The Indirect Assessment of a Catalytic Path

8-Mercaptoquinoline as an Analytical Reagent. Dissociation and Metal Chelate Formation Constants.

“…A third factor is steric hindrance, introduced by suitably located substituents in the ligand, to which Ni(II) is usually more susceptible than Zn(II). For example, in complexes (14,16).…”

“…A rapid qualitative test for aromatic iodine compounds (14) suggested the extension of the formation of iodobenzene diacetates (2,11,12,18) with commercial, 40% peracetic acid to both characterization and analysis of iodinesubstituted benzenes. The diacetates formed were…”

Complexation of nickel(II) by ethylenediamine investigated by means of electrospray ionization mass spectrometry

“…Several researchers have investigated Ni(II) complexes of ethylenediamine, N-alkyl-ethylenediamines, N,N -dialkylethylenediamines, and C-substituted ethylenediamines in the condensed phase [29][30][31][32][33][34]. The interest was focused on the examination of the effects of the substituents on the stabilities of the complexes as well as the determination of magnetic properties of the complexes formed.…”

Catalytic Proficiency: The Unusual Case of OMP Decarboxylase

“…In each of the reactions mentioned above, the cofactor is an effective catalyst by itself, so that the catalytic burden borne by the protein is relatively modest. Thus, CO 2 is released from oxaloacetate by divalent cations (41,42,43), pyruvate is decarboxylated by thiamine pyrophosphate (44), and alanine is decarboxylated in the presence of pyridoxal phosphate (20). PLP alone has been shown to enhance the rate of arginine decarboxylation by a factor of 2 ϫ 10 11 , leaving the protein to contribute a relatively modest factor of ϳ10 8 to the reaction rate (19,20).…”