✦ LIBER ✦

Colorimetric determination of ligands by the effect of their cobalt(II) complexes on redox indicators

✍ Scribed by Jacob S. Hanker; Michael D. Sulkin; Michael Gilman; Arnold M. Seligman

Publisher: Elsevier Science
Year: 1963
Tongue: English
Weight: 456 KB
Volume: 28
Category: Article
ISSN: 0003-2670
DOI: 10.1016/s0003-2670(00)87212-8

No coin nor oath required. For personal study only.

✦ Synopsis

In a previous publication', a novel calorimetric method for the determination of ligancls based on the change in oxidation potential that occurs on coordination was elucidated. The method described depends on the color produced upon oxidation of a redox indicator such as o-dianisidine by a cobalt(II1) complex. It was pointed out, however, that ethylenediamine and cyanide which form cobalt(I1) complexes that are particularly good reducing agents213 could not be determined by the method.

In this paper, ethylenediamine and cyanide are determined by the ability of their cobalt(I1) complexes to reduce a tetrazolium salt to the colored formazan.

📜 SIMILAR VOLUMES

Effect of Deprotonation of a Benzimidazo

Effect of Deprotonation of a Benzimidazolyl Ligand on the Redox Potential and the Structures of Mononuclear Ruthenium(II) Complexes

✍ Hongfei Sun; Mei Wang; Kun Jin; Chengbing Ma; Rong Zhang; Licheng Sun 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 122 KB 👁 1 views

A comparison of cis- and trans-cobalt(II

A comparison of cis- and trans-cobalt(III) complexes with phosphorus and arsenic ligands; the effect of stereochemistry on redox and spectroscopic properties

✍ William Levason; Stephen R. Preece; Christopher S. Frampton 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 425 KB

Effect of the polymeric ligand on electr

Effect of the polymeric ligand on electron-transfer reactions: Iron(II) reduction of cis-chloropoly-4-vinylpyridinebis(ethylenediamine)-cobalt(III) complexes

✍ Kurimura, Yoshimi ;Yamada, Kazuo ;Kaneko, Masao ;Tsuchida, Eishun 📂 Article 📅 1971 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 345 KB

Formation and Dissociation of Tetrahedra

Formation and Dissociation of Tetrahedral Nickel(II) and Cobalt(II) Complexes of ‘Dithioimidodiphosphato’ Ligands, Measurement of Kinetically Determined Stability Constants, and Kinetic Investigations of the Rapid Formation of Tetrahedral Bis(ligand)copper(II) Complexes and Their Rates of Reduction to Trinuclear Copper(I) Species

✍ Peter Moore; William Errington; Satindra P. Sangha 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 German ⚖ 154 KB 👁 1 views

## Abstract The stopped‐flow technique was used to measure the rates of formation and dissociation of tetrahedral [ML~2~] complexes (M^2+^=Ni^2+^ or Co^2+^) of four bidentate S~2~‐donor ‘dithioimidodiphosphato’ ligands L^−^ (HL=[R^1^R^2^P(S)]NH[P(S)R^3^R^4^], R^1^ to R^4^=alkyl) at 25.0° in MeOH/

Antibacterial copper(II) complexes of 1,

Antibacterial copper(II) complexes of 1,1′-symmetric ferrocene-derived Schiff-base ligands: studies of the effect of anions on their antibacterial properties

✍ Zahid H. Chohan 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 104 KB 👁 2 views

1, 5- and 4, 6-Benzo[h]naphthyridines an

1, 5- and 4, 6-Benzo[h]naphthyridines and stability constants of their complexes with nickel(II), cobalt(II), copper(II) and cadmium(II) determined by the potentiometric method

✍ Natalia Zelichowicz; Wanda Sliwa; Alicja Gaudyn 📂 Article 📅 1987 🏛 Springer 🌐 English ⚖ 231 KB