Effective dipole moment parameters of 12C2H2 for the 100, 7.7, 1.4, 1.3, 1.2 and 1.0 μm regions

► Derived models reproduce 12C2H2 line intensities within their uncertainties. ► Unusual J-dependence of the line intensities in Q-branch of ν5-ν4 band is explained. ► V-dependence of the principal effective dipole moment parameters is not negligible.