✦ LIBER ✦

13C NMR studies of polyaminocarboxylate complexes of Tl(III)

✍ Scribed by G. Anderegg; K. Popov; P. S. Pregosin

Publisher: John Wiley and Sons
Year: 1987
Tongue: English
Weight: 287 KB
Volume: 25
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260250120

No coin nor oath required. For personal study only.

✦ Synopsis

The 13C NMR characteristics of the polyaminocarboxylate ligands EDTA ~(H0,CCH2)2NCHzCHzN(CH,C0,H),I, DTPA [(H02CCH,)zNCH2CH,N(CHzCOzH)CH,CH2N(CHzN(CHzCOzH)z and NTA [N(CH,C0,H)3] and their Tl(II1) complexes are reported. The pH dependence of the 13C shifts of the ligands is helpful in understanding the 13C coordination chemical shifts, A6, but not the thallium4arbon coupling constants J(20?1, 13C), which vary markedly for no apparent reason. The anion Tl(DTPA-5H)'-contains three non-equivalent coordinated carboxyl functions and a suggestion is made to account for this lower symmetry. KEY WORDS "C NMR TI (111) complexes of EDTA, DTPA, NTA zOsTI, 13C coupling constants Coordination chemical shifts

📜 SIMILAR VOLUMES

Study of complexation tendencies of Cr(I

Study of complexation tendencies of Cr(III) with polyaminocarboxylic acids

✍ A.C.P. Baptista; J. Felcman 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 65 KB

Determination of polyaminocarboxylate li

Determination of polyaminocarboxylate ligand denticity by 13C NMR paramagnetic line broadening

✍ K. Popov; A. Vendilo; N. Djatlova 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 246 KB

## Abstract The ^13^C NMR characteristics of sodium acetate and complexes of ethylenediaminetetraacetic acid (EDTA, H~4~edta) with La^3+^ and VO~2~^+^ in the presence of the paramagnetic relaxant [Gd(H~2~O)~__n__~ edta]^−^ are reported. The observed selective paramagnetic line broadening of the unc

13C NMR studies of some complex natural

13C NMR studies of some complex natural oxygen heterocycles. V—13C NMR spectra of furanoflavones

✍ S. C. Gupta; F. P. Singh; I. B. Cook; B. Ternai 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 268 KB

## Abstract ^13^C NMR spectra for a number of furanoflavones are presented and analysed. The effects of various substituents are discussed.

NMR studies of macrocylic lanthanide(III

NMR studies of macrocylic lanthanide(III) complexes

✍ Silvio Aime; Mauro Botta; Giuseppe Ermondi; Enzo Terreno 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 98 KB

Study of complexes of Al(III) with polya

Study of complexes of Al(III) with polyaminocarboxylic acids and its tendency of hydrolysis.

✍ S. Bendelá; J. Felcman 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 76 KB

13C NMR studies of fluoroflavones

✍ Amar Habsaoui; Jean-Claude Wallet; Emile M. Gaydou 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 177 KB 👁 2 views

13C NMR chemical shifts were measured in for Ñuorocarbonyl compounds. Sulfonic DMSO-d 6 derivatives display 4J(C,F) coupling constants for carbonyl groups which are also obtained from non-sulfonic derivatives when they are recorded in acidic solution.