Cogliano and Braude (1) suggested that dialkyl sulfides react with two moles of chloramine to give a series of caspounds having the probable general formula (R2&R%)2, termed a bis(iminodislkylsulfilimimine). On the basis of chemical end mass spactrometric data Appel, Fehlhaber, &ssgen and Schklhorn (2) have proposed the alternative formula R2S(RR)2, that is, a dialkyleulfcme diimine. For the same series of ccsspounds, Yellin and Laughlin (3) have also interpreted Rsmsn, nmr ana infrared spectra in terms of a tetrahedral diimine structure. We have determined the crystal and molecular structure of dimethyl sulfone diimine by X-ray single-crystal techniques and have found a tetrahedral structure as proposed by Appel et al -sndby Yellin andLaughlin. Dr. R. G. Laughlin gave us a crystalline sample of dimethyl sulfone diimine that had been sublimed and then recrystallized fran acetcnitrile. Crystals of dknethyl sulfone diimine are orthorhuabic with unit cell dimensions of a = 5.44, b = 10.39 and c = 16.13 1. The observed conditions cn the Miller indices, hkk, for systematic absences are characteristic of space group F2dd.W F~QU a measured density of 1.324 g cm-3 we determine that there are 8 molecules per unit cell (the calculated density for 8 molecules is 1.318 g anm3). The general multiplicity of space group F2dd is 16; therefore, the sulfur atcan of each molecule must lie on a twofold axis in one of the special eightfold positions, (x,0,0),(1/4 + x, l/k, l/k) and the corresponding positicns related to these by the translations of a face-centered lattice. In this paler space group the x parameter of one set of atcms may be arbitrarily chosen; therefore we set the x parameter of the sulfur atoms equal to zero without loss of generality.
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