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Takiguchi A, Tanaka H, Maeda H, Shinokubo H. Diverse Crystal Structures of Ion Pairs Consisting of Oxaporphyrinium Cations and Pentacyanocyclopentadienide. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Asahi Takiguchi
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Hiroki Tanaka
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
| | - Hiromitsu Maeda
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
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Otten BM, Melançon KM, Omary MA. All That Glitters Is Not Gold: A Computational Study of Covalent vs Metallophilic Bonding in Bimetallic Complexes of d10 Metal Centers—A Tribute to Al Cotton on the Tenth Anniversary of His Passing. COMMENT INORG CHEM 2018. [DOI: 10.1080/02603594.2018.1467315] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Brooke M. Otten
- Department of Chemistry, University of North Texas, Denton, Texas, USA
| | | | - Mohammad A. Omary
- Department of Chemistry, University of North Texas, Denton, Texas, USA
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Wächtler M, Guthmuller J, González L, Dietzek B. Analysis and characterization of coordination compounds by resonance Raman spectroscopy. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.02.004] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Jou JY, Chang CH, Lee GH, Wang Y, Su YO, Yeh WL, Cheng SH. Electrochemical and resonance Raman studies of nitridomanganese(V) porphyrins in nonaqueous solution. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424603000847] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The UV-vis spectral, electrochemical and resonance Raman data of [meso-tetrakis(4-pyridyl)porphyrinato]nitridomanganese(V), MnN(TPyP) , were investigated. MnN(TTP) (where ( TTP )2− = dianion of meso-tetrakis(p-tolyl)porphyrin) and MnN(OEP) (where ( OEP )2− = dianion of 2,3,7,8,12,13,17,18-octaethylporphyrin) were also examined in comparison. Cyclic voltammetry of MnN ( TPyP ) showed an irreversible oxidation wave at +1.22 V and two redox couples at −1.05 and −1.40 V vs. Ag / AgCl , respectively. According to spectroelectrochemical studies, the first and the second reductions involved formation of the porphyrin anion and dianion, respectively, the latter leading to a phlorin. The electron-withdrawing 4-pyridyl substituent shifted the redox potential of the porphyrin ring to a more positive value. However, the bond strength of the Mn - N triple bond was not affected. Resonance Raman studies indicated that the Mn≡N stretching frequencies (νMnN) occurring within 1050 ± 1 cm−1 in various solvents did not change significantly. The hydrogen-bonding between methanol and MnN ( TPyP ) lowered νMnN to 1040 cm−1. A further lowering of νMnN was found in the presence of nitrogeneous bases such as imidazole (ImH), piperidine (Pip) and pyridine (Py) and may be due to coordination to the manganese center. νMnN is correlated with the pKa's of a series of pyridines.
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Affiliation(s)
- Jeng-Yi Jou
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Chih-Hao Chang
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Gene-Hsiang Lee
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Yu Wang
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Y. Oliver Su
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
- Department of Applied Chemistry, National Chi Nan University, Puli, Nantou Hsien 545, Taiwan
| | - Wei-Lun Yeh
- Department of Applied Chemistry, National Chi Nan University, Puli, Nantou Hsien 545, Taiwan
| | - Shu-Hua Cheng
- Department of Applied Chemistry, National Chi Nan University, Puli, Nantou Hsien 545, Taiwan
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Song SN, Li DM, Wu JF, Zhuang CF, Ding H, Song WB, Cui LF, Cao GZ, Liu GF. Syntheses and Characterization of Molybdenum/Zinc Porphyrin Dimers Bridged by Aromatic Linkers. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200600853] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Mochizuki K, Kawamura T, Chang HC, Kitagawa S. Structural and Spectroscopic Characterization of a Diruthenium o-Dioxolene Complex Possessing a Singly Occupied Molecular Orbital Delocalized over the Entire Molecule, [Ru2(3,6-DTBDiox)4]-. Inorg Chem 2006; 45:3990-7. [PMID: 16676959 DOI: 10.1021/ic052180p] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Chemical oxidation of [Ru2(6+)(3,6-DTBCat)4]2- affords [n-Bu4N][Ru2(3,6-DTBDiox)4].acetone (2.acetone). The oxidized species was characterized by X-ray crystallographic analysis and EPR, and the delocalization of the unpaired electron over the entire molecule was indicated. This example showed that the utilization of redox-active ligands into a Ru2 complex expanded the degree of freedom in the electronic structure. DFT calculations support this view, and the spin population was estimated to be approximately 18% and 82% for the Ru2 core and the four dioxolene ligands, respectively.
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Affiliation(s)
- Katsunori Mochizuki
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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Novel porphyrin–thallium–platinum complex with “naked” metal–metal bond: multinuclear NMR characterization of [(tpp)Tl–Pt(CN)5]2− and [(thpp)Tl–Pt(CN)5]2− in solution. Inorganica Chim Acta 2004. [DOI: 10.1016/j.ica.2004.06.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Daphnomili D, Raptopoulou C, Terzis A, Agondanou JH, Bénazeth S, Coutsolelos AG. Spectroscopic and Structural Study of Metal−Metal Bonded Metalloporphyrinic Derivatives: the Case of Rhodium−Indium. Inorg Chem 2004; 43:4363-71. [PMID: 15236549 DOI: 10.1021/ic035155x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis and spectroscopic characterization of heterometallic porphyrinate derivatives containing rhodium-indium metal-metal bonds are reported. The investigated compounds are represented by the formula [(Porph)RhIn(Porph')], where Porph and Porph' are OEP, TPP, beta-Cl(4)TPP, beta-Cl(8)TPP, or TPyP. UV-Visible spectroscopy of the title complexes confirms the presence of a strong pi-pi interaction between the macrocycles in each derivative and denotes the effect of the nontransition metal in their optical features. For comparison purposes, a new bimetallic complex with a rhodium-thallium metal-metal bond is also presented. According to (1)H and (13)C NMR data, we were able to distinguish two major NMR regions: the endo- between the metal-metal bonded macrocycles and the exo-, which are characteristic features of porphyrinic complexes at very close proximity. X-ray absorption spectroscopy (XAS) structural characterization of Rh-In bond was performed on the [(OEP)RhIn(OEP)] complex, in the fluorescence mode, and we essentially focused on the metal-metal distance determination. Finally, the distance of 2.543(3) A was deduced from the X-ray structure of a new [(TPP)RhIn(TPyP)] derivative.
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Affiliation(s)
- D Daphnomili
- Department of Chemistry, School of Sciences, University of Crete, P O Box 1470, 71409 Heraklion Crete, Greece
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Collman JP, Boulatov R, Jameson GB. The First Quadruple Bond Between Elements of Different Groups This work was supported by the National Science Foundation (Grant CHE-9612725) and a Stanford Graduate Fellowship (R.B.). We thank Dr. F. Hollander (Berkeley), A. Cole (Stanford), and Dr. K. Hübler (Stuttgart) for acquiring or for assistance in the initial processing of the X-ray data. Angew Chem Int Ed Engl 2001; 40:1271-1274. [PMID: 11301447 DOI: 10.1002/1521-3773(20010401)40:7<1271::aid-anie1271>3.0.co;2-d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- James P. Collman
- Department of Chemistry Stanford University Stanford, CA 95405-5080 (USA)
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