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Racemic acid

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31: 39: 23: 130:
In two modern-day re-enactments performed in Japan of the Pasteur experiment, it was established that the preparation of crystals was not very reproducible. The crystals deformed, but they were large enough to inspect with the naked eye (microscope not required).
287:"Pour discerner les mélanges et les combinaisons chimiques définies ou non définies, qui agissent sur la lumière polarisée; suivies d'applications aux combinaisons de l'acide tartarique avec l'eau, l'alcool et l'esprit de bois" 75:
is unusual among racemic mixtures in that during crystallization it can separate out into two kinds of crystals, each composed of one isomer, and whose macroscopic crystalline shapes are mirror images of each other. Thus,
289:(In order to discern mixtures and chemical combinations, defined or undefined, which act on polarized light; followed by applications to combinations of tartaric acid with water, alcohol , and spirit of wood ), 80:
was able in 1848 to isolate each of the two enantiomers by laboriously separating the two kinds crystals using delicate tweezers and a hand lens. Pasteur announced his intention to resolve racemic acid in:
171: 308: 87:"Sur les relations qui peuvent exister entre la forme cristalline, la composition chimique et le sens de la polarisation rotatoire" 68:), optically active in opposing directions. Racemic acid does not occur naturally in grape juice, although L-tartaric acid does. 348:
Masao Nakazaki (1979). "Morphology of sodium ammonium tartrate: Pasteur's spontaneous resolution and its reexamination".
218:(On the relations that can exist between crystalline form, chemical composition, and the sense of rotary polarization), 286: 202: 373: 383: 393: 388: 111:
quite possibly for the first time. The optical property of tartaric acid was first observed in 1832 by
398: 244: 86: 101: 403: 408: 247:
and the report of the commission that was appointed to verify Pasteur's findings, pp. 99–117.
17: 172:"Pasteur's Resolution of Racemic Acid: A Sesquicentennial Retrospect and a New Translation" 116: 102:"Recherches sur les propriétés spécifiques des deux acides qui composent l'acide racémique" 331: 276:(Note: This article was read to the French Royal Academy of Sciences on 1832 November 5.) 235:(Investigations into the specific properties of the two acids that compose racemic acid), 8: 273: 257: 378: 194: 127:, or other contemporary mathematicians who studied polytopes, knew of the French work. 112: 43: 258:"Mémoire sur la polarization circulaire et sur ses applications à la chimie organique" 124: 327: 198: 323: 186: 72: 108: 260:(Memoir on circular polarization and on its applications to organic chemistry), 367: 150: 140: 120: 77: 57: 190: 145: 65: 30: 169: 107:
In the latter paper, Pasteur sketches from natural concrete reality
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while he presented his resolution of racemic acid into separate
