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Tripodal ligand

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Schwarzenbach, Gerold; Bßrgi, Hans-Beat; Jensen, William P.; Lawrance, Geoffrey A.; Mønsted, Lene; Sargeson, Alan M. (1983). "Acid Cleavage of Nickel(Ii) Complexes Containing cis,cis-1,3,5-Cyclohexanetriamine (TACH), Crystal Structure of
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Aimee J. Gamble; Jason M. Lynam; Robert J. Thatcher; Paul H. Walton; Adrian C. Whitwood (2013). "cis-1,3,5-Triaminocyclohexane as a Facially Capping Ligand for Ruthenium(II)".
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positions available on the octahedral metal center. When bound to four- and five-coordinate metal centres, these ligands impose C
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Parkin, G. (2000). "The Bioinorganic Chemistry of Zinc: Synthetic Analogues of Zinc Enzymes that Feature Tripodal Ligands".
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NTA is a commercially important tripodal ligand. Its three carboxylic acid groups undergo deprotonation upon complexation.
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are also tripodal. Many kinds of donor groups have been incorporated into the arms of tripodal ligands, including amido
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because it is cheaply produced and has a high affinity for divalent metal ions. Other tripodal triamine ligands include
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Blackman, A. G. (2008). "Tripodal Tetraamine Ligands Containing Three Pyridine Units: the other polypyridyl ligands".
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splitting patterns. Tripodal ligands are often able to coordinately saturate metal ions with lower
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Structure of (color code: blue = nitrogen, red = oxygen, dark blue = nickel).
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Verkade, J. G. (1993). "Atranes: New Examples with Unexpected Properties".
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Motifs for complexation of tri- and tetradentate tripodal ligands
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tripodal ligands occupy four contiguous sites, leaving two
73:tripod ligands occupy one face, leading to a fixed 104:One tripodal ligand of commercial significance is 527: 479: 38:. They are popular in research in the areas of 353: 140:) and cis-1,3,5-triaminocyclohexane. Certain 465:: CS1 maint: multiple names: authors list ( 210:, a tetradentate tripodal ligand popular in 506: 442: 56: 195:, X can be CR, SiR, Si, BR, B, N, P etc. 170: 15: 528: 230:, an anionic tridentate tripod ligand. 417:Saouma, C. T., Peters, J. C. (2011). 93:symmetry, which can lead to uncommon 258:, a dianionic organometallic ligand. 13: 14: 547: 285:cis,cis-1,3,5-triaminocyclohexane 291: 277: 263: 247: 235: 226:Structure of a metal complex of 219: 200: 184: 500: 473: 410: 374: 347: 312: 1: 306: 271:1,1,1-Tris(aminomethyl)ethane 67:octahedral molecular geometry 7: 10: 552: 208:Tris(2-pyridylmethyl)amine 435:10.1016/j.ccr.2011.01.009 180:Tripodal Ligands Examples 509:Chemical Communications 166:N-heterocyclic carbenes 494:10.1002/ejic.200800115 212:bioinorganic chemistry 176: 63:coordination complexes 57:Coordination chemistry 40:coordination chemistry 21: 174: 44:homogeneous catalysis 19: 99:coordination numbers 482:Eur. J. Inorg. Chem 404:10.1021/ic00168a042 392:Inorganic Chemistry 368:10.1021/ar00033a005 228:trispyrazolylborate 177: 22: 511:(20): 1971–1985. 