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Kass, S.R.; DePuy, C.H., Gas phase ion chemistry of azides. The generation of CH=N^- and CH₂=NCH₂^-, J. Org. Chem., 1985, 50, 2874. [all data]

Kass, S.R.; Filley, J.; Van Doren, J.M.; DePuy, C.H., Nitrous oxide in gas-phase ion-molecule chemistry: A versatile reagent for the determination of carbanion structure, J. Am. Chem. Soc., 1986, 108, 2849. [all data]

Shiner, C.S.; Vorner, P.E.; Kass, S.R., Gas phase acidities and heats of formation of 2,4- and 2,5- cyclohexadien-1-one, the keto tautomers of phenol, J. Am. Chem. Soc., 1986, 108, 5699. [all data]

Wiberg, K.B.; Lupton, E.C.; Wasserman, D.J.; de Meijere, A.; Kass, S.R., J. Am. Chem. Soc., 1984, 106, 1740. [all data]

Shiner, C.S.; Vorndam, P.E.; Kass, S.R., Gas-phase acidities and heats of formation of 2,4- and 2,5-cyclohexadien-1-one, the keto tautomers of phenol, J. Am. Chem. Soc., 1986, 108, 5699-5701. [all data]

Chou, P.K.; Kass, S.R., C₄H₄ negative ions: Formation of the bicyclo[1.1.0]but-1(3)-ene radical anion and an experimental determination of the heat of formation of bicyclo[1.1.0]but-1(3)-ene, J. Am. Chem. Soc., 1991, 113, 697-698. [all data]

Staneke, P.O.; Ingemann, S.; Eaton, P.; Nibbering, N.M.M.; Kass, S.R., Formation of the radical anion of cubene and determination of the heat of formation, heat of hydrogenation, and olefin strain energy of cubene, J. Am. Chem. Soc., 1994, 116, 6445-6446. [all data]

Hare, M.; Emrick, T.; Eaton, P.E.; Kass, S.R., Cubyl anion formation and experimental determination of the acidity and C-H bond dissociation energy of cubane, J. Am. Chem. Soc., 1997, 1119, 237-238. [all data]

Meyer, M.M.; Khairallah, G.N.; Kass, S.R.; O'Hair, R.A.J., Gas-Phase Synthesis and Reactivity of the Lithium Acetate Enolate Anion, -CH2CO2Li, Angew. Chem. Intl. Ed. Engl., 2009, 48, 16, 2934-2936, https://doi.org/10.1002/anie.200900245 . [all data]

Meyer, M.M.; Chan, B.; Radom, L.; Kass, S.R., Gas-Phase Synthesis and Reactivity of Lithium Acetylide Ion, Li-C C-, Angew. Chem. Intl. Ed. Engl., 2010, 49, 30, 5161-5164, https://doi.org/10.1002/anie.201001485 . [all data]

Broadus, K.M.; Kass, S.R., Conjugate Base of a Cyclic Hydrazine: Formation and Energetics of N-Diaziridyl Anion, Int. J. Mass Spectrom., 1999, 185, 179, https://doi.org/10.1016/S1387-3806(98)14164-7 . [all data]

Hare, M.C.; Marimanikkuppam, S.S.; Kass, S.R., Acetamide enolate: formation, reactivity, and proton affinity, Int. J. Mass Spectrom., 2001, 210, 153-163, https://doi.org/10.1016/S1387-3806(01)00397-9 . [all data]

Antol, I.; Glasovac, Z.; Hare, M.C.; Eckert-Maksic, M.; Kass, S.R., On the acidity of cyclopropanaphthalenes - Gas phase and computational studies, Int. J. Mass Spectrom., 2003, 222, 1-3, 11-26, https://doi.org/10.1016/S1387-3806(02)00953-3 . [all data]

Dahlke, G.D.; Kass, S.R., The Ortho-dehydrophenoxy Anion, Int. J. Mass Spectrom. Ion Proc., 1992, 117, 633, https://doi.org/10.1016/0168-1176(92)80117-J . [all data]

Kass, S.R.; Chou, P.K., The Bicyclobutyl Anion: An Alkyl Carbanion, J. Am. Chem. Soc., 1988, 110, 23, 7899, https://doi.org/10.1021/ja00231a063 . [all data]

