Knowledge (XXG)

Cyclopentadienyl anion

Source 📝

187: 389: 40: 31: 471: 395: 388: 236: 660: 633: 576: 201: 665: 309: 446: 165: 505: 484: 464: 458: 380: 368: 490: 566: 58: 432: 182: 74: 420: 108: 535: 629: 572: 128: 604: 259: 39: 445:
relative to many carbon acids. The enhanced acidity is attributed to stabilization of the
84: 655: 438: 404: 352: 294: 186: 303: 289: 30: 470: 649: 360: 153: 592: 562: 424: 279: 119: 428: 322: 408: 334: 140: 609: 356: 302:
Except where otherwise noted, data are given for materials in their
593:"Noncomparative scaling of aromaticity through electron itinerancy" 469: 364: 107: 97: 568:
Advanced Organic Chemistry: Reactions, Mechanisms, and Structure
442: 591:
Paul, Satadal; Goswami, Tamal; Misra, Anirban (2015-10-01).
170: 38: 29: 571:(6th ed.), New York: Wiley-Interscience, p. 66, 398:Resonance structures of the cyclopentadienyl anion 152: 542:. National Center for Biotechnology Information 83: 8: 474:Metallocene structure where "M" is a metal 463:Cyclopentadienyl anions form a variety of 185: 127: 18: 608: 403:The cyclopentadienyl anion is a planar, 527: 351:. It is formed by the deprotonation of 241: 206: 181: 213:Key: SINKOGOPEQSHQD-UHFFFAOYSA-N 7: 210:InChI=1S/C5H5/c1-2-4-5-3-1/h1-5H/q-1 223:Key: SINKOGOPEQSHQD-UHFFFAOYAD 220:InChI=1/C5H5/c1-2-4-5-3-1/h1-5H/q-1 143: 661:Non-benzenoid aromatic carbocycles 431:provides 2 π-electrons, which are 355:. The cyclopentadienyl anion is a 14: 419: = 1), which fulfills 387: 306:(at 25 °C , 100 kPa). 1: 441:has a pKa of about 16. It is 411:ion; it has 6 π-electrons (4 25: 682: 465:cyclopentadienyl complexes 456: 449:, cyclopentadienyl anion. 378: 337:species with a formula of 624:C. Elschenbroich (2006). 540:PubChem Compound Database 506:Cyclooctatetraenide anion 375:Resonance and aromaticity 300: 284:65.09 g/mol 252: 232: 197: 67: 57: 52: 24: 485:Cyclopentadienyl radical 459:Cyclopentadienyl complex 381:Sodium cyclopentadienide 369:organometallic chemistry 491:Cyclopentadienyl cation 20:Cyclopentadienyl anion 475: 415: + 2, where 327:cyclopentadienyl anion 43: 34: 16:Aromatic ionic species 666:Simple aromatic rings 473: 423:of aromaticity. Each 42: 33: 561:Smith, Michael B.; 536:"Cyclopentadienide" 347:and abbreviated as 21: 476: 310:Infobox references 44: 35: 19: 635:978-3-527-29390-2 610:10.1063/1.4933191 578:978-0-471-72091-1 331:cyclopentadienide 318:Chemical compound 316: 315: 166:CompTox Dashboard 109:Interactive image 62:Cyclopentadienide 48: 47: 673: 640: 639: 621: 615: 614: 612: 588: 582: 581: 558: 552: 551: 549: 547: 532: 517: 516: 515: 502: 501: 500: 435:into the ring. 391: 346: 345: 344: 273: 272: 271: 260:Chemical formula 190: 189: 174: 172: 156: 145: 131: 111: 87: 26: 22: 681: 680: 676: 675: 674: 672: 671: 670: 646: 645: 644: 643: 636: 626:Organometallics 623: 622: 618: 590: 589: 585: 579: 560: 559: 555: 545: 543: 534: 533: 529: 524: 514: 512: 511: 510: 509: 499: 497: 496: 495: 494: 481: 461: 455: 439:Cyclopentadiene 401: 400: 399: 397: 392: 383: 377: 353:cyclopentadiene 343: 341: 340: 339: 338: 319: 312: 307: 295:Cyclopentadiene 270: 268: 267: 266: 265: 262: 248: 245: 240: 239: 228: 225: 224: 221: 215: 214: 211: 205: 204: 193: 183:DTXSID601027108 175: 168: 159: 146: 134: 114: 101: 90: 77: 63: 17: 12: 11: 5: 679: 677: 669: 668: 663: 658: 648: 647: 642: 641: 634: 616: 603:(10): 107211. 