Cláudio Francisco Tormena - Publications

Affiliations: 
Organic University of Campinas (UNICAMP) 

62 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2019 Rodrigues Batista P, Karas LJ, Viesser RV, de Oliveira CC, Brown Gonçalves M, Tormena CF, Rittner R, Ducati LC, de Oliveira PR. Dealing With Hydrogen Bonding on the Conformational Preference of 1,3-Aminopropanols: Experimental and Molecular Dynamics Approaches. The Journal of Physical Chemistry. A. PMID 31517493 DOI: 10.1021/acs.jpca.9b05619  1
2019 Nepel A, Viesser RV, Tormena CF. Coupling in Benzaldehyde Derivatives: Ortho Substitution Effect. Acs Omega. 4: 1494-1503. PMID 31459414 DOI: 10.1021/acsomega.8b03035  1
2019 Santana FR, Luna-Dulcey L, Antunes VU, Tormena CF, Cominetti MR, Duarte MC, da Silva JA. Evaluation of the cytotoxicity on breast cancer cell of extracts and compounds isolated from (L.) poit. Natural Product Research. 1-8. PMID 31192696 DOI: 10.1080/14786419.2019.1628747  0.8
2019 Zanatta M, Antunes VU, Tormena CF, Dupont J, Dos Santos FP. Dealing with supramolecular structure for ionic liquids: a DOSY NMR approach. Physical Chemistry Chemical Physics : Pccp. PMID 30657144 DOI: 10.1039/c8cp07071g  0.8
2018 Salome KS, Tormena CF. Revisiting the Long-Range Perlin Effect in a Conformationally Constrained Oxocane. The Journal of Organic Chemistry. PMID 30101591 DOI: 10.1021/acs.joc.8b00935  0.4
2018 Silva WGDP, Tormena CF, Rittner R. Revealing the Conformational Preferences of Proteinogenic Glutamic Acid Derivatives in Solution by H NMR Spectroscopy and Theoretical Calculations. The Journal of Physical Chemistry. A. PMID 29664636 DOI: 10.1021/acs.jpca.8b02523  0.6
2018 V Viesser R, Ducati LC, Tormena CF, Autschbach J. The halogen effect on the C NMR chemical shift in substituted benzenes. Physical Chemistry Chemical Physics : Pccp. PMID 29632914 DOI: 10.1039/c8cp01249k  0.6
2018 Castañar L, Moutzouri P, Barbosa TM, Tormena CF, Rittner R, Phillips AR, Coombes SR, Nilsson M, Morris GA. FESTA: an efficient NMR approach for the structural analysis of mixtures containing fluorinated species. Analytical Chemistry. PMID 29578330 DOI: 10.1021/acs.analchem.8b00753  0.8
2018 Barbosa TM, Viesser RV, Martins LG, Rittner R, Tormena CF. The Antagonist Effect of Nitrogen Lone Pair: J versus J. Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry. PMID 29537688 DOI: 10.1002/cphc.201800073  1
2017 Viesser RV, Ducati LC, Tormena CF, Autschbach J. The unexpected roles of σ and π orbitals in electron donor and acceptor group effects on the (13)C NMR chemical shifts in substituted benzenes. Chemical Science. 8: 6570-6576. PMID 28989684 DOI: 10.1039/c7sc02163a  1
2017 Karas LJ, Batista PR, Viesser RV, Tormena CF, Rittner R, de Oliveira PR. Trends of intramolecular hydrogen bonding in substituted alcohols: a deeper investigation. Physical Chemistry Chemical Physics : Pccp. PMID 28628184 DOI: 10.1039/c7cp03572a  1
2016 Foroozandeh M, Castañar L, Martins LG, Sinnaeve D, Poggetto GD, Tormena CF, Adams RW, Morris GA, Nilsson M. Ultrahigh-Resolution Diffusion-Ordered Spectroscopy. Angewandte Chemie (International Ed. in English). PMID 27862747 DOI: 10.1002/anie.201609676  0.8
2016 Dal Poggetto G, Antunes VU, Nilsson M, Morris GA, Tormena CF. (19) F NMR Matrix-Assisted DOSY: a versatile tool for differentiating fluorinated species in mixtures. Magnetic Resonance in Chemistry : Mrc. PMID 27682133 DOI: 10.1002/mrc.4534  0.8
