The high resolution FTIR spectrum of the ν2 band of formaldehyde isotopomer H213CO

► FTIR absorption spectrum of the ν2 band of H213CO at 0.0063 cm−1 resolution. ► 447 IR transitions in the 1630-1780 cm−1 region with rms deviation of 0.00056 cm−1. ► Analysis yielded more higher-order constants with greater accuracy.