𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis and solid state structural analysis of conformers of tetrakis((ethoxycarbonyl)methoxy)tetrathiacalix[4]arene

✍ Scribed by Huriye Akdas; Gilles Mislin; Ernest Graf; Mir Wais Hosseini; André De Cian; Jean Fischer

Publisher
Elsevier Science
Year
1999
Tongue
French
Weight
299 KB
Volume
40
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis

The role of alkaline metal cations in the synthesis and in determining the conformer distribution of tetrakis((ethoxycarbonyl)methoxy)tetrathiacalix[4]arene obtained by treatment of tetrathiacalix [4]arene 1 in acetone by ethyl bromoacetate in the presence of M2CO 3 was systematically investigated. Among the four possible conformers, the cone, partial cone and 1,3-alternate conformers were obtained, purified and structurally characterised by X-ray analysis in the solid state. Although for Li + no tetra substituted derivative was observed, for Na + the cone conformer was exclusively formed while for both K + and Cs + a mixture of partial cone and 1,3-alternate conformers was obtained.

📜 SIMILAR VOLUMES

ChemInform Abstract: Synthesis, Structur
ChemInform Abstract: Synthesis, Structure and Inclusion Properties of distal-Bis{[(5′-methyl-2,2′-bipyridyl)-5-yl]methoxy}tetrathiacalix [4]arene with 1,3-Alternate Conformation.
✍ Tomoe Shimizu; Shofiur Rahman; Zeng Xi; Takehiko Yamato 📂 Article 📅 2009 🏛 John Wiley and Sons ⚖ 16 KB 👁 1 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v

Synthesis and structure of cobalt(II) co
Synthesis and structure of cobalt(II) complexes with hydroxyl derivatives of pyridinecarboxylic acids: Conformation analysis of ligands in the solid state
✍ Boris-Marko Kukovec; Zora Popović; Gordana Pavlović; Maša Rajić Linarić 📂 Article 📅 2008 🏛 Elsevier Science 🌐 English ⚖ 529 KB

Cobalt(II) complexes of 6-hydroxypicolinic acid (6-OHpicH), namely 2 (H 2 O) 2 ] (1) and 2 (4-pic) 2 ]AE4-pic (2), and of 2-hydroxynicotinic acid (2-OHnicH), [Co(2-OHnic) 2 (H 2 O) 2 ] (3) were prepared. The crystal structures of free 6-hydroxypicolinic acid monohydrate 6-OHpicHAEH 2 O (4), and the

Complex of N,N′,N′,N‴-tetrakis[2-dipheny
Complex of N,N′,N′,N‴-tetrakis[2-diphenylphosphorylethyl]-1,4,7,10-tetraazacyclododecane with copper (II) perchlorate. Synthesis, structure, and conformational analysis
✍ M. Yu. Antipin; A. P. Baranov; M. I. Kabachnik; S. A. Pisareva; Yu. M. Polikarpo 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 355 KB 👁 1 views

1,4,7,1O-Tetraazacyclododecane having P-ethylphosphoryl pendant groups on the nitrogen atoms can form a complementary ligand for the Cu cation. It gives rise to a square pyramidal complex of [CuLI2+ compositions, the ligand entering this complex with a slight energy strain. 0 1996 John Wiley & Sons,