2016 Viesser RV, Ducati LC, Autschbach J, Tormena CF. NMR spin-spin coupling constants: bond angle dependence of the sign and magnitude of the vicinal (3)JHF coupling. Physical Chemistry Chemical Physics : Pccp. PMID 27526856 DOI: 10.1039/c6cp04853f  0.8
2015 Abraham MH, Abraham RJ, Aliev AE, Tormena CF. Is there an intramolecular hydrogen bond in 2-halophenols? A theoretical and spectroscopic investigation. Physical Chemistry Chemical Physics : Pccp. 17: 25151-9. PMID 26352197 DOI: 10.1039/c5cp04061b  0.8
2015 Viesser RV, Ducati LC, Autschbach J, Tormena CF. Effects of stereoelectronic interactions on the relativistic spin-orbit and paramagnetic components of the (13)C NMR shielding tensors of dihaloethenes. Physical Chemistry Chemical Physics : Pccp. 17: 19315-24. PMID 26138131 DOI: 10.1039/c5cp02026c  0.8
2014 Solha DC, Barbosa TM, Viesser RV, Rittner R, Tormena CF. Experimental and theoretical studies of intramolecular hydrogen bonding in 3-hydroxytetrahydropyran: beyond AIM analysis. The Journal of Physical Chemistry. A. 118: 2794-800. PMID 24684251 DOI: 10.1021/jp500211y  1
2014 Braga CB, Ducati LC, Tormena CF, Rittner R. Conformational analysis and intramolecular interactions of L-proline methyl ester and its N-acetylated derivative through spectroscopic and theoretical studies. The Journal of Physical Chemistry. A. 118: 1748-58. PMID 24533966 DOI: 10.1021/jp5007632  0.6
2014 Dal Poggetto G, Favaro DC, Nilsson M, Morris GA, Tormena CF. 19F DOSY NMR analysis for spin systems with nJFF couplings. Magnetic Resonance in Chemistry : Mrc. 52: 172-7. PMID 24464558 DOI: 10.1002/mrc.4047  0.8
2014 Cormanich RA, Ducati LC, Tormena CF, Rittner R. Phenylalanine and tyrosine methyl ester intramolecular interactions and conformational analysis by (1)H NMR and infrared spectroscopies and theoretical calculations. Spectrochimica Acta. Part a, Molecular and Biomolecular Spectroscopy. 123: 482-9. PMID 24434201 DOI: 10.1016/j.saa.2013.12.088  0.6
2014 Silla JM, Silva WG, Cormanich RA, Rittner R, Tormena CF, Freitas MP. Gauche preference of β-fluoroalkyl ammonium salts. The Journal of Physical Chemistry. A. 118: 503-7. PMID 24377652 DOI: 10.1021/jp410458w  0.6
2013 Ducati LC, Braga CB, Rittner R, Tormena CF. A critical evaluation of the s-cis-trans isomerism of 2-acetylpyrrole and its N-methyl derivative through infrared and NMR spectroscopies and theoretical calculations. Spectrochimica Acta. Part a, Molecular and Biomolecular Spectroscopy. 116: 196-203. PMID 23933556 DOI: 10.1016/j.saa.2013.07.024  0.6
2013 Favaro DC, Contreras RH, Tormena CF. Unusual through-space, TS, pathway for the transmission of J(FHf) coupling: 2-fluorobenzaldehyde study case. The Journal of Physical Chemistry. A. 117: 7939-45. PMID 23895141 DOI: 10.1021/jp402618c  0.48
2013 Favaro DC, Contreras RH, Tormena CF. The electronic origin of unusually large (n)J(FN) coupling constants in some fluoroximes. Magnetic Resonance in Chemistry : Mrc. 51: 334-8. PMID 23554215 DOI: 10.1002/mrc.3950  0.48
2013 Rittner R, Ducati LC, Tormena CF, Cormanich RA, Fiorin BC, Braga CB, Abraham RJ. Studies on the s-cis-trans isomerism for some furan derivatives through IR and NMR spectroscopies and theoretical calculations. Spectrochimica Acta. Part a, Molecular and Biomolecular Spectroscopy. 103: 84-9. PMID 23261606 DOI: 10.1016/j.saa.2012.11.013  0.6
2012 Tormena CF, Evans R, Haiber S, Nilsson M, Morris GA. Matrix-assisted diffusion-ordered spectroscopy: application of surfactant solutions to the resolution of isomer spectra. Magnetic Resonance in Chemistry : Mrc. 50: 458-65. PMID 22549888 DOI: 10.1002/mrc.3822  0.8
