Infrared laser absorption measurements of HCl(v=1) production in reactions of Cl atoms with isobutane, methanol, acetaldehyde, and toluene at 295 K

Absolute rate coefficients and branching ratios for production of HCl(v=1) are measured for the reactions of Cl with (CH3)3CH, CH3OH, CH3CHO, and C6H5CH3. The fractions of HCl(v=1) produced (f=HCl(v=1)/HCl (total)) are f((CH3)3CH)=0.03±0.02, f(CH3OH)=0.12±0.02, f(CH3CHO)=0.54±0.04, and f(C6H5CH3)=0.47±0.03; a significant fraction of the exothermicity appears in HCl vibration. Rate coefficients at 295 K are k((CH3)3CH)=(1.49±0.02)×10−10, k(CH3OH)=(5.6±0.2)×10−11, k(CH3CHO)=(8.3±0.1)×10−11, and k(C6H5CH3)=(6.1±0.2)×10−11 cm3 molecule−1 s−1.