Search Results - "Burk, Peeter"

Stability of Fmoc, Trt, and Boc protecting groups in charged droplets -- electrospray ionization conditions.

Alternate Title: Fmoc, Trt ja Boc kaitserühma stabiilsus laetud tilkades elektropihustusionisatsiooni tingimustes.

Authors: Mastitski, Anton Burk, Peeter

Source: Proceedings of the Estonian Academy of Sciences. 2026, Vol. 75 Issue 2, p162-169. 8p.

Generalized principle of designing neutral superstrong Brønsted acids.

Authors: Koppel, Ilmar A. Burk, Peeter Koppel, Ivar

Source: Journal of the American Chemical Society; May 15 2002, Vol. 124 Issue 19, p5594-5600, 7p

1,10-phenanthroline and its complexes with magnesium compounds. Disproportionation equilibria.

Authors: Tammiku, Jaana Burk, Peeter Tuulmets, Ants

Source: Journal of Physical Chemistry A; September 20 2001, Vol. 105 Issue 37, p8554-8561, 8p

Computational modeling of strained alkenes: Choosing the right computational model.

Authors: Kekišev, Ott Burk, Peeter Järv, Jaak

Source: International Journal of Quantum Chemistry. Nov2017, Vol. 117 Issue 22, pn/a-N.PAG. 10p.

Gas-phase acidities of some neutral Brønsted superacids: a DFT and ab initio study.

Authors: Koppel, Ilmar A. Burk, Peeter Koppel, Ivar

Source: Journal of the American Chemical Society; May 31 2000, Vol. 122 Issue 21, p5114-5124, 11p

Revised and expanded scale of gas-phase lithium cation basicities. An experimental and theoretical study.

Authors: Burk, Peeter Koppel, Ilmar A. Koppel, Ivar

Source: Journal of Physical Chemistry A; March 30 2000, Vol. 104 Issue 12, p2824-2833, 10p

Can O-H acid be more acidic than its S-H analog? A G2 study of fluoromethanols and fluoromethanethiols.

Authors: Burk, Peeter Koppel, Ilmar A. Rummel, Alar

Source: Journal of Physical Chemistry A; February 24 2000, Vol. 104 Issue 7, p1602-1607, 6p

Theoretical study of dimethyl sulfoxide-anion clusters.

Authors: Burk, Peeter Mölder, Uldo Koppel, Ilmar A.

Source: Journal of Physical Chemistry; October 3 1996, Vol. 100, p16137-16140, 4p

Aromaticity of substituted cyclopropenes: a theoretical study.

Authors: Burk, Peeter Abboud, Jose-Luis M. Koppel, Ilmar A.

Source: Journal of Physical Chemistry; April 25 1996, Vol. 100, p6992-6997, 6p

Theoretical calculation of intrinsic acidity and basicity of FOH.

Authors: Burk, Peeter Koppel, Ilmar A. Rummel, Alar

Source: Journal of Physical Chemistry; February 2 1995, Vol. 99, p1432-1435, 4p

Proton and Lithium Cation Binding to Some β-Dicarbonyl Compounds. A Theoretical Study.

Alternate Title: Vezanje protona i litijevog kationa na neke β-dikarbonilne spojeve.

Authors: Burk, Peeter Taul, Kristo Tammiku-Taul, Jaana

Source: Croatica Chemica Acta. Mar2009, Vol. 82 Issue 1, p71-77. 7p. 6 Diagrams, 4 Charts.

Feasibility of the spontaneous gas-phase proton transfer equilibria between neutral Brønsted acids and Brønsted bases.

Authors: Burk, Peeter Koppel, Ivar Trummal, Aleksander et al.

Source: Journal of Physical Organic Chemistry. Jul/Aug2008, Vol. 21 Issue 7/8, p571-574. 4p. 2 Diagrams, 2 Charts.

Comparative calculations of alkali metal cation basicities of some Lewis bases.

Alternate Title: Lewisi aluste leelismetallikatiooni aluselisused: mõnede arvutuskeemia meetodite võrdlus.

Authors: Burk, Peeter Sults, Mari-Liis Tammiku-Taul, Jaana

Source: Proceedings of the Estonian Academy of Sciences, Chemistry. Sep2007, Vol. 56 Issue 3, p107-121. 15p.

Comparative calculations of complexion enthalpies between Lewis bases and borontrifluoride.

Authors: Burk, Peeter Kutsar, Martin

Source: Proceedings of the Estonian Academy of Sciences, Chemistry. Sep2005, Vol. 54 Issue 3, p154-164. 11p.

Comparative semiempirical, ab initio, and DFT study of interactions between polypyrrole pentamer dication and some anions.

Authors: Burk, Peeter Rauk, Imbi Tamm, Tarmo

Source: Proceedings of the Estonian Academy of Sciences, Chemistry. Jun2005, Vol. 54 Issue 2, p85-93. 9p.

Computational study of cesium cation-humic substance interactions. A neutral analogue ligand molecules approach.

Authors: Burk, Peeter Tamp, Sven Tammiku-Taul, Jaana et al.

Source: Proceedings of the Estonian Academy of Sciences, Chemistry. Jun2005, Vol. 54 Issue 2, p70-84. 15p.

PHOSPHORUS--CARBON DIAD TAUTOMERISM IN PHOSPHONIUM COMPOUNDS. THEORETICAL STUDY.

Authors: Burk, Peeter Molder, Uldo Tamm, Kaido

Source: Proceedings of the Estonian Academy of Sciences, Chemistry. Dec2001, Vol. 50 Issue 4, p241. 13p. 5 Charts, 4 Graphs.

Subjects: Tautomerism, Phosphorus, Carbonyl compounds

DFT Study of Americium and Europium Complexation with 2,9-Bis(1,2,4-triazin-3-yl)-1,10-Phenanthroline Ligand: The Influence of the Counteranions–Nitrate Versus Perchlorate.

Authors: Burk, Jaanus Sikk, Lauri Tämm, Kaido et al.

Source: Molecules. Feb2026, Vol. 31 Issue 4, p665. 11p.

Gas-Phase Lithium Cation Basicity: Revisiting the High Basicity Range by Experiment and Theory.

Authors: Mayeux, Charly Burk, Peeter Gal, Jean-Francois et al.

Source: Journal of the American Society for Mass Spectrometry. Nov2014, Vol. 25 Issue 11, p1962-1973. 12p.

Subjects: Gas phase reactions, Lithium ions, Proton transfer reactions, Ligands (Chemistry), Tetrahydrofuran, Pyridine

Relative stability and proton transfer reactions of unsaturated isocyanides and cyanides.

Authors: Adamson, Aiko Kaljurand, Ivari Guillemin, Jean‐Claude et al.

Source: Journal of Physical Organic Chemistry; Sep2016, Vol. 29 Issue 9, p452-459, 8p