Bis(trifluoromethyl)trioxide: First Structure of a Straight‐Chain Trioxide

Abstract

A skew structure with trans orientation of the two CF3 groups and with an OOOC dihedral angle of 96° describes the trioxide CF3OOOCF3 (see picture). The OO bond lengths are 1.452(5) (gas phase) and 1.437(2) Å (crystal).

The Crystal Structure of a Phosphite Ozonide, C2H5C(CH2O)3PO3

“…The OϪO bond lengths compare nicely with those in F 3 ϪOϪOϪOϪCF 3 [143.7(2) crystal, 145.2(5) gas], [28] but not so well with 9tert-butyl-10-methylanthracene 9,10-ozonide [136.1(6) and 142.8 (6) pm]. The OϪO bond lengths of 146 pm indicate the single-bond character of these bonds, in contrast to the bond lengths of 127 pm in free ozone.…”

Fluorocarbon oxy and peroxy radicals

“…As precursors for fluorocarbon peroxy and oxy radicals the trioxides ROOOR 0 , R; trioxides the members with R ¼ CF 3 CðOÞ and all asymmetric ones are unknown. By analogy with the peroxides (see below) the stability of the three established species [48][49][50][51][52][53][54] decreases in the order…”

“…The mechanism comprises the following reactions: [48,49]. Vibrational [48,49,[131][132][133], NMR [48,49], and mass spectra [48,49] are known and recently it was structurally characterised in an X-ray and gas electron diffraction study [51].…”

The Structural Chemistry of Acyclic Organic Peroxides

“…Preliminary investigations show that alkyl hydrotrioxides are labile compounds that share several chemical properties with the alkyl hydroperoxides. Bis(trifluormethyl) trioxide (62), on the other hand, has been prepared from hexafluoroacetone, F 2 and O 2 on a 1.2 g scale 194 . Trioxide 62 has a boiling point of −16 • C and decomposes at 20 • C. It has been investigated by X-ray diffraction at −170 • C and shows marginal distortion from C 2 symmetry in the solid state ( Figure 28).…”