Mesomerization of S4-Symmetric Tetrahedral Chelate Complex [In4(L3)4]: First-Time Monitored by Temperature-Dependent 1H NMR Spectroscopy

被引：26

作者：

Saalfrank, Rolf W. ^{[1
]}

Maid, Harald ^{[2
]}

Scheurer, Andreas ^{[1
]}

Puchta, Ralph ^{[1
]}

Bauer, Walter ^{[2
]}

机构：

[1] Univ Erlangen Nurnberg, Dept Chem & Pharm, D-91058 Erlangen, Germany

[2] Univ Erlangen Nurnberg, Dept Chem & Pharm, D-91054 Erlangen, Germany

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2010年 / 19期

关键词：

Bailar twist; NMR spectroscopy; Density functional calculations; Indium; N; O ligands; Supramolecular chemistry; EFFECTIVE CORE POTENTIALS; MOLECULAR CALCULATIONS; CHEMISTRY; HOST; DYNAMICS; METALLODENDRIMERS; ENANTIOMERISATION; MECHANISM; IRON; CAGE;

D O I：

10.1002/ejic.201000295

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

VT H-1 NMR spectroscopy proved that a non-dissociative and reversible mesomerization process links the tetranuclear indium(III) complexes meso-(Delta,Delta,Lambda,Lambda)(P,P,M,M)-3 and meso(Lambda,Lambda,Delta,Delta)(M,M,P,P)-3'. During this process four tandem Bailar twists, resulting in the (Delta)/(Lambda) isomerization at the indium centers, and the (P)/(M) inversion of the four coordinating face-centered, helical ligands (L-3)(3-) are involved. In addition, gas-phase DFT calculations (B3LYP/LANL2DZp) revealed a C-1-symmetric transition state (+21.9 kcal mol(-1)) for the mesomerization mechanism which connects 3 and 3'.

引用

页码：2903 / 2906

页数：4

共 44 条

[1] Long-range stereocontrol in the self-assembly of two-nanometer-dimensioned triple-stranded dinuclear helicates [J].

Albrecht, M ;

Janser, I ;

Houjou, H ;

Fröhlich, R .

CHEMISTRY-A EUROPEAN JOURNAL, 2004, 10 (11) :2839-2850

[2] Symmetry driven self-assembly of metallo-supramolecular architectures [J].

Albrecht, Markus ;

Froehlich, Roland .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 2007, 80 (05) :797-808

[3] Poly beta-diketones:: Prime ligands to generate supramolecular metalloclusters [J].

Aromi, Guillem ;

Gamez, Patrick ;

Reedijk, Jan .

COORDINATION CHEMISTRY REVIEWS, 2008, 252 (8-9) :964-989

[4] Mixed-metal (platinum, palladium), mixed-pyrimidine (uracil, cytosine) self-assembling metallacalix[n]arenes:: Dynamic combinatorial chemistry with nucleobases and metal species [J].

Bardaji, Elisa Gil ;

Freisinger, Eva ;

Costisella, Burkhard ;

Schalley, Christoph A. ;

Bruening, Wolfgang ;

Sabat, Michal ;

Lippert, Bernhard .

CHEMISTRY-A EUROPEAN JOURNAL, 2007, 13 (21) :6019-6039

[5] Self-assembly dynamics of a cylindrical capsule monitored by fluorescence resonance energy transfer [J].

Barrett, Elizabeth S. ;

Dale, Trevor J. ;

Rebek, Julius, Jr. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (28) :8818-8824

[6] DENSITY-FUNCTIONAL THERMOCHEMISTRY .3. THE ROLE OF EXACT EXCHANGE [J].

BECKE, AD .

JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (07) :5648-5652

[7] Coordination number incommensurate cluster formation.: 8.: Dynamic isomerization of a supramolecular tetrahedral M4L6 cluster [J].

Beissel, T ;

Powers, RE ;

Parac, TN ;

Raymond, KN .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (17) :4200-4206

[8] Assembly of a Tetranuclear Host with a Tris(benzene-o-dithiolato) Ligand [J].

Birkmann, Birgit ;

Froehlich, Roland ;

Hahn, F. Ekkehardt .

CHEMISTRY-A EUROPEAN JOURNAL, 2009, 15 (37) :9325-9329

[9]

Braun S., 1996, 100 and More Basic NMR Experiments - A Practical Course

[10] Isolated heterometallic Cr7Ni rings grafted on Au(111) surface [J].

Corradini, Valdis ;

Biagi, Roberto ;

del Pennino, Umberto ;

De Renzi, Valentina ;

Gambardella, Alessandro ;

Affronte, Marco ;

Muryn, Christopher A. ;

Timco, Grigore A. ;

Winpenny, Richard E. P. .

INORGANIC CHEMISTRY, 2007, 46 (12) :4937-4943

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