"Structure and Hydrogen Bonding of Different Isomers of 2-Aminopyridine.NH3 Studied by IR/R2PI Spectroscopy"@en . . "1"^^ . . . "Vaupel, S." . "Structure and Hydrogen Bonding of Different Isomers of 2-Aminopyridine.NH3 Studied by IR/R2PI Spectroscopy" . . "3338;3343" . "588505" . . . "Struktura a vod\u00EDkov\u00E1 vazba r\u016Fzn\u00FDch isomer\u016F 2-aminopyridin . NH3 studovan\u00E1 IR/R2PI spektroskopi\u00ED"@cs . "4"^^ . . "108" . "Brutschy, B." . "The electronic and vibrational spectra of the 1: 1 clusters of 2-aminopyridine (2AP) with ammonia have been measured using resonant two-photon ionization (R2PI) and IR/R2PI vibrational spectroscopy. Density functional theory calculations were performed to identify structures and assign the vibrational spectra in the NH stretch region. The two lowest-energy isomers have been identified. In isomer 1, which is the global minimum energy structure, ammonia forms a strong H bond with the amino group and a weak one with the aromatic nitrogen. The vibrations of the groups involved in this H bonding exhibit red shifts of I 10 cm(-1) for the donating amino N-H and of 69 cm(-1) for the donating N-H group of ammonia. The degeneracy of the two asymmetrical vibrations of ammonia is removed in the cluster, with the corresponding bands at 3438 and 3406 cm(-1). In isomer 11 ammonia forms an H bond to the N-H group which points away from the aromatic nitrogen."@en . "Structure and Hydrogen Bonding of Different Isomers of 2-Aminopyridine.NH3 Studied by IR/R2PI Spectroscopy" . . "1089-5639" . "16" . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "Wu, R." . . "Journal of Physical Chemistry" . "Elektronick\u00E1 a vibra\u010Dn\u00ED spektra 1:1 klastr\u016F 2-aminopyridinu (AP) s amoniakem byla m\u011B\u0159ena IR/R2PI vibra\u010Dn\u00ED spektroskopi\u00ED za pou\u017Eit\u00ED dvoufotonov\u00E9 ionizace (R2PI). V\u00FDpo\u010Dty metodou funkcion\u00E1ln\u00ED hustoty byly provedeny pro identifikaci struktur a p\u0159i\u0159azen\u00ED vibra\u010Dn\u00EDch spekter v NH valen\u010Dn\u00ED oblasti. Byly identifikov\u00E1ny dva isomery s nejni\u017E\u0161\u00ED energi\u00ED. V isomeru I, kter\u00FD m\u00E1 strukturu s nejni\u017E\u0161\u00ED glob\u00E1ln\u00ED energi\u00ED, amoniak vytv\u00E1\u0159\u00ED silnou vod\u00EDkovou vazbu s aminoskupinou a slabou vazbu s aromatick\u00FDm dus\u00EDkem. Vibrace skupin tvo\u0159\u00EDc\u00EDch tuto vod\u00EDkovou vazbu vykazuj\u00ED \u010Derven\u00FD posum 110 cm-1 pro donatovou N-H vazbu v aminoskupin\u011B a 69cm-1 pro donatovou N-H vazbu v amoniaku. Degenerace dvou asymetrick\u00FDch vibrac\u00ED amoniaku s p\u00E1sy u 3438 a 3406 cm-1 je v klastru odstran\u011Bna. V isomeru II vytv\u00E1\u0159\u00ED a amoniak vod\u00EDkovou vazbu k skupin\u011B N-H sm\u011B\u0159uj\u00EDc\u00ED od aromatick\u00E9ho dus\u00EDku.tato vazba je slab\u0161\u00ED ne\u017E odpov\u00EDdaj\u00EDc\u00ED vazba v isomeru I. Valen\u010Dn\u00ED vibrace N-H v\u00E1zan\u00E9 vod\u00EDkem vykazuje v aminoskupin\u011B \u010Derven\u00FD posun 66 cm-1, kd..."@cs . "RIV/61388955:_____/04:00101141" . "The electronic and vibrational spectra of the 1: 1 clusters of 2-aminopyridine (2AP) with ammonia have been measured using resonant two-photon ionization (R2PI) and IR/R2PI vibrational spectroscopy. Density functional theory calculations were performed to identify structures and assign the vibrational spectra in the NH stretch region. The two lowest-energy isomers have been identified. In isomer 1, which is the global minimum energy structure, ammonia forms a strong H bond with the amino group and a weak one with the aromatic nitrogen. The vibrations of the groups involved in this H bonding exhibit red shifts of I 10 cm(-1) for the donating amino N-H and of 69 cm(-1) for the donating N-H group of ammonia. The degeneracy of the two asymmetrical vibrations of ammonia is removed in the cluster, with the corresponding bands at 3438 and 3406 cm(-1). In isomer 11 ammonia forms an H bond to the N-H group which points away from the aromatic nitrogen." . . "Nachtigall, Petr" . . . "RIV/61388955:_____/04:00101141!RIV/2005/AV0/A54005/N" . "P(LN00A032), Z(AV0Z4040901)" . . "[957FB23AF2B9]" . "Struktura a vod\u00EDkov\u00E1 vazba r\u016Fzn\u00FDch isomer\u016F 2-aminopyridin . NH3 studovan\u00E1 IR/R2PI spektroskopi\u00ED"@cs . . "Structure and Hydrogen Bonding of Different Isomers of 2-Aminopyridine.NH3 Studied by IR/R2PI Spectroscopy"@en . . "infrared depletion spectroscopy; clusters; gas-phase"@en . . . "6"^^ .