Kroeker, R.L.; Kass, S.R., Diazirinyl Anion: A Cyclic 4-pi Electron System, J. Am. Chem. Soc., 1990, 112, 24, 9024, https://doi.org/10.1021/ja00180a082 . [all data]

Chou, P.K.; Kass, S.R., C4H4 Negative Ions - Formation of the Bicyclo[1.1.0]But-1(3)-Ene Radical Anion and an Experimental Determination of the Heat of Formation of bicyclo[1.1.0]but-1(3)ene., J. Am. Chem. Soc., 1991, 113, 2, 697, https://doi.org/10.1021/ja00002a061 . [all data]

Dahlke, G.D.; Kass, S.R., Substituent Effects in the Gas Phase - 1-Substituted Allyl Anions, J. Am. Chem. Soc., 1991, 113, 15, 5566, https://doi.org/10.1021/ja00015a008 . [all data]

Guo, H.Z.; Kass, S.R., Vinylcyclopropyl Anion - Structure, Reactivity, Thermodynamic Properties, and an Unusual Rearrangement, J. Am. Chem. Soc., 1992, 114, 4, 1244, https://doi.org/10.1021/ja00030a019 . [all data]

Sachs, R.K.; Kass, S.R., 3-Carbomethoxycyclopropen-3-yl Anion - Formation and Characterization of an Antiaromatic Ion, J. Am. Chem. Soc., 1994, 116, 2, 783, https://doi.org/10.1021/ja00081a055 . [all data]

Staneke, P.O.; Ingemann, S.; Eaton, P.; Nibbering, N.M.M.; Kass, S.R., Formation of the radical anion of cubene and determination of the heat of formation, heat of hydrogenation, and olefin strain energy of cube, J. Am. Chem. Soc., 1994, 116, 14, 6445, https://doi.org/10.1021/ja00093a059 . [all data]

Baschky, M.C.; Peterson, K.C.; Kass, S.R., Stereospecificity in the gas phase. Formation and characterization of configurationally stable cyclopropyl anions, J. Am. Chem. Soc., 1994, 116, 16, 7218, https://doi.org/10.1021/ja00095a026 . [all data]

Merrill, G.N.; Dahlke, G.D.; Kass, S.R., beta-Cyanoethyl Anion: Lusus Naturae, J. Am. Chem. Soc., 1996, 118, 18, 4462, https://doi.org/10.1021/ja953796o . [all data]

Hare, M.; Emrick, T.; Eaton, P.E.; Kass, S.R., Cubyl Anion Formation and an Experimental Determination of the Acidity and C-H Bond Dissociation Energy of Cubane, J. Am. Chem. Soc., 1997, 119, 1, 237, https://doi.org/10.1021/ja9627858 . [all data]

Broadus, K.M.; Kass, S.R., Probing Electrostatic Effects: Formation and Characterization of Zwitterionic Ions and their Neutral Counterparts in the Gas Phase, J. Am. Chem. Soc., 2000, 122, 37, 9014, https://doi.org/10.1021/ja0016708 . [all data]

Reed, D.R.; Hare, M.; Kass, S.R., Formation of gas-phase dianions and distonic ions as a general method for the synthesis of protected reactive intermediates. Energetics of 2,3-and 2,6-dehydronaphthalene, J. Am. Chem. Soc., 2000, 122, 43, 10689-10696, https://doi.org/10.1021/ja002351j . [all data]

Broadus, K.M.; Kass, S.R., The electron as a protecting group. 2. Generation of benzocyclobutadiene radical anion in the gas phase and an experimental determination of the heat of formation of benzocyclobutadiene, J. Am. Chem. Soc., 2000, 122, 43, 10697-10703, https://doi.org/10.1021/ja002352b . [all data]

Wang, X.B.; Broadus, K.M.; Wang, L.S.; Kass, S.R., Photodetachment of the first zwitterionic anions in the gas phase: Probing intramolecular Coulomb repulsion and attraction, J. Am. Chem. Soc., 2000, 122, 34, 8305-8306, https://doi.org/10.1021/ja001943z . [all data]

