192:
117:
27:
308:
74:
629:
Baker, Joe; Engelhardt, Lutz M.; Figgis, Brian N.; White, Allan H. (1975). "Crystal
Structure, Electron Spin Resonance, and Magnetism of Tris(o-Phenanthroline)Iron(III) Perchlorate Hydrate".
532:
Ferroin is suitable as a redox indicator, as the color change is reversible, very pronounced and rapid, and the ferroin solution is stable up to 60 °C. It is the main indicator used in
594:
Sattar, Simeen (2011). "A Unified
Kinetics and Equilibrium Experiment: Rate Law, Activation Energy, and Equilibrium Constant for the Dissociation of Ferroin".
492:
321:
542:, the complex of iron(II) with 5-nitro-1,10-phenanthroline, has transition potential of +1.25 volts. It is more stable than ferroin, but in
241:
557:
The redox potential of the iron-phenanthroline complex can be varied between +0.84 V and +1.10 V by adjusting the position and number of
26:
575:
485:
696:
665:
371:. The structures of and are almost identical, consistent with both being low-spin. These cations are octahedral with D
570:
526:
478:
206:
316:
328:
215:
InChI=1S/3C12H8N2.Fe.H2O4S/c3*1-3-9-5-6-10-4-2-8-14-12(10)11(9)13-7-1;;1-5(2,3)4/h3*1-8H;;(H2,1,2,3,4)/q;;;+2;/p-2
225:
InChI=1/3C12H8N2.Fe.H2O4S/c3*1-3-9-5-6-10-4-2-8-14-12(10)11(9)13-7-1;;1-5(2,3)4/h3*1-8H;;(H2,1,2,3,4)/q;;;+2;/p-2
517:
that can be oxidized to the ferric derivative . The potential for this redox change is +1.06 volts in 1 M H
359:, a bidentate ligand. The term "ferroin" is used loosely and includes salts of other anions such as chloride.
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with Ce ion it requires significant excess of the titrant. It is however useful for titration in
686:
506:
368:
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249:.S()(=O)=O.n3c2c1ncccc1ccc2ccc3.n3c2c1ncccc1ccc2ccc3.n1c3c(ccc1)ccc2cccnc23
638:
551:
514:
287:
85:
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402:
The main reaction is 1-electron oxidation. → + 1 e
Addition of
379:
298:
Except where otherwise noted, data are given for materials in their
73:
125:
558:
525:. It is a popular redox indicator for visualizing oscillatory
63:
175:
628:
688:
Handbook on the
Physics and Chemistry of Rare Earths
631:
Journal of the
Chemical Society, Dalton Transactions
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554:solution, where cerium redox potential is higher.
513:. The active ingredient is the ion, which is a
709:
433:
137:
49:
681:
679:
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406:to an aqueous solution of causes hydrolysis:
660:(4th ed.). New York, NY: W. H. Freeman.
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390:Ferroin sulfate may be prepared by combining
367:Many salts of 2+ have been characterized by
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218:Key: CIWXFRVOSDNDJZ-UHFFFAOYSA-L
16:Complex of Fe by ortho-phenanthroline
564:
561:groups on the phenanthroline core.
228:Key: CIWXFRVOSDNDJZ-NUQVWONBAU
128:
13:
429:
355:-phen is an abbreviation for 1,10-
14:
739:
691:. Elsevier. 2006. pp. 289–.
378:. The Fe-N distances are 197.3
306:
25:
302:(at 25 °C , 100 kPa).
656:Quantitative Chemical Analysis
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622:
587:
576:[Tris(bipyridine)ruthenium(II)
527:Belousov–Zhabotinsky reactions
1:
596:Journal of Chemical Education
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394:to ferrous sulfate in water.
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7:
509:is used as an indicator in
10:
744:
292:596.27 g/mol
571:[Tris(bipyridine)iron(II)
471:
436:
386:Preparation and reactions
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257:
237:
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33:
24:
652:Harris, D. C. (1995).
438:Phenanthroline Fe(II)
369:X-ray crystallography
639:10.1039/DT9750000530
511:analytical chemistry
608:2011JChEd..88..457S
398:3 phen + Fe →
347:with the formula SO
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329:Infobox references
19:
698:978-0-08-046672-9
667:978-0-7167-2508-4
616:10.1021/ed100797s
565:Related complexes
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345:chemical compound
337:Chemical compound
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171:CompTox Dashboard
75:Interactive image
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718:Redox indicators
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265:Chemical formula
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728:Phenanthrolines
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548:perchloric acid
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442:Redox indicator
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430:Redox indicator
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723:Iron complexes
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602:(4): 457–460.
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452:= 1.06 V
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422:O → + 3 HSO
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392:phenanthroline
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357:phenanthroline
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544:sulfuric acid
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540:Nitroferroin
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34:Identifiers
552:nitric acid
515:chromophore
474:This box:
258:Properties
113:100.035.145
712:Categories
633:(6): 530.
582:References
288:Molar mass
159:YP88WTW2E4
86:ChemSpider
62:3D model (
51:14634-91-4
41:CAS Number
534:cerimetry
363:Structure
466:Oxidized
462:↔
458:Reduced.
351:, where
20:Ferroin
604:Bibcode
507:complex
343:is the
341:Ferroin
322:what is
320: (
282:
126:PubChem
695:
664:
559:methyl
418:+ 6 H
317:verify
314:
242:SMILES
505:This
410:+ 3 H
207:InChI
139:84567
95:76289
64:JSmol
693:ISBN
662:ISBN
494:edit
487:talk
480:view
150:UNII
635:doi
612:doi
550:or
278:FeN
176:EPA
129:CID
714::
676:^
610:.
600:88
598:.
536:.
529:.
521:SO
444:)
414:SO
382:.
380:pm
276:24
272:36
701:.
670:.
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614::
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523:4
519:2
450:E
440:(
424:4
420:2
416:4
412:2
373:3
353:o
349:4
312:Y
280:6
274:H
270:C
178:)
174:(
66:)
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