Conformational stability, r(0) structural parameters, vibrational assignments and ab initio calculations of ethyldichlorophosphine.

•Vibrational data indicate the presence of two conformers.•The enthalpy difference going from the trans form to the gauche form is 88±9cm−1.•Estimated r0 structural parameters have been determined for both conformers.•Ab initio calculations have been performed for both forms.