Dicationic Tellurium Analogues of the Classic N-Heterocyclic Carbene

被引：29

作者：

Dutton, Jason L. ^{[1
]}

Ragogna, Paul J. ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2010年 / 16卷 / 41期

基金：

加拿大创新基金会; 加拿大自然科学与工程研究理事会;

关键词：

carbene analogues; heterocycles; N ligands; polycations; tellurium; SELENIUM-NITROGEN HETEROCYCLES; RAY CRYSTAL-STRUCTURES; PHOSPHENIUM CATIONS; COMPLEXES; CL; BR; CHEMISTRY; LIGANDS; REACTIVITY; DICHLORIDE;

D O I：

10.1002/chem.201001447

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The synthesis and comprehensive characterization of the first dicationic tellurium analogues of N-heterocyclic carbenes (NHCs) has been reported, in both the +2 and +4 oxidation states. For the +2 oxidation state, a base-stabilized form of TeCl2 is used as the starting material. The dications are isolated by means of halide metathesis and the solid-state structures confirm the previously calculated diimine bonding arrangement. For Te-IV, a diamine is used in a high-yielding dehydrohalogen coupling reaction from TeCl4. The dicationic NHC analogue is isolated in a base-stabilized form through halide abstraction and subsequent coordination by pyridine.

引用

页码：12454 / 12461

页数：8

共 57 条

[1] Sterically tunable phosphenium cations: Synthesis and characterization of bis(arylamino)phosphenium ions, phosphinophosphenium adducts, and the first well-defined rhodium phosphenium complexes [J].

Abrams, MB ;

Scott, BL ;

Baker, RT .

ORGANOMETALLICS, 2000, 19 (24) :4944-4956

[2]

[Anonymous], ANGEW CHEM

[3] A STABLE CRYSTALLINE CARBENE [J].

ARDUENGO, AJ ;

HARLOW, RL ;

KLINE, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1991, 113 (01) :361-363

[4] The reactivity of diazabutadienes toward low oxidation state Group 13 iodides and the synthesis of a new gallium(I) carbene analogue [J].

Baker, RJ ;

Farley, RD ;

Jones, C ;

Kloth, M ;

Murphy, DM .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 2002, (20) :3844-3850

[5] Crystal and electronic structure of stable nitrenium ions. A comparison with structurally related carbenes [J].

Boche, G ;

Andrews, P ;

Harms, K ;

Marsch, M ;

Rangappa, KS ;

Schimeczek, M ;

Willeke, C .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (21) :4925-4930

[6] Stable carbenes [J].

Bourissou, D ;

Guerret, O ;

Gabbaï, FP ;

Bertrand, G .

CHEMICAL REVIEWS, 2000, 100 (01) :39-91

[7] Cyclic phosphenium and arsenium cations with 6 pi electrons and related systems [J].

Carmalt, CJ ;

Lomeli, V ;

McBurnett, BG ;

Cowley, AH .

CHEMICAL COMMUNICATIONS, 1997, (21) :2095-2096

[8]

CHIVERS T, 2009, ANGEW CHEM, V121, P3069

[9] Ligand-Stabilized Chalcogen Dications [J].

Chivers, Tristram ;

Konu, Jari .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2009, 48 (17) :3025-3027

[10] SYNTHESIS AND REACTION CHEMISTRY OF STABLE 2-COORDINATE PHOSPHORUS CATIONS (PHOSPHENIUM IONS) [J].

COWLEY, AH ;

KEMP, RA .

CHEMICAL REVIEWS, 1985, 85 (05) :367-382

← 1 2 3 4 5 6 →