dc.creator Parmer, Kent F. en_US dc.creator Rao, K. Narahari en_US dc.creator Baldacci, A. en_US dc.creator Ghersetti, S. en_US dc.creator Hurlock, S. C. en_US dc.date.accessioned 2006-06-15T13:29:11Z dc.date.available 2006-06-15T13:29:11Z dc.date.issued 1972 en_US dc.identifier 1972-B-4 en_US dc.identifier.uri http://hdl.handle.net/1811/8907 dc.description $^{*}$The c and d nomenclature of $\ell$-type doublets follows the convention that for J even, the + level is called c and the - level d."" en_US dc.description Author Institution: Department of Physics, The Ohio State University; Laboratorio del C.N.R. dei Composti del Carbonio Contenenti Eteroatomi, Ozzano Emilia and Istituti di Chimica Organica dell' Universit\'{a} di Bologna e en_US dc.description.abstract During recent years nearly 150 infrared bands of $C_{2}H_{2}$, $C_{2}D_{2}$ and $C_{2}HD$ have been recorded with high resolution vacuum spectrographs. The molecular constants of the levels involved in the transitions revealed many finer details pertaining to the effects of vibration rotation interactions. A comparison of the nature of the perturbations in these three isotopic species of acetylene makes an interesting study. The experimental data established in general that in the $\Delta$ states the c levels lie above the d levels when the $\Sigma^{+}$ component is below the $\Delta$ component whereas in the $\Pi$ states $\Pi_{d}$ is higher than $\Pi_{C}. ^{*}$ An exception to this has been found for the $\Pi$ state (00112)$^{1}$ of $C_{2}H_{2}$ where the c component seems to lie above the corresponding d component. en_US dc.format.extent 140519 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title VIBRATION ROTATION INTERACTIONS IN $C_{2}H_{2}$, $C_{2}D_{2}$ AND $C_{2}HD$ en_US dc.type article en_US
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