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Binding SC, Green JC, Turner ZR, Buffet JC, O'Hare D. Synthesis, characterisation and redox properties of anti-bimetallic permethylpentalene complexes. Dalton Trans 2019; 48:4263-4273. [PMID: 30848268 DOI: 10.1039/c8dt05054f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We report a series of anti-bimetallic transition metal complexes based on the permethylpentanyl (Pn*, C8Me6) ligand: anti-(MCpR5)2Pn* (where M = Fe, Co and Ni and R = H or Me). Compounds (FeCp*)2Pn* (1), (CoCp*)2Pn* (2), (NiCp*)2Pn* (3), (CoCp)2Pn* (4) and (NiCp)2Pn* (5) were fully characterised by NMR spectroscopy, X-ray crystallography, DFT calculations and cyclic voltammetry. All anti-(MCpR5)Pn* structures have diamagnetic ground states. 1, 2 and 4 have isolated non-degenerate ground states with closed shell configurations. A study of the magnetic properties of the dinickel complexes 3 and 5 reveal Boltzmann population of a Curie triplet state in the solution. Cyclic voltammetry reveals multiple reversible or quasi-reversible redox couples for all the dinuclear complexes.
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Affiliation(s)
- Samantha C Binding
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.
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2
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Zhang HX, Ke WS, Zhu CY, Wang JY, Sasaki Y, Chen ZN, Lin C, Wang Z, Liao S, Wu W. Synthesis, characterization and properties of oxo-bridged diruthenium(III) complexes with thiocyanato and cyanato ligands. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.09.053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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3
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Sakamoto R, Kume S, Nishihara H. Visible-Light Photochromism of Triarylamine- or Ferrocene-Bound Diethynylethenes that Switches Electronic Communication between Redox Sites and Luminescence. Chemistry 2008; 14:6978-86. [DOI: 10.1002/chem.200800732] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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4
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Gerber S, Gröger H, Ensling J, Gütlich P, Krautscheid H. (Pr4N)4[Ag3Fe2(ECN)12]—Anionic Network Structures with Mutual Interpenetration. Angew Chem Int Ed Engl 2005; 44:7787-90. [PMID: 16270375 DOI: 10.1002/anie.200502287] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Stefan Gerber
- Institut für Anorganische Chemie, Universität Leipzig, Germany
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5
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Gerber S, Gröger H, Ensling J, Gütlich P, Krautscheid H. (Pr4N)4[Ag3Fe2(ECN)12] - Anionennetzwerke mit gegenseitiger Durchdringung. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200502287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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6
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Gibson VC, Long NJ, Long RJ, White AJP, Williams CK, Williams DJ, Grigiotti E, Zanello P. Synthesis, Characterization, and Metal Complexation of Unsymmetrical 1,1‘-Bis(organylthiolato)ferrocenes. Organometallics 2004. [DOI: 10.1021/om034287v] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vernon C. Gibson
- Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ, and Dipartimento di Chimica, Università di Siena, Via Aldo Moro, 53100 Siena, Italy
| | - Nicholas J. Long
- Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ, and Dipartimento di Chimica, Università di Siena, Via Aldo Moro, 53100 Siena, Italy
| | - Richard J. Long
- Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ, and Dipartimento di Chimica, Università di Siena, Via Aldo Moro, 53100 Siena, Italy
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ, and Dipartimento di Chimica, Università di Siena, Via Aldo Moro, 53100 Siena, Italy
| | - Charlotte K. Williams
- Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ, and Dipartimento di Chimica, Università di Siena, Via Aldo Moro, 53100 Siena, Italy
| | - David J. Williams
- Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ, and Dipartimento di Chimica, Università di Siena, Via Aldo Moro, 53100 Siena, Italy
| | - Emanuela Grigiotti
- Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ, and Dipartimento di Chimica, Università di Siena, Via Aldo Moro, 53100 Siena, Italy
| | - Piero Zanello
- Department of Chemistry, Imperial College London, South Kensington, London, U.K. SW7 2AZ, and Dipartimento di Chimica, Università di Siena, Via Aldo Moro, 53100 Siena, Italy
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7
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Hua DH, McGill JW, Lou K, Ueki A, Helfrich B, Desper J, Zanello P, Cinquantini A, Corsini M, Fontani M. Parallel and perpendicular stacking of ferrocene rings. Inorganica Chim Acta 2003. [DOI: 10.1016/s0020-1693(02)01573-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Yao H, Sabat M, Grimes RN, Zanello P, Fabrizi de Biani F. Alkynyl-Linked Poly(cobaltacarboranes). Directed Synthesis, Structures, and Electrochemistry of Linear Complexes and Benzene-Centered Pinwheels1. Organometallics 2003. [DOI: 10.1021/om0301379] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Klimova EI, Berestneva TK, Cinquantini A, Corsini M, Zanello P, Tuscano RA, Hernández-Ortega S, Martínez-García M. 3,3-Diethyl- and 3,3-dibenzyl-1,2-diferrocenylcyclopropenes. Org Biomol Chem 2003; 1:4458-64. [PMID: 14727641 DOI: 10.1039/b307408k] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reactions of 2,3-diferrocenylcyclopropenone 1 with ethyl- and benzylmagnesium chlorides afford 3,3-diethyl-and 3,3-dibenzyl- 1,2-diferrocenylcyclopropenes 2 and 3, respectively, and products of nucleophilic opening of the three-membered ring resulting from the addition of RMgCl to the carbonyl group, viz., saturated ketones(4,5-diferrocenylheptan-3-ones 4a,b and 3,4-diferrocenyl-1,5-diphenylpentan-2-ones 5a,b as ca. 3: 1 mixtures of two diastereomers) and other products. The spatial structures of compounds 2 and 4a were established by X-ray diffraction analysis of single crystals. Protonation of the cyclopropenes 2 and 3 with tetrafluoroboric acid at -40 degrees C yields the corresponding 3,3-dialkyl-1 ,2-diferrocenylcyclopropylium tetrafluoroborates. Transformation of the latter into diferrocenylallylic cations upon increasing the temperature to 20 degrees C and their eprotonation under the action of N,N-dimethylaniline were studied. Electrochemical investigation of 1 and 2 shows that in both complexes the cyclopropene spacer allows electronic communication between the two outer ferrocenyl groups, this being notably greater for 2 than for 1.
