. "Hobza, Pavel" . . . "Pol\u00E1rn\u00ED isomer dimer\u016F kyseliny mraven\u010D\u00ED vytvo\u0159en\u00FD v nano-kapi\u010Dk\u00E1ch helia"@cs . "Chocholou\u0161ov\u00E1, Jana" . "7"^^ . "120" . "[1E2A51A791B7]" . "6"^^ . . "A Polar Isomer of Formic Acid Dimer Formed in Helium Nanodroplets" . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . . . . "The infrared spectrum of formic acid dimers in helium nanodroplets has been observed corresponding to excitation of the %22free%22 OH and CH stretches. The experimental results are consistent with a polar acyclic structure for the dimer. The formation of this structure in helium, as opposed to the much more stable cyclic isomer with two O-H.O hydrogen bonds, is attributed to the unique growth conditions that exist in helium droplets, at a temperature of 0.37 K. Theoretical calculations are also reported to aid in the interpretation of the experimental results. At long range the intermolecular interaction between the two monomers is dominated by the dipole-dipole interaction, which favors the formation of a polar dimer. By following the minimum-energy path, the calculations predict the formation of an acyclic dimer having one O-H.O and one C-H.O contact. This structure corresponds to a local minimum on the potential energy surface and differs significantly from the structure observed."@en . "A Polar Isomer of Formic Acid Dimer Formed in Helium Nanodroplets"@en . "The infrared spectrum of formic acid dimers in helium nanodroplets has been observed corresponding to excitation of the %22free%22 OH and CH stretches. The experimental results are consistent with a polar acyclic structure for the dimer. The formation of this structure in helium, as opposed to the much more stable cyclic isomer with two O-H.O hydrogen bonds, is attributed to the unique growth conditions that exist in helium droplets, at a temperature of 0.37 K. Theoretical calculations are also reported to aid in the interpretation of the experimental results. At long range the intermolecular interaction between the two monomers is dominated by the dipole-dipole interaction, which favors the formation of a polar dimer. By following the minimum-energy path, the calculations predict the formation of an acyclic dimer having one O-H.O and one C-H.O contact. This structure corresponds to a local minimum on the potential energy surface and differs significantly from the structure observed." . "RIV/61388955:_____/04:00101109" . "Madeja, F." . "2"^^ . "P(LN00A032), Z(AV0Z4040901)" . . "0021-9606" . "Journal of Chemical Physics" . "Miller, R. E." . . "resolution infrared-spectroscopy; double-resonance spectroscopy; ab initio calculations"@en . . . "RIV/61388955:_____/04:00101109!RIV/2005/AV0/A54005/N" . . . "A Polar Isomer of Formic Acid Dimer Formed in Helium Nanodroplets" . "Nauta, K." . "553106" . "Pol\u00E1rn\u00ED isomer dimer\u016F kyseliny mraven\u010D\u00ED vytvo\u0159en\u00FD v nano-kapi\u010Dk\u00E1ch helia"@cs . "Havenith, M." . . . "Infra\u010Derven\u00E9 spektrum dimer\u016F kyseliny mraven\u010D\u00ED v nano-kapi\u010Dk\u00E1ch helia odpov\u00EDd\u00E1 excitaci \u201Cvoln\u00FDch\u201C OH a CH valen\u010Dn\u00EDch vibrac\u00ED. Experiment\u00E1ln\u00ED v\u00FDsledky jsou konsisten\u010Dn\u00ED s pol\u00E1rn\u00ED a cyklickou strukturou dimeru. Vznik t\u00E9to struktury v heliu je na rozd\u00EDl od mnohem stabiln\u011Bj\u0161\u00EDch cyklick\u00FDch isomer\u016F s dv\u011Bma O-H O vod\u00EDkov\u00FDmi vazbami \u2013 p\u0159ipisov\u00E1na unik\u00E1tn\u00EDm podm\u00EDnk\u00E1m r\u016Fstu existuj\u00EDc\u00EDm v kapi\u010Dk\u00E1ch helia p\u0159i 0,37 K. Teoretick\u00E9 v\u00FDpo\u010Dty napom\u00E1haj\u00ED interpretaci experiment\u00E1ln\u00EDch v\u00FDsledk\u016F. V oblasti sil dalek\u00E9ho dosahu p\u0159evl\u00E1d\u00E1 v interakci dvou monomer\u016F dip\u00F3l-dip\u00F3l interakce, kter\u00E1 podporuje tvorbu pol\u00E1rn\u00EDho dimeru. V\u00FDpo\u010Dty na z\u00E1klad\u011B pr\u016Fb\u011Bhu minim\u00E1ln\u00ED energie p\u0159edpov\u00EDdaj\u00ED vznik acyklick\u00E9ho dimeru s jedn\u00EDm spojen\u00EDm O-H O a jedn\u00EDm spojen\u00EDm C-H O. tato struktura odpov\u00EDd\u00E1 lok\u00E1ln\u00EDmu minimu na plo\u0161e potenci\u00E1ln\u00ED energie a v\u00FDznamn\u011B se li\u0161\u00ED od struktury pozorovan\u00E9 v plynn\u00E9 f\u00E1zi."@cs . "22" . . . "A Polar Isomer of Formic Acid Dimer Formed in Helium Nanodroplets"@en . . "10554;10560" .