Xenon Trioxide Coordination Complexes of Crown Ethers: (CH2CH2O)4XeO3 and Xe(VI) Hydrates, [(CH2CH2O)6(H2O)XeO3]⋅ H2O and [(CH2CH2O)6(H2O)XeO3]2 ⋅ 2H2O ⋅ HF

Abstract Following on our report of the first coordination complex between a noble‐gas compound and a crown ether, (CH 2 CH 2 O) 5 XeO 3 , the reactions and structures of XeO 3 complexes with 12‐crown‐4 and 18‐crown‐6 were investigated. The reactions of 12‐crown‐4 and 18‐crown‐6 with XeO 3 in dilute aqueous HF solutions yielded (CH 2 CH 2 O) 4 XeO 3 and [(CH 2 CH 2 O) 6 (H 2 O)XeO 3 ] 2 ⋅ 2H 2 O ⋅ HF, whereas reactions of 12‐crown‐4 and …