Abstract
Structure and bonding in triple-decker cationic complexes [(η5-Cp)Fe(μ,η:η5-E5) Fe(η5-Cp)]+ (1: E = CH, 2: E = P, 3: E = As) and [(η5-Cp)Fe(μ,η:η5-Cp)Fe(η5-E5)]+ (E = P, As) are examined by density functional theory (DFT) calculations at the B3LYP/6-31+G* level. These species exhibit the lowest energy when all the three ligands are eclipsed. In the complexes with bifacially coordinated cyclo-E5, the perfectly eclipsed D5 h sandwich structure a is found to be a potential minimum. The energy difference between the fully eclipsed and the staggered conformations b and c are within 1.0, 2.1, and 6.3 kcal/mol, respectively, for E = CH, P, and As. The isomeric species with monofacially coordinated cyclo-E5 (E =P, As), [(η5 -Cp)Fe(μ,η :η5-Cp)Fe(η5-E5)]+ are predicted to be about 30 and 60 kcal/mol higher in energy , respectively, for E = P and As. The calculations predict that the bifacially coordinated cyclo-E5 (E =P, As) undergoes significant ring expansion leading to ``loosening of bonds'' as observed experimentally. The consequent loss of aromaticity in the central cyclo-E5 indicates that significant π-electron density from the ring can be directed towards bonding with the iron centers on both sides. The diffuse nature of the π-orbitals of cyclo-P5 and cyclo-As5 can lead to better overlap with the iron d-orbitals and result in stronger bonding. This is reflected in the bond order values of 0.377 and 0.372 for the Fe-P and Fe-As bonds in 2a and 3a, respectively. The natural population analysis reveals that the Fe atom that is coordinated to a cyclo-E5 (E = P, As) possesses a negative charge of −0.23 to −0.38 units due to transfer of electron density from the inorganic ring to the metal center.
Similar content being viewed by others
References
Scherer OJ (1987) Comments Inorg Chem 6:1
Scherer OJ (1990) Angew Chem Int Ed Engl 29:1104–1122
Baudler M, Glinka K (1993) Chem Rev 93:1623
Scherer OJ (1999) Acc Chem Res 32:751
Whitemire KH (1998) Adv Organomet Chem 42:1
Dillon KB, Mathey F, Nixon JF (1998) Phosphorus: the carbon copy, Wiley, Chichester
Scherer OJ, Schwalb J, Wolmershäuser G, Kaim W, Gross R (1986) Angew Chem Int Ed Engl 25:363
Scherer OJ, Schwalb J, Swarowsky H, Wolmershäuser G, Kaim W, Gross R (1988) Chem Ber 121:443–449
Scherer OJ, Sitzmann H, Wolmershäuser G (1985) Ang Chem Int Ed Engl 24:351
Scherer OJ, Brück T, Wolmershäuser G (1989) Chem Ber 122:2049–2054
Scherer OJ, Wiedemann W, Wolmershäuser G (1989) J Organomet Chem 361: C 11
Scherer OJ, Rink B, Heckmann G, Wolmershäuser G (1992) Chem Ber 125:1011
Scherer OJ, Pfeiffer K, Wolmershäuser G (1992) Chem Ber 125:2367
Scherer OJ, Schwarz G, Wolmershäuser G (1996) Z Anorg Allg Chem 622:951–957
Herberhold M, Frohmader G, Milius W (1996) J Organomet Chem 522:185–196
Kudinov AR, Loginov DA, Starikova ZA, Petrovskii PV, Corsini M, Zanello P (2002) Eur J Inorg Chem 2002:3018
Hughes AK, Murphy VJ, O'Hare D (1994) J Chem Soc Chem Comm 1994:163
Kudinov AR, Petrovskii PV, Rybinskaya MI (1999) Russ Chem Bull 48:1352,1362
Scherer OJ, Pfeiffer K, Wolmershäuser G (1992) Chem Ber 125:2367
Reddy AC, Jemmis ED, Scherer OJ, Winter R, Heckmann G, Wolmershäuser G (1992) Organomet 11:3894
Von Hänisch C, Fenske D, Weigend F, Ahlrichs R (1997) Chem Eur J 3:1494
Scherer OJ, Brück T, Wolmershäuser G (1988) Chem Ber 121:935–938
Scherer OJ, Blath C, Wolmershäuser G (1990) J Organomet Chem 387: C 21
Baudler M, Etzbach (1991) Angew Chem Int Ed Engl 30:580
Avent AG, Geoffrey F, Cloke N, Flower KR, Hitchcock PB, Nixon JF (1994) Angew Chem Int Ed Engl 33:2330
Hitchcock PB, Jones C, Nixon JF (1994) Angew Chem Int Ed Engl 33:463
Detzel M, Mohr T, Scherer OJ, Wolmershäuser G (1994) Ang Chem Int Ed Engl 33:1110–1112
Scherer OJ, Hilt T, Wolmershäuser G (1998) Organomet 17:4110
Scherer OJ, Wiegel S, Wolmershäuser G (1998) Chem Eur J 4:1910–1916
Rink B, Scherer OJ, Wolmershäuser G (1995) Chem Ber 128:71–4
Herber RH, Scherer OJ (2000) Inorg Chim Acta 308:116–120
Herber RH, Scherer OJ (2000) Eur J Inorg Chem 2000:2451–2453
Urnezius E, Brennessel WW, Cramer CJ, Ellis JE, Schleyer PvR (2002) Science 295:832
