Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

NOTICE: Due to scheduled maintenance at our Gaithersburg campus, this site will not be available from 5:00 pm EDT (21:00 UTC) on Friday October 25 until 5:00 pm (21:00 UTC) on Sunday October 27. We apologize for any inconvenience this outage may cause.

Species with data from:

Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 .

Due to the large number of matching species, only the first 400 will be shown.

For each matching species the following will be displayed:

Click on the name to see more data.

  1. Benzaldehyde (C7H6O)
  2. Toluene (C7H8)
  3. Camphor (C10H16O)
  4. Benzene (C6H6)
  5. 1-Butanol (C4H10O)
  6. Benzyl alcohol (C7H8O)
  7. Ethylbenzene (C8H10)
  8. Acetic acid (C2H4O2)
  9. Naphthalene (C10H8)
  10. p-Xylene (C8H10)
  11. Ethyl Acetate (C4H8O2)
  12. o-Xylene (C8H10)
  13. Benzene, 1,3-dimethyl- (C8H10)
  14. 1-Propanol, 2-methyl- (C4H10O)
  15. Ethanol (C2H6O)
  16. Phenol (C6H6O)
  17. Cyclohexane (C6H12)
  18. 2,3-Butanedione (C4H6O2)
  19. 2-Pentanone (C5H10O)
  20. Biphenyl (C12H10)
  21. 1-Propanol (C3H8O)
  22. Acetophenone (C8H8O)
  23. 2-Butanone (C4H8O)
  24. Pyridine (C5H5N)
  25. Disulfide, dimethyl (C2H6S2)
  26. Pentanal (C5H10O)
  27. Acetone (C3H6O)
  28. Styrene (C8H8)
  29. Mesitylene (C9H12)
  30. Methyl Alcohol (CH4O)
  31. Benzene, propyl- (C9H12)
  32. Benzene, (1-methylethyl)- (C9H12)
  33. Benzene, 1-methyl-4-(1-methylethenyl)- (C10H12)
  34. Isopropyl Alcohol (C3H8O)
  35. Anthracene (C14H10)
  36. 2-Butanol (C4H10O)
  37. Benzoic acid, methyl ester (C8H8O2)
  38. Benzene, n-butyl- (C10H14)
  39. Naphthalene, 1-methyl- (C11H10)
  40. Propanoic acid (C3H6O2)
  41. Naphthalene, 2-methyl- (C11H10)
  42. n-Propyl acetate (C5H10O2)
  43. Benzoic acid (C7H6O2)
  44. Phenanthrene (C14H10)
  45. Butanoic acid, methyl ester (C5H10O2)
  46. Fluorene (C13H10)
  47. Cyclohexene (C6H10)
  48. Pyrene (C16H10)
  49. Benzene, chloro- (C6H5Cl)
  50. Acetaldehyde (C2H4O)
  51. 1-Hexene (C6H12)
  52. Butyrolactone (C4H6O2)
  53. Acetic acid, methyl ester (C3H6O2)
  54. Butanal (C4H8O)
  55. Propanal, 2-methyl- (C4H8O)
  56. Indole (C8H7N)
  57. Pyridine, 2-methyl- (C6H7N)
  58. Acenaphthene (C12H10)
  59. Thiophene (C4H4S)
  60. Fluoranthene (C16H10)
  61. 2-Propanol, 2-methyl- (C4H10O)
  62. Dimethyl sulfide (C2H6S)
  63. Cyclohexanone (C6H10O)
  64. 3-Pentanone (C5H10O)
  65. Pyrazine (C4H4N2)
  66. Anisole (C7H8O)
  67. Diphenylmethane (C13H12)
  68. Bibenzyl (C14H14)
  69. Propanal (C3H6O)
  70. Naphthalene, 1,2,3,4-tetrahydro- (C10H12)
  71. Ethane (C2H6)
  72. Pyrrole (C4H5N)
  73. Methane (CH4)
  74. Acetonitrile (C2H3N)
