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  • Supramolecular polymorphism of the 1:1 molecular salt (adamantane-1-carboxylate-3,5,7-tricarboxylic acid)·(hexamethylenetetraminium). A "failed" crystal engineering attempt.

Supramolecular polymorphism of the 1:1 molecular salt (adamantane-1-carboxylate-3,5,7-tricarboxylic acid)·(hexamethylenetetraminium). A "failed" crystal engineering attempt.

Chemical communications (Cambridge, England) (2011-12-03)
Andreas Lemmerer, Joel Bernstein, Mark A Spackman
RESUMEN

The tetrahedral arrangement of hydrogen bonding donor and acceptor groups is used to rationalise the design of a diamondoid network; however, a single proton transfer renders the four sites inequivalent, and results in two polymorphs of the title molecular salt utilizing similar intermolecular synthons.

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Sigma-Aldrich
Hexamethylenetetramine, ACS reagent, ≥99.0%
Sigma-Aldrich
Hexamethylenetetramine, ReagentPlus®, 99%
Sigma-Aldrich
Hexamethylenetetramine, puriss. p.a., reag. Ph. Eur., ≥99.5% (calc. to the dried substance)
Sigma-Aldrich
Hexamethylenetetramine, meets analytical specification of Ph. Eur., BP, 99-100.5% (calc. to the dried substance)
Sigma-Aldrich
Hexamethylenetetramine, JIS special grade, ≥99.0%
Methenamine, European Pharmacopoeia (EP) Reference Standard
Sigma-Aldrich
Hexamethylenetetramine, SAJ first grade, ≥98.5%