"A simple relation between 1H NMR data and mixing enthalpy for systems with 1:1 complex formation by hydrogen bonding."@en . "0"^^ . "2"^^ . "0"^^ . "Vysok\u00E1 \u0161kola chemicko-technologick\u00E1 v Praze. Fakulta chemicko-in\u017Een\u00FDrsk\u00E1. \u00DAstav fyzik\u00E1ln\u00ED chemie" . "Jednoduch\u00FD vztah mezi \u00FAdaji 1H NMR a HE u syst\u00E9m\u016F tvo\u0159\u00EDc\u00EDch komplexy 1:1 vod\u00EDkovou vazbou." . . . "[49FDC5000112]" . . "Neuveden" . "A simple explicit relation linking 1H NMR chemical shifts and mixing enthalpy has been found for systems that form 1:1 complexes by hydrogen bonding. Starting from relatively general assumptions, two forms of this relation have been derived. The first form is represented by proportionality between the solution enthalpy of the proton-donor and the chemical shift change of its active hydrogen atom. The second form is mediated by the relative extent of hydrogen bond formation , a quantity which can be directly evaluated from measurements of either the 1H NMR chemical shift or the mixing enthalpy. The validity of both relation forms has been convincingly demonstrated for twelve systems formed by a strong proton donor (halothane [1-brom-1-chlor-2,2,2-trifluorethane] or trichloromethane) and an oxygen- or nitrogen-containing proton-acceptor (aliphatic or alicyclic ether, piperidine)."@en . "Dohnal, Vladim\u00EDr" . "75;87" . "22340" . . "RIV/60461373:22340/01:00004022" . "13"^^ . . . "Z(MSM 223400008)" . "complex formation; 1H NMR; mixing enthalpy;"@en . . "Byl nalezen jednoduch\u00FD explicitn\u00ED vztah mezi daty 1H NMR a dodatkovou entalpi\u00ED u syst\u00E9m\u016F tvo\u0159\u00EDc\u00EDch komplexy 1:1 vod\u00EDkovou vazbou. Za pom\u011Brn\u011B obecn\u00FDch p\u0159edpoklad\u016F byly odvozeny dv\u011B formy tohoto vztahu. Prvn\u00ED formu p\u0159edstavuje proporcionalita mezi rozpou\u0161t\u011Bc\u00ED entalpi\u00ED proton-donoru a zm\u011Bnou chemick\u00E9ho posunu jeho aktivn\u00EDho vod\u00EDku. Druh\u00E1 forma vztahu je zprost\u0159edkov\u00E1na relativn\u00EDm rozsahem tvorby vod\u00EDkov\u00E9 vazby , kter\u00FD je veli\u010Dinou p\u0159\u00EDmo vyhodnotitelnou jak z 1H NMR m\u011B\u0159en\u00ED, tak z m\u011B\u0159en\u00ED dodatkov\u00E9 entalpie. Platnost obou forem vztahu byla demonstrov\u00E1na pro \u0161est syst\u00E9m\u016F tvo\u0159en\u00FDch siln\u00FDm proton-donorem (halothanem [1-brom-1-chlor-2,2,2-trifluorethan] \u010Di chloroformem) a kysl\u00EDkat\u00FDm (eter) \u010Di dus\u00EDkat\u00FDm (piperidin) proton-akceptorem." . "Sborn\u00EDk p\u0159\u00EDsp\u011Bvk\u016F konference TERMODYNAMIKA 2001 (CD ROM)" . . "A simple relation between 1H NMR data and mixing enthalpy for systems with 1:1 complex formation by hydrogen bonding."@en . . . "Jednoduch\u00FD vztah mezi \u00FAdaji 1H NMR a HE u syst\u00E9m\u016F tvo\u0159\u00EDc\u00EDch komplexy 1:1 vod\u00EDkovou vazbou."@cs . "Jednoduch\u00FD vztah mezi \u00FAdaji 1H NMR a HE u syst\u00E9m\u016F tvo\u0159\u00EDc\u00EDch komplexy 1:1 vod\u00EDkovou vazbou." . . "Jednoduch\u00FD vztah mezi \u00FAdaji 1H NMR a HE u syst\u00E9m\u016F tvo\u0159\u00EDc\u00EDch komplexy 1:1 vod\u00EDkovou vazbou."@cs . . "Brejlov, \u010CR" . "683847" . . "RIV/60461373:22340/01:00004022!RIV/2004/MSM/223404/N" . "80-86238-17-2" . . . "Tkadlecov\u00E1, Marcela" . "2"^^ . "2001-09-13+02:00"^^ . . .