S-Nitrosotriphenylmethanethiol
# S-Nitrosotriphenylmethanethiol

S-Nitrosotriphenylmethanethiol is the organosulfur compound with the formula $(C_6H_5)_3CSNO.$ It is a rare example of a nitrosothiol derivative that is robust solid at room temperature. The green compound can be produced by the reaction of triphenylmethanethiol with nitrous acid:

    $(C_6H_5)_3CSH$ + HONO → $(C_6H_5)_3CSNO$ + $H_2O$

According to X-ray crystallography, S-nitrosotriphenylmethanethiol features a conventional trityl group appended to a bent SNO substituent. The S-N=O angle is 114°, while the S-N and N=O distances are 1.78 and 1.79 Å. Other S-nitrosothiols, e.g. MeSNO and SNAP have characterized by similar structures.