  75. Benzaldehyde, 4-methoxy- (C8H8O2)
  76. Ethyl ether (C4H10O)
  77. 2-Butene, 2-methyl- (C5H10)
  78. Cyclopentene (C5H8)
  79. 3-Hexanone (C6H12O)
  80. Pyridine, 3-methyl- (C6H7N)
  81. Benzene, 1,2,3,5-tetramethyl- (C10H14)
  82. Carbon disulfide (CS2)
  83. Ethylene (C2H4)
  84. Aniline (C6H7N)
  85. Furan, 2-methyl- (C5H6O)
  86. Thiophene, 2-methyl- (C5H6S)
  87. 1,4-Dioxane (C4H8O2)
  88. Ethanone, 1-(4-methylphenyl)- (C9H10O)
  89. Propane (C3H8)
  90. 2-Pentenal, (E)- (C5H8O)
  91. Isophorone (C9H14O)
  92. Isobutane (C4H10)
  93. Benzophenone (C13H10O)
  94. Perylene (C20H12)
  95. Tetrahydrofuran (C4H8O)
  96. Propene (C3H6)
  97. Indene (C9H8)
  98. Pyridine, 4-methyl- (C6H7N)
  99. Cyclopentanone (C5H8O)
  100. Ethyl formate (C3H6O2)
  101. Methyl propionate (C4H8O2)
  102. Benzene, nitro- (C6H5NO2)
  103. Cyclopentene, 1-methyl- (C6H10)
  104. 2-Butanone, 3-methyl- (C5H10O)
  105. Quinoline (C9H7N)
  106. Chrysene (C18H12)
  107. Formic acid (CH2O2)
  108. Benzonitrile (C7H5N)
  109. Benzene, bromo- (C6H5Br)
  110. 1,2-Ethanediol (C2H6O2)
  111. Cyclohexene, 1-methyl- (C7H12)
  112. Furan, 2,5-dimethyl- (C6H8O)
  113. 2-Pentene, 2-methyl- (C6H12)
  114. Methane, nitro- (CH3NO2)
  115. Oxygen (O2)
  116. 2-Butene, 2,3-dimethyl- (C6H12)
  117. 1,3-Butadiene (C4H6)
  118. Furan (C4H4O)
  119. 2,6-Lutidine (C7H9N)
  120. 2-Pentanone, 4-hydroxy-4-methyl- (C6H12O2)
  121. «alpha»-Methylstyrene (C9H10)
  122. Dimethyl Sulfoxide (C2H6OS)
  123. 2-Butene, (E)- (C4H8)
  124. Benzyl nitrile (C8H7N)
  125. Benzo[ghi]perylene (C22H12)
  126. 1-Propene, 2-methyl- (C4H8)
  127. Isoprene (C5H8)
  128. Propanenitrile (C3H5N)
  129. Benzene, hexafluoro- (C6F6)
  130. Isopropyl acetate (C5H10O2)
  131. Diethyl sulfide (C4H10S)
  132. Triphenylene (C18H12)
  133. Nitrogen (N2)
  134. Acetylene (C2H2)
  135. Nitric oxide (NO)
  136. Carbon monoxide (CO)
  137. Methanethiol (CH4S)
  138. 4-Heptanone (C7H14O)
  139. Benzene, pentamethyl- (C11H16)
  140. 2-Butanone, 3,3-dimethyl- (C6H12O)
  141. Benzene, hexamethyl- (C12H18)
  142. 3-Penten-2-one, 4-methyl- (C6H10O)
  143. Triethylamine (C6H15N)
  144. Butyl sulfide (C8H18S)
  145. Hydrogen (H2)
  146. Methyl isobutyrate (C5H10O2)
  147. Diisopropyl ether (C6H14O)
  148. Methyl formate (C2H4O2)
  149. Thiazole (C3H3NS)
  150. Dimethyl ether (C2H6O)
  151. Chloromethane (CH3Cl)
  152. 1,3-Cyclopentadiene (C5H6)
  153. Buckminsterfullerene (C60)
  154. Ethyl Chloride (C2H5Cl)
  155. Benzene, fluoro- (C6H5F)
  156. 1,3-Cyclohexadiene (C6H8)
  157. Ethylene oxide (C2H4O)
  158. Propyl mercaptan (C3H8S)
  159. Pyridine, 2,4-dimethyl- (C7H9N)
  160. 3-Pentanone, 2,4-dimethyl- (C7H14O)
