117950-83-1

Basic information

• Product Name: seleninyl bis(trifluorometanesulfonate)
• Synonyms: seleninyl bis(trifluorometanesulfonate)
• CAS NO: 117950-83-1
• Molecular Weight: 393.1
• Mol File: 117950-83-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: seleninyl bis(trifluorometanesulfonate)(CAS DataBase Reference)
• NIST Chemistry Reference: seleninyl bis(trifluorometanesulfonate)(117950-83-1)
• EPA Substance Registry System: seleninyl bis(trifluorometanesulfonate)(117950-83-1)

Safety Data

• Hazardous Substances Data: 117950-83-1(Hazardous Substances Data)

Upstream product

• 358-23-6 trifluoromethylsulfonic anhydride 

Relevant articles and documents

PREPARATIONS, X-RAY CRYSTAL STRUCTURES, AND SPECTRAL STUDIES OF SELENINYL BIS(TRIFLUOROMETHANESULFONATE) AND SELENINYL BIS(ACETATE)

The compounds seleninyl bis(trifluorometanesulphonate) (1) and seleninyl bis(acetate) (2) have been prepared and characterized by elemental analysis, ir and Raman spectroscopy, and X-ray crystallography.Crystals of 1 are monoclinic, space group P21/n with a = 12.735(1) Angstroem, b = 5.163(4) Angstroem, c = 16.133(2) Angstroem, β = 96.426(8)deg, U = 1054 Angsroem3, Dx = 2.48 g cm-3 for Z = 4, R = 0.038 for 1754 observed reflections with I>/=2.5?(I).Those of 2 are orthorhombic, space group Pcab with a = 6.845(3) Angstroem, b = 8.992(2) Angstroem, c = 23.560(9) Angstroem, U = 1450 Angsrtoem3, Dx= 1.95 g cm-3 for Z = 8, R = 0.074 fore 1073 observed reflections with I>/=3.0?(I).The primary geometry of the Se atom in SeO(O3SCF3)2 is AX3E with a Se=O distance of 1.571(3) Angstroem and Se-O bond lengths to the CF3SO3 ligands of 1.902(3) and 1.922(3) Angstroem.Completing the overall coordination geometry of the Se atom are 2 intramolecular and 4 intermolecular Se...O contacts which are less than van der Waals limits.The overall coordination geometry is somewhat irregular since the two triflate anions are significantly differently arranged with respect to the SeO3E tetrahedron.The crystal packing consists of layers of interacting molecules.In 2 there is some disorder.However, the major arrangement of the molecule has Se=O and Se-O(1), Se-O(3) distances to the acetate ligands of length 1.575(9), 1.847(7), and 1.831(8) Angstroem respectively.The overall geometry of the Se atom in this compound is completed by two intramolecular secondary Se...O contacts involving the second O atoms of both acetates and two intermolecular contacts involving the seleninyl oxygen atom and atom O(2) of an acetate group in two different symmetry related molecules.Overall, the crystal packing consists of essentially centrosymmetric dimeric units linked together through Se=O-Se bridges.A 1:2 adduct of 1 with pyridine has also been prepared and characterised.