398:(26): 4029–4038. 333:10.1021/ic302819j 106:nitrilotriacetate 81:) geometry. The 543: 536:Tripodal ligands 521: 520: 517:10.1039/B004816J 504: 498: 497: 477: 471: 470: 464: 456: 446: 429:(7–8): 920–937. 423:Coord. Chem. Rev 414: 408: 407: 378: 372: 371: 351: 345: 344: 327:(8): 4517–4527. 316: 295: 281: 267: 251: 239: 223: 204: 188: 163: 25:Tripodal ligands 551: 550: 546: 545: 544: 542: 541: 540: 526: 525: 524: 505: 501: 478: 474: 458: 457: 415: 411: 389: 385: 379: 375: 352: 348: 317: 313: 309: 302: 296: 287: 282: 273: 268: 259: 252: 243: 240: 231: 224: 215: 205: 196: 189: 161: 157: 155: 151: 147: 139: 135: 131: 127: 119: 115: 111: 92: 59: 49: 12: 11: 5: 549: 539: 538: 523: 522: 499: 472: 409: 387: 383: 373: 356:Acc. Chem. Res 346: 310: 308: 305: 304: 303: 297: 290: 288: 283: 276: 274: 269: 262: 260: 253: 246: 244: 241: 234: 232: 225: 218: 216: 206: 199: 197: 190: 183: 181: 159: 153: 149: 145: 137: 133: 129: 125: 117: 113: 109: 90: 58: 55: 47: 9: 6: 4: 3: 2: 548: 537: 534: 533: 531: 518: 514: 510: 503: 495: 491: 487: 483: 476: 468: 462: 454: 450: 445: 440: 436: 432: 428: 424: 420: 413: 405: 401: 397: 393: 377: 369: 365: 361: 357: 350: 342: 338: 334: 330: 326: 322: 315: 311: 300: 294: 289: 286: 280: 275: 272: 266: 261: 257: 250: 245: 238: 233: 229: 222: 217: 213: 209: 203: 198: 194: 193:triphosphines 187: 182: 179: 178: 173: 169: 167: 144:such as RC(CH 143: 142:triphosphines 123: 107: 102: 100: 96: 88: 84: 80: 76: 72: 68: 64: 54: 52: 45: 41: 37: 34: 30: 26: 18: 508: 502: 488:(17): 2633. 485: 481: 475: 461:cite journal 426: 422: 412: 395: 391: 376: 359: 355: 349: 324: 320: 314: 256:Kläui ligand 103: 95:ligand field 86: 83:tetradentate 78: 60: 33:tetradentate 24: 23: 321:Inorg. Chem 299:citric acid 191:A tripodal 362:(9): 483. 307:References 71:tridentate 61:In their 530:Category 453:21625302 341:23517123 65:with an 51:symmetry 444:3103469 36:ligands 451:  441:  339:  164:, and 108:, N(CH 75:facial 124:(N(CH 486:2008 467:link 449:PMID 337:PMID 254:The 122:tren 77:(or 69:the 42:and 31:and 29:tri- 27:are 513:doi 490:doi 439:PMC 431:doi 427:255 400:doi 382:(NO 364:doi 329:doi 148:PPh 87:cis 79:fac 532:: 484:. 463:}} 459:{{ 447:. 437:. 425:. 421:. 396:22 394:. 360:26 358:. 335:. 325:52 323:. 168:. 162:N) 158:(R 132:NH 128:CH 112:CO 101:. 53:. 519:. 515:: 496:. 492:: 469:) 455:. 433:: 406:. 402:: 388:2 386:) 384:3 370:. 366:: 343:. 331:: 214:. 160:2 154:3 152:) 150:2 146:2 138:3 136:) 134:2 130:2 126:2 118:3 116:) 114:2 110:2 91:3 48:3

Index


tri-
tetradentate
ligands
coordination chemistry
homogeneous catalysis
symmetry
coordination complexes
octahedral molecular geometry
tridentate
facial
tetradentate
ligand field
coordination numbers
nitrilotriacetate
tren
triphosphines
N-heterocyclic carbenes

A tripodal triphosphines, X can be CR, SiR, Si−, BR−, B, N, P etc.
triphosphines
Tris(2-pyridylmethyl)amine, a tetradentate tripodal ligand popular in bioinorganic chemistry.
Tris(2-pyridylmethyl)amine
bioinorganic chemistry
Structure of a metal complex of trispyrazolylborate, an anionic tridentate tripod ligand.
trispyrazolylborate
NTA is a commercially important tripodal ligand. Its three carboxylic acid groups undergo deprotonation upon complexation.
The Kläui ligand, a dianionic organometallic ligand.
Kläui ligand
1,1,1-Tris(aminomethyl)ethane

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