| 释义 |
trithio- Chem.|traɪθaɪəʊ|
[f. tri- 5 + thio-.]
Prefix denoting that three atoms of sulphur have been substituted for three atoms of oxygen in the substance designated by the rest of the name; e.g. trithiocarbonic acid, H2CS3, derived from carbonic acid, H2CO3; trithiocarbonate, a salt of this acid. In many cases, however, tri- refers to the whole substance and not to the sulphur alone; e.g. trithio-acetaldehyde, (CH3CHS)3, a compound of three molecules of thio-acetaldehyde, CH3CHS.
1894Muir & Morley Watts' Dict. Chem. IV. 692 Tri-Thio-Citric Ether C3H5O(CO.SEt)3..Oil, smelling like mercaptan. 1899Smith Richter's Org. Chem. (ed. 3) I. 203 Trithio-formaldehyde (CH2S)3, melts at 216°. 1910Walker & Mott Holleman's Org. Chem. (ed. 3) 348 Carbon disulphide..With alkali-metal or alkaline-earth-metal sulphides it yields trithiocarbonates. |