2012 Ducati LC, Contreras RH, Tormena CF. Unexpected geometrical effects on paramagnetic spin-orbit and spin-dipolar 2J(FF) couplings. The Journal of Physical Chemistry. A. 116: 4930-3. PMID 22533483 DOI: 10.1021/jp301912x  0.6
2012 Fonseca TA, Freitas MP, Cormanich RA, Ramalho TC, Tormena CF, Rittner R. Computational evidence for intramolecular hydrogen bonding and nonbonding X···O interactions in 2'-haloflavonols. Beilstein Journal of Organic Chemistry. 8: 112-7. PMID 22423278 DOI: 10.3762/bjoc.8.12  0.6
2011 Cormanich RA, Moreira MA, Freitas MP, Ramalho TC, Anconi CP, Rittner R, Contreras RH, Tormena CF. 1hJFH coupling in 2-fluorophenol revisited: is intramolecular hydrogen bond responsible for this long-range coupling? Magnetic Resonance in Chemistry : Mrc. 49: 763-7. PMID 22095853 DOI: 10.1002/mrc.2838  0.6
2011 Favaro DC, Ducati LC, dos Santos FP, Contreras RH, Tormena CF. Stereochemical dependence of 3JCH coupling constants in 2-substituted 4-t-butyl-cyclohexanone and their alcohol derivatives. The Journal of Physical Chemistry. A. 115: 14539-45. PMID 22060817 DOI: 10.1021/jp2083456  0.6
2011 Silla JM, Cormanich RA, Duarte CJ, Freitas MP, Ramalho TC, Barbosa TM, Santos FP, Tormena CF, Rittner R. Alkyl group effect on the conformational isomerism of trans-2-bromoalkoxycyclohexanes analyzed by nmr spectroscopy and theoretical calculations. The Journal of Physical Chemistry. A. 115: 10122-7. PMID 21793564 DOI: 10.1021/jp206136t  0.6
2011 Silla JM, Duarte CJ, Freitas MP, Ramalho TC, Cormanich RA, Santos FP, Tormena CF, Rittner R. Theoretical and infrared studies on the conformational isomerism of trans-2-bromo-alkoxycyclohexanes. Spectrochimica Acta. Part a, Molecular and Biomolecular Spectroscopy. 81: 359-62. PMID 21752701 DOI: 10.1016/j.saa.2011.06.023  0.6
2011 Rittner R, Ducati LC, Tormena CF, Fiorin BC, Braga CB. Conformational preferences for some 5-substituted 2-acetylthiophenes through infrared spectroscopy and theoretical calculations. Spectrochimica Acta. Part a, Molecular and Biomolecular Spectroscopy. 79: 1071-6. PMID 21620762 DOI: 10.1016/j.saa.2011.04.021  0.6
2011 Anizelli PR, Favaro DC, Contreras RH, Tormena CF. Effect of electronic interactions on NMR 1J(CF) and 2J(CF) couplings in cis- and trans-4-t-butyl-2-fluorocyclohexanones and their alcohol derivatives. The Journal of Physical Chemistry. A. 115: 5684-92. PMID 21563802 DOI: 10.1021/jp202592c  0.48
2011 Vilcachagua JD, Ducati LC, Rittner R, Contreras RH, Tormena CF. Experimental, SOPPA(CCSD), and DFT analysis of substitutent effects on NMR 1JCF coupling constants in fluorobenzene derivatives. The Journal of Physical Chemistry. A. 115: 1272-9. PMID 21280628 DOI: 10.1021/jp110290b  0.6
2011 Gomes PC, de Souza BM, Dias NB, Cesar-Tognoli LM, Silva-Filho LC, Tormena CF, Rittner R, Richardson M, Cordeiro MN, Palma MS. Nigriventrine: a low molecular mass neuroactive compound from the venom of the spider Phoneutria nigriventer. Toxicon : Official Journal of the International Society On Toxinology. 57: 266-74. PMID 21145338 DOI: 10.1016/j.toxicon.2010.11.021  0.6
2010 Contreras RH, dos Santos FP, Ducati LC, Tormena CF. Difference between ²JC2H3 and ²JC3H2 spin-spin couplings in heterocyclic five- and six-membered rings as a probe for studying σ-ring currents: a quantum chemical analysis. Magnetic Resonance in Chemistry : Mrc. 48: S151-8. PMID 21104760 DOI: 10.1002/mrc.2669  0.6