  161. Pyrrolidine (C4H9N)
  162. Tetrafluoromethane (CF4)
  163. 5-Nonanone (C9H18O)
  164. 1,4-Cyclohexadiene (C6H8)
  165. Butanenitrile (C4H7N)
  166. Cyclopropane (C3H6)
  167. Ethanethiol (C2H6S)
  168. Ethanamine, N-ethyl- (C4H11N)
  169. Propyne (C3H4)
  170. Thiophene, tetrahydro- (C4H8S)
  171. Benzenamine, N,N-dimethyl- (C8H11N)
  172. 3-Penten-2-one (C5H8O)
  173. 2-Butenal (C4H6O)
  174. Piperidine (C5H11N)
  175. Carbon dioxide (CO2)
  176. Formamide, N,N-dimethyl- (C3H7NO)
  177. Di-n-propyl ether (C6H14O)
  178. Methyl methacrylate (C5H8O2)
  179. n-Butyl ether (C8H18O)
  180. Ferrocene (C10H10Fe)
  181. 2-Propenenitrile (C3H3N)
  182. Isoquinoline (C9H7N)
  183. Propane, 2-methoxy-2-methyl- (C5H12O)
  184. Water (H2O)
  185. Sulfur hexafluoride (F6S)
  186. Methane, iodo- (CH3I)
  187. o-Toluidine (C7H9N)
  188. 2-Norbornene (C7H10)
  189. Acetylacetone (C5H8O2)
  190. 1,3-Pentadiene, (E)- (C5H8)
  191. Naphthacene (C18H12)
  192. Propylamine (C3H9N)
  193. 1-Butanamine (C4H11N)
  194. Coronene (C24H12)
  195. Pentanenitrile (C5H9N)
  196. 2-Propenal (C3H4O)
  197. Acridine (C13H9N)
  198. Formic acid, propyl ester (C4H8O2)
  199. Pyridine, 2-ethyl- (C7H9N)
  200. 1-Butanethiol (C4H10S)
  201. Propylene oxide (C3H6O)
  202. Propyl sulfide (C6H14S)
  203. Azulene (C10H8)
  204. Chlorotrifluoromethane (CClF3)
  205. Tetrahydropyran (C5H10O)
  206. Methane, bromo- (CH3Br)
  207. p-Aminotoluene (C7H9N)
  208. Pyridine, 3-ethyl- (C7H9N)
  209. 1,1'-Biphenyl, 4-methyl- (C13H12)
  210. Ethyl bromide (C2H5Br)
  211. Ethane, iodo- (C2H5I)
  212. 1-Heptanamine (C7H17N)
  213. Sulfur dioxide (O2S)
  214. Anthracene, 1,2,3,4,5,6,7,8-octahydro- (C14H18)
  215. 1-Hexyne (C6H10)
  216. Pyridine, 2,5-dimethyl- (C7H9N)
  217. Phenylethyne (C8H6)
  218. Methylamine, N,N-dimethyl- (C3H9N)
  219. Hydrogen sulfide (H2S)
  220. Pyridine, 3,5-dimethyl- (C7H9N)
  221. Ethane, nitro- (C2H5NO2)
  222. 2-Pentene, 2,4-dimethyl- (C7H14)
  223. Ammonia (H3N)
  224. Glycerin (C3H8O3)
  225. Thiazole, 2-methyl- (C4H5NS)
  226. Ethanol, 2-methoxy- (C3H8O2)
  227. Methyl vinyl ketone (C4H6O)
  228. Hydroxyl radical (HO)
  229. 2-Butyne (C4H6)
  230. Carbonyl sulfide (COS)
  231. Nitrous oxide (N2O)
  232. 2-Butenal, 3-methyl- (C5H8O)
  233. Benzenamine, 3-methyl- (C7H9N)
  234. Hydrogen chloride (ClH)
  235. 2-Propanethiol (C3H8S)
  236. 4-Acetylanisole (C9H10O2)
  237. Ethylamine (C2H7N)
  238. Pyridine, 2,3-dimethyl- (C7H9N)
  239. Benzaldehyde, 4-methyl- (C8H8O)
  240. Pyridine, 3,4-dimethyl- (C7H9N)
  241. Anthracene, 2-methyl- (C15H12)
  242. Acetic acid ethenyl ester (C4H6O2)
  243. Methylamine (CH5N)
  244. Ethane, (methylthio)- (C3H8S)
