Figure 1
H-thiamine(BF4)2 drawn with 50% probability displacement ellipsoids. Note that the BF4− anions are associated to thiamine at the two `anion holes' through two types of bridging interactions, i.e. C2—H⋯BF4−⋯pyrimidinium and N4′1—H⋯BF4−⋯thiazolium. Broken lines denote hydrogen bonds. |