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DC Field | Value | Language |
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dc.citation.endPage | 869 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 862 | - |
dc.citation.title | JOURNAL OF CHEMICAL PHYSICS | - |
dc.citation.volume | 92 | - |
dc.contributor.author | GUTOWSKY, HS | - |
dc.contributor.author | HAJDUK, PJ | - |
dc.contributor.author | CHUANG, C | - |
dc.contributor.author | RUOFF, RS | - |
dc.date.accessioned | 2023-12-22T13:09:33Z | - |
dc.date.available | 2023-12-22T13:09:33Z | - |
dc.date.created | 2021-10-20 | - |
dc.date.issued | 1990-01 | - |
dc.description.abstract | Microwave rotational transitions have been observed for HCN–(CO2)3, DCN–(CO2)3, H13CN–(CO2)3, HC15N–(CO2)3, HCN–(13CO2)3, HCN–(18OCO)(CO2)2, and HCN–(CO2)(C18O2)2 with the pulsed Fourier transform, Flygare/Balle Mark II spectrometer. A symmetric top spectrum was observed for the parent isotopic species with rotational constants of B0=861.6392(1) MHz, DJ =0.681(5) kHz, and DJK =0.821(12) kHz. The results for isotopic substitution indicate a zero‐point, vibrationally averaged geometry having the C3 symmetry of a cyclic (CO2)3 structure with the HCN along the symmetry axis and the N end closest to the (CO2)3. The C3 symmetry is confirmed by the observation of states limited to K=±3n, with n=0,1,2,..., as predicted for threefold symmetry generated by bosons only. The (CO2)3 has a pinwheel configuration, as in the free trimer, and the three carbons lie in a plane R=2.758 Å below the center of mass (c.m.) of the HCN. The C‐C distance in this subunit is 3.797 Å which is 0.241 Å shorter than that found in the free (CO2)3 trimer. The individual CO2’s in the (CO2)3 pinwheel are rotated out of the C–C–C plane by γ=−6.9°, as determined from an inertial analysis, with the inner oxygens rotated away from the HCN. The HCN has an average torsional angle of 10.3°, as determined by isotopic substitution, and an observed χcc value of −3.891 MHz for the 14 N. The c.m.(HCN) to C distance is 3.525 Å, compared to 3.592 Å in the HCN‐CO2 T‐shaped dimer. The isotopic substitution by 18O perturbs the structure of the symmetric top clusters by a remarkable amount, decreasing γ to −28.9° and increasing R and RCC to 2.797 and 3.814 Å, respectively. In the 18O substituted species, the CO2’s are rotated in the C–C–C plane from C3v symmetry by the pinwheel angle β=∼32.5°. | - |
dc.identifier.bibliographicCitation | JOURNAL OF CHEMICAL PHYSICS, v.92, no.2, pp.862 - 869 | - |
dc.identifier.doi | 10.1063/1.458118 | - |
dc.identifier.issn | 0021-9606 | - |
dc.identifier.scopusid | 2-s2.0-0008522219 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/54584 | - |
dc.identifier.url | https://aip.scitation.org/doi/10.1063/1.458118 | - |
dc.identifier.wosid | A1990CJ56000004 | - |
dc.language | 영어 | - |
dc.publisher | AMER INST PHYSICS | - |
dc.title | ROTATIONAL SPECTRUM AND STRUCTURE OF THE HCN-(CO2)3 TETRAMER | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Physics, Atomic, Molecular & Chemical | - |
dc.relation.journalResearchArea | Chemistry; Physics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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