2010 Tormena CF, Evans R, Haiber S, Nilsson M, Morris GA. Matrix-assisted diffusion-ordered spectroscopy: mixture resolution by NMR using SDS micelles. Magnetic Resonance in Chemistry : Mrc. 48: 550-3. PMID 20540075 DOI: 10.1002/mrc.2621  0.8
2010 Saidemberg DM, da Silva-Filho LC, Tognoli LM, Tormena CF, Palma MS. Polybioside, a neuroactive compound from the venom of the social wasp Polybia paulista. Journal of Natural Products. 73: 527-31. PMID 20158240 DOI: 10.1021/np900424t  0.8
2010 Contreras RH, Gotelli G, Ducati LC, Barbosa TM, Tormena CF. Analysis of canonical molecular orbitals to identify fermi contact coupling pathways. 1. Through-space transmission by overlap of (31)P lone pairs. The Journal of Physical Chemistry. A. 114: 1044-51. PMID 19928769 DOI: 10.1021/jp908970f  0.6
2009 Neto AC, Ducati LC, Rittner R, Tormena CF, Contreras RH, Frenking G. Heavy Halogen Atom Effect on (13)C NMR Chemical Shifts in Monohalo Derivatives of Cyclohexane and Pyran. Experimental and Theoretical Study. Journal of Chemical Theory and Computation. 5: 2222-8. PMID 26616608 DOI: 10.1021/ct800520w  0.6
2009 Fiorin BC, Basso EA, Tormena CF, Rittner R, Abraham RJ. Theoretical and experimental investigation on the rotational isomerism in alpha-fluoroacetophenones. The Journal of Physical Chemistry. A. 113: 2906-13. PMID 19260690 DOI: 10.1021/jp808048s  0.8
2009 Gauze GF, Basso EA, Contreras RH, Tormena CF. Effect of sulfur oxidation on the transmission mechanism of 4J(HH) NMR coupling constants in 1,3-dithiane. The Journal of Physical Chemistry. A. 113: 2647-51. PMID 19216509 DOI: 10.1021/jp810981z  0.8
2009 Martins CR, Ducati LC, Tormena CF, Rittner R. Conformational analysis of 2-halocyclopentanones by NMR and IR spectroscopies and theoretical calculations. Spectrochimica Acta. Part a, Molecular and Biomolecular Spectroscopy. 72: 1089-96. PMID 19201255 DOI: 10.1016/j.saa.2009.01.002  0.6
2009 Coelho JV, Freitas MP, Tormena CF, Rittner R. On the (4)J(HH) long-range coupling in 2-bromocyclohexanone: conformational insights. Magnetic Resonance in Chemistry : Mrc. 47: 348-51. PMID 19090496 DOI: 10.1002/mrc.2385  0.6
2009 Contreras RH, Provasi PF, dos Santos FP, Tormena CF. Stereochemical dependence of NMR geminal spin-spin coupling constants. Magnetic Resonance in Chemistry : Mrc. 47: 113-20. PMID 18991325 DOI: 10.1002/mrc.2359  0.52
2008 Cunha Neto A, dos Santos FP, Contreras RH, Rittner R, Tormena CF. Analysis of the electronic origin of the 1JCH spin-spin coupling trend in 1-X-cyclopropanes: experimental and DFT study. The Journal of Physical Chemistry. A. 112: 11956-9. PMID 18950144 DOI: 10.1021/jp8069805  0.6
2008 Pedersoli S, Dos Santos FP, Rittner R, Contreras RH, Tormena CF. NMR spin-spin couplings involving nuclei in the neighborhood of a carbonyl group. 3JCH couplings in alpha-substituted acetamides. Magnetic Resonance in Chemistry : Mrc. 46: 202-5. PMID 18181244 DOI: 10.1002/mrc.2158  0.6
2008 dos Santos FP, Tormena CF, Contreras RH, Rittner R, Magalhães A. The effect of carbonyl group in the asymmetry of 3,4JCH coupling constants in norbornanones. Magnetic Resonance in Chemistry : Mrc. 46: 107-9. PMID 18092306 DOI: 10.1002/mrc.2154  0.6
2007 Cedran JC, dos Santos FP, Basso EA, Tormena CF. Conformational preferences of 2-methoxy, 2-methylthio, and 2-methylselenocyclohexyl-N,N-dimethylcarbamate: a theoretical and experimental investigation. The Journal of Physical Chemistry. A. 111: 11701-5. PMID 17949064 DOI: 10.1021/jp075280k  0.8
