An infinite ladder structure of alternating, fused K 2 N 2 rhomboids and KN 2 triangles: synthesis and crystallographic characterisation of benzotriazolatopotassium·HMPA (HMPA = hexamethylphosphoric triamide)

Benzotriazolatopotassium·HMPA, a rare example of an alkali metal benzotriazole derivative, has been synthesised and shown by an X-ray diffraction study to have an intricate, polymeric ladder arrangement made up of alternating, fused K2N2 rhomboids and KN2 triangles.