Kesanli B, Fettinger J, Scott B, Eichhorn B (2004) Inorg Chem 43:3840–3846
Jemmis ED, Reddy AC (1990) Proc Indian Acad Sci (Chem Sci) 102:379–393 and the references cited therin
Di Vaira M, Sacconi L (1982) Angew Chem Int Ed Engl 21:330
Tremel W, Hoffmann R, Kertesz M (1989) J Am Chem Soc 111:2030
Jemmis ED, Reddy AC (1988) Organometallics 7:1561
Hohenberg P, Kohn W (1964) Phy Rev B 136:864
Parr RG, Yang W (1989) Density functional theory of atoms and molecules. Oxford University, New York
Orendt AM, Facelli JC, Jiang YJ, Grant DM (1998) J Phys Chem A 102:7692
Matsuzawa N, Seto J, Dixon DA (1997) J Phys Chem A 101:9391
Mayor-López MJ, Weber J (1997) Chem Phys Lett 281:226
Maron L, Eisenstein O (2000) J Phys Chem A 104:7140
Kaupp M, Schleyer PvR, Dolg M, Stoll H (1992) J Am Chem Soc 114:8202
Xu Z-F, Xie Y, Feng W-L, Schaefer III HF (2003) J Phys Chem A 107:2716
Frison G, Mathey F, Sevin A (2002) J Phys Chem A 106:5653
Frunzke J, Lein M, Frenking G (2002) Organometallics 21:3351
Lein M, Frunzke J, Frenking G (2003) Inorg Chem 42:2504
Malar EJP (2004) Eur J Inorg Chem 2004:2723–2732
Malar EJP (2003) Inorg Chem 42:3873
Becke AD (1993) J Chem Phys 98:5648
Lee C, Yang W, Parr RG (1988) Phy Rev B 37:785
Frisch MJ, Trucks GW, Schlegel HB, Scuseria GE, Robb MA, Cheeseman JR, Montgomery JA Jr, Vreven T, Kudin KN, Burant JC, Millam JM, Iyengar SS, Tomasi J, Barone V, Mennucci B, Cossi M, Scalmani G, Rega N, Petersson GA, Nakatsuji H, Hada M, Ehara M, Toyota K, Fukuda R, Hasegawa J, Ishida M, Nakajima T, Honda Y, Kitao O, Nakai H, Klene M, Li X, Knox JE, Hratchian HP, Cross JB, Adamo C, Jaramillo J, Gomperts R, Stratmann RE, Yazyev O, Austin AJ, Cammi R, Pomelli C, Ochterski JW, Ayala PY, Morokuma K, Voth GA, Salvador P, Dannenberg JJ, Zakrzewski VG, Dapprich S, Daniels AD, Strain MC, Farkas O, Malick DK, Rabuck AD, Raghavachari K, Foresman JB, Ortiz JV, Cui Q, Baboul AG, Clifford S, Cioslowski J, Stefanov BB, Liu G, Liashenko A, Piskorz P, Komaromi I, Martin RL, Fox D J, Keith T, Al-Laham M A, Peng CY, Nanayakkara A, Challacombe M, Gill PMW, Johnson B, Chen W, Wong MW, Gonzalez C, Pople JA (2003) Gaussian 03 Revision B04, Gaussian Inc, Pittsburgh
Foresman JB, Frisch A (1996) Exploring chemistry with electronic srtucture methods; Gaussian, Inc: Pittsburgh
Bauschlicher CW, Patridge H (1995) J Chem Phys 103:1788
a) Haaland A, Nilsson JE (1968) Acta Chem Scand 22:2653; b) Haaland A (1979) Acc Chem Res 12:415
Wiberg KB (1968) Tetrahedron 24:1083
Gopinathan MS, Jug K (1983) Theor Chim Acta 63:511
Reed AE, Weinstock RB, Weinhold F (1985) J Chem Phys 83:735
Reed AE, Curtiss LA, Weinhold F (1988) Chem Rev 88:899
Jug K (1983) J Org Chem 48:1344
Jug K, Köster A (1991) J Phys Org Chem 4:163
Baudler M, Akpapoglou S, Ouzounis D, Wasgestian F, Meinigke B, Budzikiewicz H, Munster H (1988) Angew Chem Int Ed Engl 27:280
Malar EJP(1992) J Org Chem 57:3694
Hamilton TP, Schaefer HF (1989) Ang Chem Int Ed Engl 28:485
Dransfeld A, Nyulaszi L, Schleyer PvR (1998) Inorg Chem 37:4413
In the present analysis, the aromaticity index is taken as the lowest ring bond-order, in accordance with the ring-current definition of Jug [62,63]
Waterman KC, Streitwieser A, Blom R, Faegri K Jr, Midtgaard T (1991) J Am Chem Soc 113:3230
Bohn RK, Haaland A (1966) J Organomet Chem 5:470
Drouin BJ, Cassak PA, Kukolich SG (1997) Inorg Chem 36:2868
Jutzi P, Khol F, Hofmann P, Kruger C, Tsay YH (1980) Chem Ber 113:757
Alexandratos S, Streitwieser A Jr, Schaefer HF III (1976) J Am Chem Soc 98:7959
Jespersen KK, Chandrashekhar J, Schleyer PvR (1980) J Org Chem 45:1608
Waterman KC, Streitwieser A Jr (1984) J Am Chem Soc 106:3138
Takusagawa F, Koetzle TF (1979) Acta Crystallogr B 35:1074
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Padma Malar, E. Density functional theory analysis of some triple-decker sandwich complexes of iron containing cyclo-P5 and cyclo-As5 ligands. Theor Chem Acc 114, 213–221 (2005). https://doi.org/10.1007/s00214-005-0663-y
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00214-005-0663-y