A cationic aluminum methyl complex supported by an anionic tacn ligand

被引：13

作者：

Cui, CM ^{[1
]}

Giesbrecht, GR ^{[1
]}

Schmidt, JAR ^{[1
]}

Arnold, J ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

来源：

INORGANICA CHIMICA ACTA | 2003年 / 351卷 / 01期

基金：

美国国家科学基金会;

关键词：

aluminum; cation; macrocycle; borate;

D O I：

10.1016/S0020-1693(03)00124-5

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of (tacn)H [(tacn)H = 1,4-diisopropyl-1,4,7-triazacyclononane] with AlMe3 leads to the formation of the thermally stable adduct [(tacn)H].AlMe3 (1). The dimeric aluminum dimethyl complex [(tacn)AlMe2](2) (2) was obtained by metathesis of (tacn)Li-2 with two equivalent of Me2AlCl in toluene at 80 degreesC. In 2 the anionic nitrogen atoms bridge the two AlMe2 units while the neutral amino atoms are free of coordination. Treatment of 2 with 2 equiv. of B(C6F5)(3) in CH2Cl2 yielded a well separated ionic aluminum methyl borate complex [((tacn)AlMe)(2)][MeB(C6F5)(3)](2) (3), featuring five-coordinate aluminum centers. Molecular structures of 2 and 3 were determined by single-crystal X-ray crystallography. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：404 / 408

页数：5

共 30 条

[21] Three-coordinate cationic aluminum alkyl complexes incorporating β-diketiminate ligands [J].

Radzewich, CE ;

Guzei, IA ;

Jordan, RF .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (37) :8673-8674

[22] Reversible ethylene cycloaddition reactions of cationic aluminum β-diketiminate complexes [J].

Radzewich, CE ;

Coles, MP ;

Jordan, RF .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (36) :9384-9385

[23]

RUCE M, 1998, CHEM COMMUN, P2523

[24]

*SAINT, 1995, SAX AR DET INT PROGR

[25] Reactions of a triazacyclononane-supported tantalum-lithium bridging alkylidene with organic substrates [J].

Schmidt, JAR ;

Arnold, J .

ORGANOMETALLICS, 2002, 21 (16) :3426-3433

[26] Neutral and cationic aluminum complexes supported by sterically bulky amidinate ligands [J].

Schmidt, JAR ;

Arnold, J .

ORGANOMETALLICS, 2002, 21 (11) :2306-2313

[27] Reactivity of a tantalum-lithium alkylidene supported by an anionic triazacyclononane ligand [J].

Schmidt, JAR ;

Arnold, J .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (34) :8424-8425

[28] Alkyl and alkylidene tantalum-lithium complexes supported by an anionic triazacyclononane ligand [J].

Schmidt, JAR ;

Chmura, SA ;

Arnold, J .

ORGANOMETALLICS, 2001, 20 (06) :1062-1064

[29]

*SMART, 1995, AR DET SOFTW PACK

[30]

*XPREP, 1995, PART SHELXTL CRYST S

← 1 2 3 →