Titanium η1-pyrrolyl complexes:: Electronic and structural characteristics imposed by the N,N-di(pyrrolyl-α-methyl)-N-methylamine (dpma) ligand

被引：52

作者：

Harris, SA ^{[1
]}

Ciszewski, JT ^{[1
]}

Odom, AL ^{[1
]}

机构：

[1] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA

来源：

INORGANIC CHEMISTRY | 2001年 / 40卷 / 09期

关键词：

D O I：

10.1021/ic001238r

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new tridentate pyrrolyl-based ligand (dpma) has been utilized in the syntheses of two unusual titanium complexes. The trigonal bipyramidal species allow direct structural comparison between dialkylamido, pyrrolyl, and amine ligands within the same coordination sphere. Pyrrolyl ligands have greatly reduced π-donating ability relative to dialkylamides, which leads to Ti-N(pyrrolyl) distances that are ∼0.14 Å longer than the dimethylamido substituents. Reduced π-donation relative to dialkylamido by the pyrrolyl substituents seems to result in enhanced Lewis acidity for dpma derivatives.

引用

页码：1987 / 1988

页数：2

共 28 条

[1]

[Anonymous], COMPREHENSIVE ORGANO

[2] TRIS(1,2-DIMETHOXYETHANE)LITHIUM MU-CHLORO-MU-OXO-BIS[CHLORO(PENTAMETHYLCYCLOPENTADIENYL)(1-PYRROLYL)ZIRCONATE(IV)] DIMETHOXYETHANE SOLVATE, [LI(C4H10O2)3][ZR2CL3O(C4H4N)2(C10H15)2].C4H10O2 [J].

ATWOOD, JL ;

ROGERS, RD ;

BYNUM, RV .

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 1984, 40 (NOV) :1812-1814

[3] Porphyrinogen tetraanion functioning as a polymetallic assembler:: nickel-meso-octaethylporphyrinogen binding four transition metal ions at the periphery [J].

Bonomo, L ;

Solari, E ;

Martin, G ;

Scopelliti, R ;

Floriani, C .

CHEMICAL COMMUNICATIONS, 1999, (22) :2319-2320

[4] METALLO-ORGANIC COMPOUNDS CONTAINING METAL-NITROGEN BONDS .5. DIALKYLAMIDOPYRROLYL- AND DIALKYLAMIDO-2,5-DIMETHYL-PYRROLYLTITANIUM COMPOUNDS [J].

BRADLEY, DC ;

CHIVERS, KJ .

JOURNAL OF THE CHEMICAL SOCIETY A -INORGANIC PHYSICAL THEORETICAL, 1968, (08) :1967-&

[5]

Bynum R. V., 1980, INORG CHEM, V19, P2368

[6] PYRROLYL COMPLEXES OF THE EARLY TRANSITION-METALS .3. PREPARATION AND CRYSTAL-STRUCTURE OF (ETA-5-C5H5)2ZR(ETA-1-NC4H2ME2)2 AND ZR(ETA-1-NC4H2ME2)4 [J].

BYNUM, RV ;

ZHANG, HM ;

HUNTER, WE ;

ATWOOD, JL .

CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 1986, 64 (07) :1304-1307

[7]

CISZEWSKI JT, UNPUB

[8] Recent advances in the chemistry of scandium [J].

Cotton, SA .

POLYHEDRON, 1999, 18 (12) :1691-1715

[9] Intramolecularly stabilized metal amides: 2-(dimethylaminomethyl)pyrrolyl complexes of titanium(III), vanadium(III), chromium(III), cobalt(II) and nickel(II) [J].

Drevs, H ;

Schmeisser, A ;

Hartung, H ;

Baumeister, U .

CHEMISCHE BERICHTE, 1996, 129 (07) :853-857

[10] The activation of η5-pyrrole complexes toward nucleophilic attack [J].

DuBois, MR .

COORDINATION CHEMISTRY REVIEWS, 1998, 174 :191-205

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