  245. Chromium hexacarbonyl (C6CrO6)
  246. Hydrogen cyanide (CHN)
  247. Benzene, 1-chloro-4-methyl- (C7H7Cl)
  248. Benzene, 1-methyl-4-nitro- (C7H7NO2)
  249. 1,3-Butadiene, 2,3-dimethyl- (C6H10)
  250. Fluoroform (CHF3)
  251. 2-Propanethiol, 2-methyl- (C4H10S)
  252. 2-Chloroethanol (C2H5ClO)
  253. Benzene, 1-chloro-2-methyl- (C7H7Cl)
  254. 2,5-Norbornadiene (C7H8)
  255. Formic acid, butyl ester (C5H10O2)
  256. p-Benzoquinone (C6H4O2)
  257. 1-Pentanamine (C5H13N)
  258. 1,3-Propanediol (C3H8O2)
  259. Dimethylamine (C2H7N)
  260. 1-Hexanamine (C6H15N)
  261. 1-Propanethiol, 2-methyl- (C4H10S)
  262. Formaldehyde (CH2O)
  263. Triethyl phosphate (C6H15O4P)
  264. 1-Propanone, 1-phenyl- (C9H10O)
  265. 1-Octanamine (C8H19N)
  266. Allene (C3H4)
  267. 2-Propanamine, 2-methyl- (C4H11N)
  268. Propane, 2-ethoxy-2-methyl- (C6H14O)
  269. Aniline, N-methyl- (C7H9N)
  270. Stannane, tetramethyl- (C4H12Sn)
  271. Iron pentacarbonyl (C5FeO5)
  272. 1,1'-Biphenyl, 2-methyl- (C13H12)
  273. 1,2-Butadiene (C4H6)
  274. 1,4-Butanediol (C4H10O2)
  275. Ethane, 1,2-dimethoxy- (C4H10O2)
  276. Benzene, 1-ethenyl-3-methyl- (C9H10)
  277. 2-Hexyne (C6H10)
  278. Acetamide (C2H5NO)
  279. Nickel tetracarbonyl (C4NiO4)
  280. Benzene, 1-ethenyl-4-methyl- (C9H10)
  281. Cycloheptanone (C7H12O)
  282. Ethylenediamine (C2H8N2)
  283. 2-Propenoic acid, methyl ester (C4H6O2)
  284. 1-Propanamine, N-propyl- (C6H15N)
  285. Difluoromethane (CH2F2)
  286. Benzoic acid, 4-methoxy-, methyl ester (C9H10O3)
  287. Diisopropylamine (C6H15N)
  288. Cyanogen (C2N2)
  289. p-Nitroaniline (C6H6N2O2)
  290. Isobutyronitrile (C4H7N)
  291. 1-Butanamine, N-butyl- (C8H19N)
  292. 2-Pyrrolidinone, 1-methyl- (C5H9NO)
  293. Benzene, 1-bromo-2-methyl- (C7H7Br)
  294. 1,1'-Biphenyl, 3-methyl- (C13H12)
  295. Biphenylene (C12H8)
  296. Benzyl methyl ketone (C9H10O)
  297. Isobutylamine (C4H11N)
  298. hydrogen fluoride (FH)
  299. Hydrogen bromide (BrH)
  300. 1,3-Dioxane (C4H8O2)
  301. Benzene, 1-ethenyl-2-methyl- (C9H10)
  302. 1-Naphthalenamine (C10H9N)
  303. Cyclohexylamine (C6H13N)
  304. 1H-Imidazole (C3H4N2)
  305. Methyl fluoride (CH3F)
  306. 1,3-Dioxolan-2-one (C3H4O3)
  307. 2-Butanethiol (C4H10S)
  308. 2-Propanamine (C3H9N)
  309. Tungsten hexacarbonyl (C6O6W)
  310. p-Chloroaniline (C6H6ClN)
  311. Molybdenum hexacarbonyl (C6MoO6)
  312. Cyclopentane, methylene- (C6H10)
  313. Ethane, methoxy- (C3H8O)
  314. Pyridine, 4-ethyl- (C7H9N)
  315. Nikethamide (C10H14N2O)
  316. Methyl thiolacetate (C3H6OS)
  317. Cyano radical (CN)
  318. Trimethylene oxide (C3H6O)
  319. Benzylamine (C7H9N)
  320. Picene (C22H14)
  321. Benzene, pentafluoro- (C6HF5)
