Air-sensitive, thermally unstable tris(dimethylamino)sulfonium (TAS) salts (3) of the title anions [ArNSN](-) have been prepared from corresponding sulfurdiimides Ar-N=S=N-SiMe3 (2) by Si-N bond cleavage with [(Me2N)(3)S](+)[Me3SiF2](-)(TASF). They are characterized by low-temperature X-ray crystallography as Z isomers. Because of the very short terminal S-NI distance (144.2 (3h) - 147.9 (3i) pm) and the relatively long internal S-N distance (158.3 (3i) - 160.3 (3c) pm) the [ArNSN](-) ions should be regarded as thiazylamides 1b, rare species containing a SN triple bond. A bonding model is developed and the experimental results are compared with those of restricted Hartree-Fock (R drop HF), density functional theory (DFT), and Moller-Plesset second-order (MP2) calculations.
BESTARI, KETUT;OAKLEY, RICHARD T.;CORDES, A. WALLACE, CAN. J. CHEM., 69,(1991) N, C. 94-99
作者:BESTARI, KETUT、OAKLEY, RICHARD T.、CORDES, A. WALLACE