/1111, research and development project
Name: Syntéza a vlastnosti anorganicko-organických polymerních materiálů
Investor: Czech Science Foundation, Synthesis and properties of inorganic-organic polymeric materials
MSM0021622410, plan (intention)
Name: Fyzikální a chemické vlastnosti pokročilých materiálů a struktur
Investor: Ministry of Education, Youth and Sports of the CR, Physical and chemical properties of advanced materials and structures