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Affiliation(s)
- Elena I Klimova
- Universidad Nacional Autónoma de México, Facultad de Química, Cd. Universitaria, Coyoacán, México DF, México
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Yip JHK, Wu J, Wong KY, Ho KP, So-Ngan Pun C, Vittal JJ. Electronic Communication Mediated by a PtI−PtIσ-Bond. Organometallics 2002. [DOI: 10.1021/om020513+] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Yip JHK, Wu J, Wong KY, Yeung KW, Vittal JJ. Syntheses, Structures, and Electrochemistry of Polynuclear CuI, AgI, and PtII Complexes Bearing Ferrocenyl Group. Organometallics 2002. [DOI: 10.1021/om010998m] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- John H. K. Yip
- Department of Chemistry, The National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, and Department of Applied Biology and Chemical Technology, Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, People's Republic of China
| | - Jianguo Wu
- Department of Chemistry, The National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, and Department of Applied Biology and Chemical Technology, Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, People's Republic of China
| | - Kwok-Yin Wong
- Department of Chemistry, The National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, and Department of Applied Biology and Chemical Technology, Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, People's Republic of China
| | - Kin-Wai Yeung
- Department of Chemistry, The National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, and Department of Applied Biology and Chemical Technology, Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, People's Republic of China
| | - Jagadese J. Vittal
- Department of Chemistry, The National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, and Department of Applied Biology and Chemical Technology, Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong, People's Republic of China
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Chen YJ, Pan DS, Chiu CF, Su JX, Lin SJ, Kwan KS. Metal-metal interactions in weakly coupled mixed-valence E- and Z-diferrocenylethylene complexes. Inorg Chem 2000; 39:953-8. [PMID: 12526374 DOI: 10.1021/ic991084j] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To study metal-to-metal interactions in mixed-valence states of two weakly coupling ferrocenyl groups assembled in E or Z conformation on an ethylenic double bond, E-1,2-dimethyldiferrocenylethylene (1), Z-1,2-dimethyldi-ferrocenylethylene (2), and 1,2-diferrocenylcyclohexene (3) were synthesized and structurally characterized. Crystals of 1 are triclinic, P1, with a = 7.494(9) A, b = 10.801(3) A, c = 11.971(2) A, alpha = 102.17(2) degrees, beta = 106.12(9) degrees, gamma = 90.42(2) degrees, V = 907.8 A3, and Z = 2. Crystals of 2 are monoclinic, P2(1)/c, with a = 13.601(8) A, b = 11.104(4) A, c = 13.732(1) A, beta = 114.26(7) degrees, V = 1890.8(3) A3, and Z = 4. Crystals of 3 are orthorhombic, P2(1)2(1)2(1), with a = 5.766(2) A, b = 13.090(1) A, c = 26.695(2) A, V = 2014.9(3) A3, and Z = 4. Intervalence transition spectra (IT) and electrochemical data have been determined and compared with those of diferrocenyl-benzene (para, ortho, and meta). The comproportionation constants in nitrobenzene at 25 degrees C were found to be 490 and 813 for 1 and 3, respectively. That of 2 was not measured because of the fact that 2+ isomerizes rapidly in all solvents tested, yielding nearly a racemic mixture of E and Z conformers. This finding helps to clear the paradoxical phenomenon between experimental results of mixed-valence complexes of E- and Z-1,2-bis(1'-ethyl-1-ferrocenyl)-1,2-dimethylethylene and theories. The stability of the mixed-valence species was discussed in terms of resonance delocalization, Coulomb repulsion energy, inductive effect, magnetic interaction, structural factors, and statistical factor. According to our analysis based on the Hush formalism, the contribution due to Coulomb repulsion energy dominates the overall stability of the mixed-valence state in 1+, 2+, and 3+. Stabilization that arises from resonance delocalization is only minor and contributes less than 4% to the overall stability, even in 3+ where linked Cp rings and the ethylenic plane are coplanar. In calculating the resonance contribution, crystallographic Fe-Fe distances of 7.44 A (1) and 6.68 A (3) were used for 1+, and 3+, respectively.
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Affiliation(s)
- Y J Chen
- Department of Chemistry, Fu Jen University, Taipei, Taiwan, Republic of China
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Inter-chromophore electronic interactions in ligand-bridged polynuclear complexes: a comparative study of various bridging ligands. Inorganica Chim Acta 1994. [DOI: 10.1016/0020-1693(94)04089-3] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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