  322. n-Amyl ether (C10H22O)
  323. Benzene, 1-chloro-3-methyl- (C7H7Cl)
  324. Methylene, difluoro- (CF2)
  325. 1H-Pyrrole, 2,5-dimethyl- (C6H9N)
  326. 1,3-Butadiyne (C4H2)
  327. 2,6-Xylidine (C8H11N)
  328. Hydrazine, 1,1-dimethyl- (C2H8N2)
  329. 1-Propanamine, N,N-dipropyl- (C9H21N)
  330. 1,4-Benzenedicarboxylic acid, dimethyl ester (C10H10O4)
  331. Morpholine (C4H9NO)
  332. Monoethanolamine (C2H7NO)
  333. Nitric acid (HNO3)
  334. Phenanthrene, 1,2,3,4,5,6,7,8-octahydro- (C14H18)
  335. Cyclobutanone (C4H6O)
  336. 2H-Thiopyran, tetrahydro- (C5H10S)
  337. Hydroperoxy radical (HO2)
  338. Argon (Ar)
  339. Piperidine, 1-methyl- (C6H13N)
  340. 1,3-Benzenedicarboxylic acid, dimethyl ester (C10H10O4)
  341. N,N-Dimethylacetamide (C4H9NO)
  342. Triethylenediamine (C6H12N2)
  343. Thiirane, methyl- (C3H6S)
  344. Bromotrifluoromethane (CBrF3)
  345. Furan, 3-methyl- (C5H6O)
  346. Phenazine (C12H8N2)
  347. Anthracene, 9-methyl- (C15H12)
  348. Formic acid, 1-methylethyl ester (C4H8O2)
  349. m-Chloroaniline (C6H6ClN)
  350. 1-Propanol, 2,2-dimethyl- (C5H12O)
  351. Thietane (C3H6S)
  352. Nickelocene (C10H10Ni)
  353. Ethynyl radical (C2H)
  354. Nitrogen dioxide (NO2)
  355. sec-Butylamine (C4H11N)
  356. Tricarbon (C3)
  357. phosphorus (P)
  358. Diborane (B2H6)
  359. sulfur (S)
  360. Hydrazine (H4N2)
  361. Cyclooctanone (C8H14O)
  362. 1-Decanamine (C10H23N)
  363. barium oxide, obtained by calcining witherite (BaO)
  364. Diisopropyl sulfide (C6H14S)
  365. Thiirane (C2H4S)
  366. Tributylamine (C12H27N)
  367. Benzene, (methylthio)- (C7H8S)
  368. fluorine (F2)
  369. Benzenamine, N-ethyl- (C8H11N)
  370. 2,4-Dimethylfuran (C6H8O)
  371. Hydrogen peroxide (H2O2)
  372. 1,3-Diazine (C4H4N2)
  373. Ethene, 1,1-difluoro- (C2H2F2)
  374. Butane, 1-methoxy- (C5H12O)
  375. 2-Pentyne (C5H8)
  376. N,N-Diethylaniline (C10H15N)
  377. silicon monoxide (OSi)
  378. Ketene (C2H2O)
  379. Silane (H4Si)
  380. Methyl nicotinate (C7H7NO2)
  381. Cyclohexanone, 4-methyl- (C7H12O)
  382. Phosphine (H3P)
  383. Methylparaben (C8H8O3)
  384. Formyl radical (CHO)
  385. 1H-Pyrazole (C3H4N2)
  386. Benzene, 1-bromo-4-methyl- (C7H7Br)
  387. Piperazine (C4H10N2)
  388. Phosphoric acid, trimethyl ester (C3H9O4P)
  389. Methyl propyl ether (C4H10O)
  390. Formamide (CH3NO)
  391. 2-Butenoic acid, methyl ester, (E)- (C5H8O2)
  392. Ozone (O3)
  393. Disiloxane, hexamethyl- (C6H18OSi2)
  394. 2,5-Hexanedione (C6H10O2)
  395. Pyrrolidine, 1-methyl- (C5H11N)
  396. Xenon (Xe)
  397. Methacrolein (C4H6O)
  398. Benzaldehyde, 3-methyl- (C8H8O)
  399. Benzene, cyclopropyl- (C9H10)
  400. Strontium monoxide (OSr)