Syntheses and some properties of dioxygenyl fluorometallate salts

Nitrosyl and dioxygenyl cations and their salts—Similar but further investigation needed

“…O 2 AsF 6 and O 2 SbF 6 could be prepared using a photochemical-reaction exposure of O 2 /F 2 and appropriate pentafluoride mixture to daylight [16]. Other synthetic paths involve reactions between O 2 F 2 and corresponding Lewis acid, thermal syntheses by the reaction of some pentafluorides with O 2 /F 2 mixture [17] or with OF 2 under pressure [14,18]. No evidence for O 2 F + or OF + salts has been offered [19], although both cations are well-established in the gas phase [19,20] and proposed as mechanistic intermediates [21].…”

A low-temperature study of the magnetic properties of the molecular cations O2+, Br2+, and I2+

“…In addition, the high-pressure synthesis of dioxygenyl salts from 02-F2 mixtures and either metal fluorides or the metal itself (20,22,24) in metal reactors has often resulted in materials with ferromagnetic contamination (19,23). While monel impurities can be recognized by the characteristic Curie temperature of 335 K and corrections have been attempted (23) in magnetic susceptibility studies, such materials remain suspect where the possibility of weak antiferromagnetic ordering exists.…”

Gold oxyfluorides, Au(OF)n (n = 1–6): novel superhalogens with oxyfluoride ligands

“…19 However, later quantum chemical investigation showed that the synthesis of AuF 7 is highly improbable, 20 albeit it may exist in the form of (AuF 5 )F 2 complex. 24 The complexes of Au with CN pseudohalogen, Au(CN) n (n r 6), have been systematically studied by Samanta et al 25 They found that Au(CN) n complexes behave as superhalogens for n Z 2 if CN ligands bind dissociatively to the Au core. 23 This value is likely to be equivalent to the vertical detachment energy (VDE) of its anion AuF 6 À , which does exist.…”