- 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
PMID22134131
ABSTRACT
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.
MATERIALS
Product Number
Brand
Product Description
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)
Methenamine, European Pharmacopoeia (EP) Reference Standard