Topic
Aquation
About: Aquation is a research topic. Over the lifetime, 1443 publications have been published within this topic receiving 17507 citations.
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19 citations
TL;DR: In this article, the kinetics of aquation of bis(2,2′; 6′,2″-terpyridyl)iron(II), [Fe(terpy)2]2+, have been examined in aqueous solution, and a mechanism consistent with the observed pH-rate profile was proposed.
Abstract: The kinetics of aquation of bis(2,2′;6′,2″-terpyridyl)iron(II), [Fe(terpy)2]2+, have been examined in aqueous solution, and a mechanism consistent with the observed pH–rate profile proposed. Activation parameters for fission of the first iron–nitrogen bond have been determined and compared with those for related complexes. The rate law for reaction of [Fe(terpy)2]2+ with cyanide ion is as in equation (i). Activation parameters for the –d[Fe(terpy)22+]/dt=k9+k10[CN–][Fe(terpy)22+](i), k10 path, which is the dominant reaction route, are compared with those for analogous second-order reactions of similar iron(II) complexes with cyanide ion. Solvatochromic behaviour is reported for the [Fe(terpy)(CN)3]– anion, the primary product of the reaction of [Fe(terpy)2]2+ with cyanide.
18 citations
18 citations
TL;DR: The first chloride ion in dichlorobis-(ethylenediamine)cobalt(III) ions [Co en2 C12]- was characterized by retention of configuration in the cis ion and extensive isomerization in the trans ion.
Abstract: THE aquation of the first chloride ion in dichlorobis-(ethylenediamine)cobalt(III) ions [Co en2 C12]+ is characterized by retention of configuration in the cis1 and extensive isomerization in the trans isomer2. A similar pattern has now been observed for the aquation of the dichloro triethylenetetramine cobalt (III) isomers cis α, cis β and trans [Co trien Cl2]+ (Fig. 1). The cis isomers lost one Cl− at the same rate as the cis chloroaquo ions were formed and as mutarotation occurred (Table 1 (a) (rates c, s and p respectively)). These results implied full retention of configuration during the aquation process and the retention was verified by converting the chloroaquo products to the carbonate isomers with NaHCO3 (ref. 3). The rotations observed, cis α, [M]D = +4,700° cis β, [M]D= −3,000°, agreed with those obtained for the fully resolved carbonate ions, α, [M]D= +4,730°; β,[M]D= −2,990°.
18 citations
TL;DR: Rate data for the complexation reactions of the phosphonate ligands with the dichloroplatinum complex are consistent with a mechanism in which a monodentate complex is formed initially through rate-limiting aquation process of the platinum complex, followed by a rapid chelation.
18 citations