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Redistribution (chemistry)

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reactions. Some useful redistribution reactions are conducted at higher temperatures; upon cooling the mixture, the product mixture is kinetically frozen and the individual products can be separated. In cases where redistribution is rapid at mild temperatures, the reaction is less useful
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Redistribution reactions are exhibited by methylboranes. Thus monomethyldiborane rapidly converts at room temperature to
391: 386: 163:, the mixed alkyl tin chlorides are produced by redistribution, a reaction called the Kocheshkov comproportionation: 345: 259:
Greenwood, N. N.; & Earnshaw, A. (1997). Chemistry of the Elements (2nd Edn.), Oxford:Butterworth-Heinemann.
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undergo redistribution reactions, usually to afford nearly statistical mixtures of products. For example,
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Many mixed organo-chloro derivatives of many metalloids are produced in this manner. In one example,
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redistribute their halide ligands, one of many reactions in this conversion is shown:
132:, but it can be converted (recycled) into more useful products by redistribution with 380: 232:
Bell, R. P.; Emeléus, H. J. (1948). "The Boron Hydrides and Related Compounds".
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bonded to metal and metalloid centers. The conversion does not involve
366: 184: 21: 346:"Intermolecular Self-Interactions of the Titanium Tetrahalides TiX 25: 250:. The authors refer to redistributions as "disproportionations". 311:
G. G. Graf (2005). "Tin, Tin Alloys, and Tin Compounds".
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is an undesirable product of the industrially important
282:. Inorganic Syntheses. Vol. 15. pp. 149–153. 280:
Chlorodiethylborane and Chlorodiphenylborane" 2007;
33:synthetically but still important mechanistically. 313:Ullmann's Encyclopedia of Industrial Chemistry 77:Useful redistribution reactions are found in 8: 20:usually refers to the exchange of anionic 224: 7: 344:S. P. Webb and M. S. Gordon (1999). 234:Quarterly Reviews, Chemical Society 14: 278:Köster, R.; Binger, P. (2007). 1: 408: 288:10.1002/9780470132463.ch33 321:10.1002/14356007.a27_049 315:. Weinheim: Wiley-VCH. 87:organosilicon chemistry 189:titanium tetrachloride 193:titanium tetrabromide 134:silicon tetrachloride 246:10.1039/QR9480200132 124:In another example, 161:organotin chemistry 392:Chemical processes 387:Chemical reactions 30:disproportionation 367:10.1021/ja983339i 361:(11): 2552–2560. 355:J. Am. Chem. Soc. 126:tetramethylsilane 28:, in contrast to 399: 371: 370: 350:(X = F, Cl, Br)" 341: 335: 334: 308: 302: 301: 274: 268: 257: 251: 249: 229: 407: 406: 402: 401: 400: 398: 397: 396: 377: 376: 375: 374: 349: 343: 342: 338: 331: 310: 309: 305: 298: 277: 275: 271: 258: 254: 231: 230: 226: 221: 214: 210: 206: 202: 178: 174: 170: 155: 151: 147: 143: 120: 116: 112: 108: 104: 100: 96: 79:organoaluminium 72: 68: 64: 60: 56: 47:trimethylborane 39: 12: 11: 5: 405: 403: 395: 394: 389: 379: 378: 373: 372: 347: 336: 330:978-3527306732 329: 303: 296: 269: 252: 223: 222: 220: 217: 216: 215: 212: 208: 204: 200: 181: 180: 176: 172: 168: 157: 156: 153: 149: 145: 141: 130:direct process 122: 121: 118: 114: 110: 106: 102: 98: 94: 75: 74: 70: 66: 62: 58: 54: 38: 35: 18:redistribution 16:In chemistry, 13: 10: 9: 6: 4: 3: 2: 404: 393: 390: 388: 385: 384: 382: 368: 364: 360: 357: 356: 351: 340: 337: 332: 326: 322: 318: 314: 307: 304: 299: 297:9780470132463 293: 289: 285: 281: 273: 270: 266: 265:0-7506-3365-4 262: 256: 253: 247: 243: 239: 235: 228: 225: 218: 198: 197: 196: 194: 190: 186: 166: 165: 164: 162: 139: 138: 137: 135: 131: 127: 92: 91: 90: 88: 84: 80: 52: 51: 50: 48: 44: 36: 34: 31: 27: 23: 19: 358: 353: 339: 312: 306: 279: 272: 255: 237: 233: 227: 182: 158: 123: 76: 40: 17: 15: 183:Many metal 109:→ 3 BCl(C 83:organoboron 381:Categories 240:(2): 132. 219:References 207:→ 2 TiBr 175:→ 4 SnBu 148:→ 2 SiMe 97:+ 2 B(C 43:diborane 37:Examples 203:+ TiBr 185:halides 171:+ SnCl 144:+ SiCl 69:+ 2 Me 22:ligands 327:  294:  263:  167:3 SnBu 85:, and 61:→ 5 B 53:6 MeB 26:redox 325:ISBN 292:ISBN 261:ISBN 199:TiCl 191:and 140:SiMe 45:and 363:doi 359:121 317:doi 284:doi 242:doi 159:In 93:BCl 383:: 352:. 323:. 290:. 236:. 211:Cl 179:Cl 152:Cl 136:: 89:. 81:, 49:: 369:. 365:: 348:4 333:. 319:: 300:. 286:: 267:. 248:. 244:: 238:2 213:2 209:2 205:4 201:4 177:3 173:4 169:4 154:2 150:2 146:4 142:4 119:2 117:) 115:5 113:H 111:2 107:3 105:) 103:5 101:H 99:2 95:3 73:B 71:3 67:6 65:H 63:2 59:5 57:H 55:2

Index

ligands
redox
disproportionation
diborane
trimethylborane
organoaluminium
organoboron
organosilicon chemistry
tetramethylsilane
direct process
silicon tetrachloride
organotin chemistry
halides
titanium tetrachloride
titanium tetrabromide
doi
10.1039/QR9480200132
ISBN
0-7506-3365-4
doi
10.1002/9780470132463.ch33
ISBN
9780470132463
doi
10.1002/14356007.a27_049
ISBN
978-3527306732
"Intermolecular Self-Interactions of the Titanium Tetrahalides TiX4 (X = F, Cl, Br)"
J. Am. Chem. Soc.
doi

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