期刊
CHEMICAL PHYSICS LETTERS
卷 348, 期 5-6, 页码 433-439出版社
ELSEVIER
DOI: 10.1016/S0009-2614(01)01110-1
关键词
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The hydrolysis of M-O-M bridges in binuclear oxyhydroxides of the 3p, 4p and early 3d elements is investigated by quantum chemistry. The reaction enthalpies for the water addition reactions are compared. Hydrolysis of oxygen bridges is found endothemic for the Al-P, Ga-As and Sc-Mn species, but exothermic for the S, Se, Cl and Br species. The hydrolysis of pyrophosphoric acid is unique in displaying the reaction enthalpy, which is closest to zero. This fact is taken to explain why the oligophosphates are utilised in controlling cellular reactions, as the hydrolysis energetics rely entirely on local conditions. (C) 2001 Elsevier Science B.V. All rights reserved.
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