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INFRARED BANDS OF $^{15}N_{2}{^{18}}O$ AND INTERNUCLEAR DISTANCES IN NITROUS OXIDE.
James L. Griggs, K. Narahari Rao, L. H. Jonés, Ralph M. Potter
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Abstract
The rotational structure of sixteen vibration rotation bands of the $^{15}N_{2}{^{18}}O$ molecule in the $2-5 \\mu$ region has been measured and analyzed. Since the molecule $^{15}N_{2}{^{18}}O$ is the heaviest of all the stable isotopic species of nitrous oxide, the study of its infrared bands allowed the determination of very accurate values for the equilibrium internuclear distances $r_{N-N} = 1.1266_{5} \\pm 0.0005 {\\AA}$ and $r_{N-O} = 1.1856_{5} \\pm 0.0005$ {\\AA}$. The distance between the end atoms is determined with a much higher precision $(r_{N-N}+r_{N-O}) = 2.31230 \\pm 0.00003 {\\AA}$.