Recent advances in donor-acceptor (DA) cyclopropanes

Photoacoustic and related photothermal techniques

Complexing agents of the type: (HOOCCH2)(2=N(CH2))n N = (CH2COOH)2 with n-values from 2–8 have been investigated. The stability constants of the 1:1 complexes of Ca2+, Cd2+ and Hg2+ have been determined for nearly the whole series of these complexons and a few values have been obtained also for the complexes of Mg2+, Sr2+, Ba2+ and Go2+. There is generally a strong decrease in complex stability when n is increased from 2 t o 4, where an almost constant value is reached which does not alter anymore to an appreciable extent hy a further increase of the chain length 11. The mercury complexes behave exceptionally. Replacement of one or two CH2-groups in the chain connecting the two nitrogens by O, S, and N(CH2) increases the complex stability to a great extent if new 5-membered chelate rings can be formed by coordination of this heteroatom.

Komplexone XXIX. Ein grosser Chelateffekt besonderer Art

Viscosity B-coefficients and standard partial molar volumes of amino acids, and their roles in interpreting the protein (enzyme) stabilization

N-aryl salicylaldimine complexes: Infrared and PMR spectra of the ligands and vibrational frequencies of their metal(II) chelates

Infra-red absorption spectra of metal chelates derived from 8-hydroxyquinoline, 2-methyl-8-hydroxyquinoline, and 4-methyl-8-hydroxyquinoline

Copper (II) and Nickel (II) N-(n-alkyl)salicylaldimine Chelates

SYNTHESIS OF 2-(o-HYDROXYPHENYL)BENZOTHIAZOLE AND OF 2-(o-HYDROXYPHENYL)BENZOTHIAZOLINE

Heats and Entropies of Reaction of Metal Ions with Ethylenediaminetetraacetate

Structure and Behavior of Organic Analytical Reagents. I. The Calvin—Bjerrum Method for Determination of Chelate Stability

Robert G. Charles

Papers

Infra-red absorption spectra of metal chelates derived from 8-hydroxyquinoline, 2-methyl-8-hydroxyquinoline, and 4-methyl-8-hydroxyquinoline

Copper (II) and Nickel (II) N-(n-alkyl)salicylaldimine Chelates

SYNTHESIS OF 2-(o-HYDROXYPHENYL)BENZOTHIAZOLE AND OF 2-(o-HYDROXYPHENYL)BENZOTHIAZOLINE

Heats and Entropies of Reaction of Metal Ions with Ethylenediaminetetraacetate

Structure and Behavior of Organic Analytical Reagents. I. The Calvin—Bjerrum Method for Determination of Chelate Stability