Reed, D.R.; Kass, S.R.; Mondanaro, K.R.; Dailey, W.P., Formation of a 1-bicyclo[1.1.1]pentyl anion and an experimental determination of the acidity and C-H bond dissociation energy of 3-tert-butylbicyclo[1.1.1]pentane, J. Am. Chem. Soc., 2002, 124, 11, 2790-2795, https://doi.org/10.1021/ja0121890 . [all data]

Fattahi, A.; McCarthy, R.E.; Ahmad, M.R.; Kass, S.R., Why does cyclopropene have the acidity of an acetylene but the bond energy of methane?, J. Am. Chem. Soc., 2003, 125, 38, 11746-11750, https://doi.org/10.1021/ja035725s . [all data]

Wang, X.B.; Dacres, J.E.; Yang, X.; Broadus, K.M.; Lis, L.; Wang, L.S.; Kass, S.R., Photodetachment of zwitterions: Probing intramolecular Coulomb repulsion and attraction in the gas phase using pyridinium dicarboxylate anions, J. Am. Chem. Soc., 2003, 125, 1, 296-304, https://doi.org/10.1021/ja028204y . [all data]

Wang, X.B.; Dacres, J.E.; Yang, X.; Lis, L.; Bedell, V.M.; Wang, L.S.; Kass, S.R., Photodetachment of zwitterions: Probing intramolecular Coulomb repulsion and attraction in the gas phase using mono- decarboxylated pyridinium dicarboxylates. Implications on the mechanism o, J. Am. Chem. Soc., 2003, 125, 22, 6814-6826, https://doi.org/10.1021/ja0290835 . [all data]

Tian, Z.X.; Fattahi, A.; Lis, L.; Kass, S.R., Cycloalkane and cycloalkene C-H bond dissociation energies, J. Am. Chem. Soc., 2006, 128, 51, 17087-17092, https://doi.org/10.1021/ja065348u . [all data]

Tian, Z.X.; Pawlow, A.; Poutsma, J.C.; Kass, S.R., Are carboxyl groups the most acidic sites in amino acids? Gas-phase acidity, H/D exchange experiments, and computations on cysteine and its conjugate base, J. Am. Chem. Soc., 2007, 129, 17, 5403-5407, https://doi.org/10.1021/ja0666194 . [all data]

Tian, Z.X.; Wang, X.B.; Wang, L.S.; Kass, S.R., Are Carboxyl Groups the Most Acidic Sites in Amino Acids? Gas-Phase Acidities, Photoelectron Spectra, and Computations on Tyrosine, p-Hydroxybenzoic Acid, and Their Conjugate Bases, J. Am. Chem. Soc., 2009, 131, 3, 1174-1181, https://doi.org/10.1021/ja807982k . [all data]

Shokri, A.; Wang, X.B.; Kass, S.R., Electron-Withdrawing Trifluoromethyl Groups in Combination with Hydrogen Bonds in Polyols: Bronsted Acids, Hydrogen-Bond Catalysts, and Anion Receptors, J. Am. Chem. Soc., 2013, 135, 25, 9525-9530, https://doi.org/10.1021/ja4036384 . [all data]

Kass, S.R.; Guo, H.-Z.; Dahlke, G.D., The Thiomethyl Anion: Formation, Reactivity, and Thermodynamic Properties, J. Am. Soc. Mass Spectrom., 1990, 1, 5, 366, https://doi.org/10.1016/1044-0305(90)85016-F . [all data]

Rabasco, J.J.; Kass, S.R., Reactions of Strong Bases with Vinyl Fluoride Formation and Characterization of 1-Fluorovinyl Anion and the Fluoride-Acetylene Hydrogen-Bond, J. Am. Soc. Mass Spectrom., 1992, 3, 2, 91, https://doi.org/10.1016/1044-0305(92)87041-V . [all data]

Chou, P.K.; Dahlke, G.D.; Kass, S.R., Unimolecular Rearrangements of Carbanions in the Gas Phase .2. Cyclopropyl Anions, J. Chem. Soc. Chem. Comm., 1993, 115, 1, 315, https://doi.org/10.1021/ja00054a045 . [all data]

Broadus, K.M.; Kass, S.R., Benzocyclobutenone enolate: an anion with an antiaromatic resonance structure, J. Chem. Soc. Perkin Trans., 1999, 2, 11, 2389-2396, https://doi.org/10.1039/a905868k . [all data]

