Supramolecular synthon polymorphism in 2 : 1 co-crystal of 4-hydroxybenzoic acid and 2,3,5,6-tetramethylpyrazine.

Supramolecular synthon polymorphism in 2 : 1 co-crystal of 4-hydroxybenzoic acid and 2,3,5,6-tetramethylpyrazine.

Chemical communications (Cambridge, England) (2007-09-12)

B R Sreekanth, Peddy Vishweshwar, K Vyas

RÉSUMÉ

Co-crystals of 4-hydroxybenzoic acid and 2,3,5,6-tetramethylpyrazine (2 : 1) exhibit the first supramolecular synthon polymorphism in a co-crystal; metastable anti-hierarchic polymorph I converts to stable hierarchic form II.

MATÉRIAUX

Référence du produit

Marque

Description du produit

183938

Sigma-Aldrich

2,3,5,6-tétraméthylpyrazine, 98%