𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Coordination Arrays: Tetranuclear Cobalt(II) Complexes with [2 × 2]-Grid Structure

✍ Scribed by Dr. Garry S. Hanan; Dr. Dirk Volkmer; Dr. Ulrich S. Schubert; Prof. Dr. Jean-Marie Lehn; Gerhard Baum; Prof. Dr. Dieter Fenske

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
523 KB
Volume
36
Category
Article
ISSN
0044-8249

No coin nor oath required. For personal study only.

✦ Synopsis

Scheme 2. Schematic representation of the uptake of K + ions by 3 based on molecular mechanics calculations.

Experimental Section

3: A suspension of p-rert-butyl-calix[4]arene (451 mg, 0.70 mmol) and potassium carbonate (480 mg, 3.5 mmol) in dry acetonitrile (100 mL) was stirred under nitrogen. After 2 h at room temperature, 1 (I g, 0.70 mmol) was added and the reaction mixture brought to reflux for five days. The solvent was then removed in vacuo and the solid suspended in a 1 : 1 ethanol-water mixture. The suspension was heated to reflux overnight and hot filtered. The crude mixture was then dissolved in chloroform (50 mL) and the solution carefully paper filtered to yield a clear solution to which acetone (40 mL) was added. Filtration of the microcrystalline material obtained after the solution had been allow to stand for a few hours, followed by its drying in vacuo yielded 3 (500 mg) as an analytically pure product (51 "A). 'H NMR

📜 SIMILAR VOLUMES

Two-Level Self-Organisation of Arrays of
Two-Level Self-Organisation of Arrays of [2×2] Grid-Type Tetranuclear Metal Complexes by Hydrogen Bonding
✍ Esther Breuning; Ulrich Ziener; Jean-Marie Lehn; Elina Wegelius; Kari Rissanen 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 479 KB 👁 1 views

Here we report on the synthesis and characterisation of four new complexes of the [2×2] M 4 II grid-type (M = Co, Fe, Zn) with oligopyridine-derived ligands. The presence of aminopyrazine and aminopyrimidine moieties at the edge of the ligands potentially enables the formation of infinite hydrogen-b

Self-Assembly, Structure and Solution Dy
Self-Assembly, Structure and Solution Dynamics of Tetranuclear Zn2+ Hydrazone [2×2] Grid-Type Complexes
✍ Mihail Barboiu; Mario Ruben; Georges Blasen; Nathalie Kyritsakas; Elizabeth Chac 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 179 KB

## Abstract We describe the self‐assembly processes as well as the structural and physico‐chemical properties of [2×2]Zn^2+^~4~ grid complexes involving the bis‐tridentate ligands **7**–**12**, based on bis(hydrazone)pyrimidine complexation subunits and octahedrally coordinated Zn^2+^ ions. The NMR

Self-Assembly, Structure, and Physical P
Self-Assembly, Structure, and Physical Properties of Tetranuclear ZnII and CoII Complexes of [2 × 2] Grid-Type
✍ Javier Rojo; Francisco J. Romero-Salguero; Jean-Marie Lehn; Gerhard Baum; Dieter 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 394 KB 👁 2 views

The tretrametallic [2 × 2] grid-type complexes 1-4 are orthogonal orientation of the ligand in the complexes which is critical for the formation of ordered monolayers and formed by self-assembly of the bis(tridentate) ligands 5 and 6 with Zn II and Co II cations. They have been characterized extende