Glasovac, Z.; Eckert-Maksic, M.; Dacres, J.E.; Kass, S.R., Gas phase formation of 1-phenylcyclobuten-3-yl and 1- phenylallyl anions and a determination of the allylic C-H acidities and bond dissociation energies of 1-phenylcyclobutene and (E)-1-phen, J. Chem. Soc. Perkin Trans., 2002, 2, 3, 410-415, https://doi.org/10.1039/b111398d . [all data]

Reed, D.R.; Kass, S.R., Experimental determination of the alpha and beta C-H bond dissociation energies in naphthalene, J. Mass Spectrom., 2000, 35, 4, 534-539, https://doi.org/10.1002/(SICI)1096-9888(200004)35:4<534::AID-JMS964>3.0.CO;2-T . [all data]

Meyer, M.M.; Kass, S.R., Enolates in 3-D: An Experimental and Computational Study of Deprotonated 2-Adamantanone, J. Org. Chem., 2010, 75, 12, 4274-4279, https://doi.org/10.1021/jo100953y . [all data]

Fattahi, A.; Lis, L.; Tehrani, Z.A.; Marimanikkuppam, S.S.; Kass, S.R., Experimental and Computational Bridgehead C-H Bond Dissociation Enthalpies, J. Org. Chem., 2012, 77, 4, 1909-1914, https://doi.org/10.1021/jo202519w . [all data]

DePuy, C.H.; Kass, S.R.; Bean, G.P., Formation and Reactions of Heteroaromatic Anions in the Gas Phase, J. Org. Chem., 1988, 53, 19, 4427, https://doi.org/10.1021/jo00254a001 . [all data]

DePuy, C.H.; Van Doren, J.M.; Gronert, S.; Kass, S.R.; Motell, E.L.; Ellison, G.B.; Bierbaum, V.M., Gas-Phase Negative-Ion Chemistry of Diazomethane, J. Org. Chem., 1989, 54, 8, 1846, https://doi.org/10.1021/jo00269a020 . [all data]

Broadus, K.M.; Kass, S.R., Benzocyclobutadienyl anion: Formation and energetics of an antiaromatic molecule, J. Org. Chem., 2000, 65, 20, 6566-6571, https://doi.org/10.1021/jo000709o . [all data]

Gordon, M.S.; Kass, S.R., CHN2-: A biradical anion and a potentially new type of reactive intermediate (vol 99, pg 6548, 1995), J. Phys. Chem. A, 1997, 101, 42, 7922-7922, https://doi.org/10.1021/jp972321b . [all data]

Clifford, E.P.; Wenthold, P.G.; Lineberger, W.C.; Peterssom, G.A.; Broaddus, K.M.; Kass, S.R.; Kato, S., Properties of Diazocarbene [CNN] and the diazomethyl Radical [HCNN] via Ion Chemistry and Spectroscopy, J. Phys. Chem. A, 1998, 102, 36, 7100, https://doi.org/10.1021/jp9802735 . [all data]

Meyer, M.M.; Kass, S.R., Experimental and Theoretical Gas-Phase Acidities, Bond Dissociation Energies, and Heats of Formation of HClOx, x=1-4, J. Phys. Chem. A, 2010, 114, 12, 4086-4092, https://doi.org/10.1021/jp100888k . [all data]

Damrauer, R.; Kass, S.R.; DePuy, C.H., Gas-Phase Acidities of Methylsilanes: C-H versus Si-H, Organomet., 1988, 7, 3, 637, https://doi.org/10.1021/om00093a011 . [all data]

DeBlase, A.F.; Kass, S.R.; Johnson, M.A., On the character of the cyclic ionic H-bond in cryogenically cooled deprotonated cysteine, Phys. Chem. Chem. Phys., 2014, 16, 10, 4569-4575, https://doi.org/10.1039/c3cp54117g . [all data]

Tian, Z.X.; Chan, B.; Sullivan, M.B.; Radom, L.; Kass, S.R., Lithium monoxide anion: A ground-state triplet with the strongest base to date, Proc. Nat. Acad. Sci. US, 2008, 105, 22, 7647-7651, https://doi.org/10.1073/pnas.0801393105 . [all data]