内容简介：
【数据内容】 The latest version of the UMIST database, RATE99, provides the rate coefficients of 4113 gas-phase reactions among 396 species involving the 12 elements H, He, C, N, O, Na, Mg, Si, P, S, Cl and Fe. With the exception of the elements Na, Mg and Fe, which are included in the ratefile to produce a source of ionisation in dark clouds, the chemistries of the other elements are fairly comprehensive. Neutral molecules containing up to 12 atoms (CH3C7N) are included.