22: 309:"The reexamination of Pasteur's experiment in Japan" 42:Racemic acid crystals drawn as if seen through an 291:MĂ©moires de l'AcadĂ©mie des sciences de l'Institut 262:MĂ©moires de l'AcadĂ©mie des sciences de l'Institut 365: 34:Computer-rendered image of right-handed molecule 347: 170:George B. Kauffman & Robin Myers (1998). 60:. It is an equal mixture of two mirror-image 306: 272:) rotates plane-polarized light is shown in 52:is an old name for an optically inactive or 316:Mendeleev Communications Electronic Version 37: 29: 21: 366: 268: : 39–175. That tartaric acid ( 115:, who observed its ability to rotate 13: 243:(3) : 56–99. Especially see 14: 420: 237:Annales de Chimie et de Physique 220:Annales de Chimie et de Physique 71:Tartaric acid's sodium-ammonium 328:10.1070/MC2003v013n03ABEH001803 341: 300: 279: 250: 229: 212: 163: 1: 156: 119:. It remains unknown whether 270:acide tartarique cristallisĂ© 7: 134: 26:Tartaric acid in pen sketch 10: 425: 15: 274:Table G following p. 168. 100:Pasteur, Louis (1850) 85:Pasteur, Louis (1848) 46: 35: 27: 307:Yoshito Tobe (2003). 191:10.1007/s00897980257a 179:The Chemical Educator 41: 33: 25: 18:Chirality (chemistry) 226:(3) : 442–459. 374:Alpha hydroxy acids 337:on August 31, 2005. 384:Dicarboxylic acids 113:Jean Baptiste Biot 47: 44:optical microscope 36: 28: 394:Optical materials 389:Food antioxidants 416: 399:Racemic mixtures 358: 357: 350:Kagaku No Ryoiki 345: 339: 338: 336: 330:. Archived from 313: 304: 298: 297: : 93–279. 283: 277: 254: 248: 233: 227: 216: 210: 209: 207: 201:. Archived from 176: 167: 109:chiral polytopes 424: 423: 419: 418: 417: 415: 414: 413: 404:Stereochemistry 364: 363: 362: 361: 346: 342: 334: 311: 305: 301: 284: 280: 255: 251: 234: 230: 217: 213: 205: 174: 168: 164: 159: 137: 125:Ludwig Schläfli 117:polarized light 20: 12: 11: 5: 422: 412: 411: 406: 401: 396: 391: 386: 381: 376: 360: 359: 340: 299: 293:, 2nd series, 278: 264:, 2nd series, 249: 239:, 3rd series, 228: 222:, 3rd series, 211: 208:on 2006-01-17. 161: 160: 158: 155: 154: 153: 148: 143: 136: 133: 105: 104: 96:isomers in: 90: 89: 9: 6: 4: 3: 2: 421: 410: 409:Vicinal diols 407: 405: 402: 400: 397: 395: 392: 390: 387: 385: 382: 380: 377: 375: 372: 371: 369: 355: 351: 344: 333: 329: 325: 321: 317: 310: 303: 296: 292: 288: 282: 275: 271: 267: 263: 259: 253: 246: 242: 238: 232: 225: 221: 215: 204: 200: 196: 192: 188: 184: 180: 173: 166: 162: 152: 151:Uvitonic acid 149: 147: 144: 142: 141:Tartaric acid 139: 138: 132: 128: 126: 122: 121:Arthur Cayley 118: 114: 110: 103: 99: 98: 97: 95: 88: 84: 83: 82: 79: 78:Louis Pasteur 74: 69: 67: 63: 59: 58:tartaric acid 55: 51: 45: 40: 32: 24: 19: 353: 349: 343: 332:the original 322:(3): 93–94. 319: 315: 302: 294: 290: 285:Biot (1838) 281: 269: 265: 261: 256:Biot (1835) 252: 240: 236: 231: 223: 219: 214: 203:the original 182: 178: 165: 129: 106: 91: 70: 50:Racemic acid 49: 48: 146:Uvitic acid 66:enantiomers 368:Categories 356:: 951–962. 185:(6): 1–4. 157:References 16:See also: 379:Chirality 245:Plate II. 199:95862598 135:See also 56:form of 94:optical 62:isomers 54:racemic 197:  335:(PDF) 312:(PDF) 206:(PDF) 195:S2CID 175:(PDF) 73:salt 324:doi 187:doi 123:or 370:: 354:33 352:. 320:13 318:. 314:. 295:15 266:13 241:28 224:24 193:. 181:. 177:. 326:: 189:: 183:3 64:(

Index

Chirality (chemistry)



optical microscope
racemic
tartaric acid
isomers
enantiomers
salt
Louis Pasteur
"Sur les relations qui peuvent exister entre la forme cristalline, la composition chimique et le sens de la polarisation rotatoire"
optical
"Recherches sur les propriétés spécifiques des deux acides qui composent l'acide racémique"
chiral polytopes
Jean Baptiste Biot
polarized light
Arthur Cayley
Ludwig Schläfli
Tartaric acid
Uvitic acid
Uvitonic acid
"Pasteur's Resolution of Racemic Acid: A Sesquicentennial Retrospect and a New Translation"
doi
10.1007/s00897980257a
S2CID
95862598
the original
Plate II.
"MĂ©moire sur la polarization circulaire et sur ses applications Ă  la chimie organique"

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