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Article
Chemistry of 2,4,6-Trimercapto-1,3,5-triazine (TMT): Acid Dissociation Constants and Group 2 Complexes
Inorganic Chemistry
  • Kevin R. Henke
  • Aaron R. Hutchison, Cedarville University
  • Matthew K. Krepps
  • Sean Parkin
  • David A. Atwood
Document Type
Article
Publication Date
7-13-2001
Abstract
The acid dissociation constants of 2,4,6-trimercaptotriazine (H3TMT, 1) were determined and now can be employed in the preparation of complexes having specific M−TMT (M = divalent metal; TMT = 2,4,6-trimercapto-1,3,5-triazinide, C3N3S33-) ratios. For example, the combination of H3TMT (1) with Mg(OH)2 at pH 7.1 leads to the crystallization of Mg(H2TMT)2·6H2O (4). With the appropriate pH adjustment, the contiguous series of compounds Ba3(TMT)2·8H2O (3), Ba(H2TMT)2·7H2O (5), and BaHTMT·3H2O (6) can be isolated. The compounds were characterized by mp, IR, TGA, elemental analysis, and, in the cases of 4, 5, and 6, crystallography. The comparison of 4 with 5 and 6 offers an interesting view of the difference in hard and soft bonding with TMT. In the saltlike Mg structure of 4, there is extensive hydrogen bonding, but in the Ba structures, 5 and 6, covalent Ba−S bonding dominates.
Disciplines
Citation Information
Atwood, D. A., Henke, K. R., Hutchison, A. R. , Krepps, M. K. , & Parkin, S. (2001). Chemistry of 2,4,6-Trimercapto-1,3,5-triazine (TMT): Acid Dissociation Constants and Group 2 Complexes. Inorganic Chemistry, 40 (17), 4443-4447.