Absence of Hydronium Ion Formation in a Ternary Crown Ether·Mineral Acid·Water Complex:  X-ray Crystal Structure of 1,8-Oxybis(ethyleneoxyethyleneoxy)anthracene-9,10-dione·HNO<sub>3</sub>·3H<sub>2</sub>O YoungVictor G. SykesAndrew G. 1998 Absence of Hydronium Ion Formation in a Ternary Crown Ether·Mineral Acid·Water Complex:  X-ray Crystal Structure of 1,8-Oxybis(ethyleneoxyethyleneoxy)anthracene-9,10-dione·HNO<sub>3</sub>·3H<sub>2</sub>O