2007 Tormena CF, Vilcachagua JD, Karcher V, Rittner R, Contreras RH. Experimental and theoretical investigation of NMR 2JHH coupling constant on six-membered ring systems containing oxygen or sulfur atoms. Magnetic Resonance in Chemistry : Mrc. 45: 590-4. PMID 17534874 DOI: 10.1002/mrc.2014  0.6
2007 Tormena CF, Santos FP, Neto AC, Rittner R, Yoshinaga F, Temistocles JC. Electronic interactions and their influence on the conformational stability of trans-2-halocyclopentanol. The Journal of Physical Chemistry. A. 111: 295-8. PMID 17214467 DOI: 10.1021/jp066026f  0.6
2007 Lacerda V, Da Silva GVJ, Tormena CF, Williamson RT, Marquez BL. Long-range JCH heteronuclear coupling constants in cyclopentane derivatives. Part II Magnetic Resonance in Chemistry. 45: 82-86. PMID 17048264 DOI: 10.1002/mrc.1912  0.8
2006 Salles HC, Volsi EC, Marques MR, Souza BM, dos Santos LD, Tormena CF, Mendes MA, Palma MS. The venomous secrets of the web droplets from the viscid spiral of the orb-weaver spider Nephila clavipes (Araneae, Tetragnatidae). Chemistry & Biodiversity. 3: 727-41. PMID 17193305 DOI: 10.1002/cbdv.200690075  0.8
2006 Bocca CC, Basso EA, Fiorin BC, Tormena CF, dos Santos FP. Conformational behavior of cis-2-methoxy, cis-2-methylthio, and cis-2-methylselenocyclohexanol: a theoretical and experimental investigation. The Journal of Physical Chemistry. A. 110: 9438-42. PMID 16869694 DOI: 10.1021/jp061502n  0.8
2006 Contreras RH, Esteban AL, Díez E, Della EW, Lochert IJ, Dos Santos FP, Tormena CF. Experimental and theoretical study of hyperconjugative interaction effects on NMR 1J(CH) scalar couplings. The Journal of Physical Chemistry. A. 110: 4266-75. PMID 16553380 DOI: 10.1021/jp0555201  0.52
2006 Tormena CF, Yoshinaga F, Doi TR, Rittner R. Conformational preferences and orbital interactions for methyl haloacetates. Spectrochimica Acta. Part a, Molecular and Biomolecular Spectroscopy. 63: 511-7. PMID 16359914 DOI: 10.1016/j.saa.2005.05.014  0.6
2006 Lacerda V, da Silva GV, Constantino MG, Tormena CF, Williamson RT, Marquez BL. Long-range J(CH) heteronuclear coupling constants in cyclopentane derivatives. Magnetic Resonance in Chemistry : Mrc. 44: 95-8. PMID 16281189 DOI: 10.1002/mrc.1723  0.8
2005 Tormena CF, Dias LC, Rittner R. Orbital interactions and their effects on 13C NMR chemical shifts for 4,6-disubstituted-2,2-dimethyl-1,3-dioxanes. A theoretical study. The Journal of Physical Chemistry. A. 109: 6077-82. PMID 16833944 DOI: 10.1021/jp052048a  0.6
2005 Cesar LM, Mendes MA, Tormena CF, Marques MR, de Souza BM, Saidemberg DM, Bittencourt JC, Palma MS. Isolation and chemical characterization of PwTx-II: a novel alkaloid toxin from the venom of the spider Parawixia bistriata (Araneidae, Araneae). Toxicon : Official Journal of the International Society On Toxinology. 46: 786-96. PMID 16183095 DOI: 10.1016/j.toxicon.2005.08.005  0.8
2005 Doi TR, Yoshinaga F, Tormena CF, Rittner R, Abraham RJ. 13C NMR, infrared, solvation and theoretical investigation of the conformational isomerism in 1-haloacetones (X = Cl, Br and I). Spectrochimica Acta. Part a, Molecular and Biomolecular Spectroscopy. 61: 2221-30. PMID 15911415 DOI: 10.1016/j.saa.2004.08.021  0.6
2005 Freitas MP, Rittner R, Tormena CF, Abraham RJ. Conformational analysis and stereoelectronic effects in trans-1,2-dihalocyclohexanes: 1H NMR and theoretical investigation. Spectrochimica Acta. Part a, Molecular and Biomolecular Spectroscopy. 61: 1771-6. PMID 15863046 DOI: 10.1016/j.saa.2004.07.007  0.6
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