The cation [((CH)N)S] is a sulfonium ion. The S-N distances are 1.612 and 1.675 pm.  The N-S-N angles are 99.6°.  The anion is [FSi(CH)].  It is trigonal bipyramidal with mutually trans fluorides.  The Si-F distances are 176 picometers.  The Si-C distances are 188 pm.