An experimental and theoretical study of the absolute value of the one-bond spin-spin coupling constant vertical bar(1)J(Si,H)vertical bar in SiHnCl4-n (n = 0-4) dissolved in THF-d(8) is presented. We found vertical bar(1)J(Si,H)vertical bar to increase with an increasing number of chlorine substituents, and the quantitative changes were found to differ from the values previously reported for the same compounds dissolved in cyclohexane-d(12). We also report on the variations in vertical bar(1)J( Si, H)vertical bar as a function of temperature, which we found to be linearly temperature dependent for the chlorine-substituted silanes and temperature independent for SiH4. Furthermore, the temperature dependence of vertical bar(1)J(Si,H)vertical bar varied between the different chlorosilanes. Solvent-solute interactions were studied by quantum chemical DFT calculations. The variations in chloro-silane bond lengths upon adduct formation and the different adduct interaction energies may explain the temperature dependences of the coupling constants.