583: 577: 553: 526: 525: 523: 520: 519: 518: 513: 503: 498: 488: 480: 477: 457:Main article: 454: 451: 447:conjugate base 394: 393: 386: 385: 384: 376: 373: 342: 317: 314: 313: 308: 304:standard state 301: 298: 297: 292: 290:Conjugate acid 286: 285: 282: 276: 275: 269: 263: 258: 255: 254: 250: 249: 247: 246: 243: 235: 234: 233: 230: 229: 227: 226: 222: 219: 218: 216: 212: 209: 208: 200: 199: 198: 195: 194: 192: 191: 178: 176: 164: 161: 160: 158: 157: 149: 147: 139: 136: 135: 133: 132: 124: 122: 116: 115: 113: 112: 104: 102: 95: 92: 91: 89: 88: 80: 78: 73: 70: 69: 65: 64: 61: 55: 54: 50: 49: 46: 45: 36: 15: 13: 10: 9: 6: 4: 3: 2: 678: 667: 664: 662: 659: 657: 654: 653: 651: 637: 631: 627: 620: 617: 611: 606: 602: 598: 594: 587: 584: 580: 574: 570: 569: 564: 557: 554: 541: 537: 531: 528: 521: 507: 504: 492: 489: 486: 483: 482: 478: 472: 468: 466: 460: 452: 450: 448: 444: 440: 436: 434: 430: 426: 422: 421:Hückel's rule 418: 414: 410: 406: 396: 390: 382: 374: 372: 370: 366: 362: 358: 354: 350: 336: 332: 328: 324: 311: 305: 299: 296: 293: 291: 288: 287: 283: 281: 278: 277: 264: 261: 257: 256: 251: 242: 238: 231: 217: 207: 203: 196: 188: 184: 180: 179: 177: 167: 163: 162: 155: 151: 150: 148: 142: 138: 137: 130: 126: 125: 123: 121: 118: 117: 110: 106: 105: 103: 99: 94: 93: 86: 82: 81: 79: 76: 72: 71: 66: 60: 56: 51: 41: 37: 32: 28: 27: 23: 625: 619: 600: 597:AIP Advances 596: 586: 567: 563:March, Jerry 556: 544:. Retrieved 539: 530: 462: 437: 416: 412: 402: 348: 330: 326: 320: 274:or Cp 68:Identifiers 433:delocalized 425:double bond 253:Properties 650:Categories 522:References 409:pentagonal 407:, regular- 379:See also: 280:Molar mass 120:ChemSpider 96:3D model ( 85:12127-83-2 75:CAS Number 59:IUPAC name 429:lone pair 323:chemistry 565:(2007), 546:14 April 479:See also 335:aromatic 628:. VCH. 154:3490527 141:PubChem 129:2731064 656:Anions 632:  575:  453:Ligand 443:acidic 405:cyclic 359:which 357:ligand 333:is an 325:, the 244:1cccc1 237:SMILES 53:Names 365:metal 363:to a 361:binds 202:InChI 98:JSmol 630:ISBN 573:ISBN 548:2016 427:and 605:doi 367:in 329:or 321:In 171:EPA 144:CID 652:: 599:. 595:. 538:. 508:, 493:, 487:, 467:. 371:. 349:Cp 638:. 613:. 607:: 601:5 550:. 417:n 413:n 173:) 169:( 100:)

Index



IUPAC name
CAS Number
12127-83-2
JSmol
Interactive image
ChemSpider
2731064
PubChem
3490527
CompTox Dashboard
DTXSID601027108
Edit this at Wikidata
InChI
SMILES
Chemical formula
Molar mass
Conjugate acid
Cyclopentadiene
standard state
Infobox references
chemistry
aromatic
cyclopentadiene
ligand
binds
metal
organometallic chemistry
Sodium cyclopentadienide

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.