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- W2012632972 abstract "The two geometrical isomers of N-rac-trans-[CoCl(Me6[14]diene)NO2]+ (Me6[14]diene = 5,7,7,12,13, 14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene) have been isolated, in which the chloride ligands lies syn or anti to the two chiral NH groups. The syn-isomer (isomer 1) aquates slowly in 0.1 M HNO3 with kaq = 4.8 × 10−4 s−1 at 25°C (ΔH‡ = 75.3 kJ mol−1, ΔS‡298 = −55JK−1 mol−1, while the anti-isomer (isomer 2) aquates very rapidly (t12 < 10 s) at 25°C. These results can be rationalised in terms of the macrocycle folding towards or against the leaving groups in the transition state of the reaction. Steric compression by the gem-dimethyl groups also facilitates rapid hydrolysis of the anti-isomer." @default.
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- W2012632972 title "Aquation rates of the two trans-R,R(S,S)-chloro(5,7,7,12,14,14-hexamethyl-1,4,8,11-tetra-azacyclotetradeca-4,11-diene)nitrocobalt(III) complexes and comments of the aquation rates of macrocyclic complexes of cobalt(III)" @default.
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- W2012632972 doi "https://doi.org/10.1016/s0020-1693(00)90071-9" @default.
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