1
|
Karami K, Abedanzadeh S, Farrokhpour H, Lipkowski J. Synthesis and characterization of the P,C-palladacycles with bridging and chelating dinitrogen ligands and ONIOM calculations on the pyrazine-bridged organometallic polymers (n = 1 to n = 10). J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.01.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
2
|
Tanase T, Hatada S, Noda S, Takenaka H, Nakamae K, Kure B, Nakajima T. Stepwise Expansion of Pd Chains from Binuclear Palladium(I) Complexes Supported by Tetraphosphine Ligands. Inorg Chem 2015; 54:8298-309. [PMID: 26266547 DOI: 10.1021/acs.inorgchem.5b00950] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reaction of [Pd2(XylNC)6]X2 (X = PF6, BF4) with a linear tetraphosphine, meso-bis[(diphenylphosphinomethyl)phenylphosphino]methane (dpmppm), afforded binuclear Pd(I) complexes, [Pd2(μ-dpmppm)2]X2 ([2]X2), through an asymmetric dipalladium complex, [Pd2(μ-dpmppm)(XylNC)3](2+) ([1](2+)). Complex [2](2+) readily reacted with [Pd(0)(dba)2] (2 equiv) and an excess of isocyanide, RNC (R = 2,6-xylyl (Xyl), tert-butyl ((t)Bu)), to generate an equilibrium mixture of [Pd4(μ-dpmppm)2(RNC)2](2+) ([3'](2+)) + RNC ⇄ [Pd4(μ-dpmppm)2(RNC)3](2+) ([3](2+)), from which [Pd4(μ-dpmppm)2(XylNC)3](2+) ([3a](2+)) and [Pd4(μ-dpmppm)2((t)BuNC)2](2+) ([3b'](2+)) were isolated. Variable-temperature UV-vis and (31)P{(1)H} and (1)H NMR spectroscopic studies on the equilibrium mixtures demonstrated that the tetrapalladium complexes are quite fluxional in the solution state: the symmetric Pd4 complex [3b'](2+) predominantly existed at higher temperatures (>0 °C), and the equilibrium shifted to the asymmetric Pd4 complex [3b](2+) at a low temperature (∼-30 °C). The binding constants were determined by UV-vis titration at 20 °C and revealed that XylNC is of higher affinity to the Pd4 core than (t)BuNC. In addition, both isocyanides exhibited higher affinity to the electron deficient [Pd4(μ-dpmppmF2)2(RNC)2](2+) ([3F'](2+)) than to [Pd4(μ-dpmppm)2(RNC)2](2+) ([3'](2+)) (dpmppmF2 = meso-bis[{di(3,5-difluorophenyl)phosphinomethyl}phenylphosphino]methane). When [2]X2 was treated with [Pd(0)(dba)2] (2 equiv) in the absence of RNC in acetonitrile, linearly ordered octapalladium chains, [Pd8(μ-dpmppm)4(CH3CN)2]X4 ([4]X4: X = PF6, BF4), were generated through a coupling of two {Pd4(μ-dpmppm)2}(2+) fragments. Complex [2](2+) was also proven to be a good precursor for Pd2M2 mixed-metal complexes, yielding [Pd2Cl(Cp*MCl) (Cp*MCl2)(μ-dpmppm)2](2+) (M = Rh ([5](2+)), Ir ([6](2+)), and [Au2Pd2Cl2(dpmppm-H)2](2+) ([7](2+)) by treatment with [Cp*MCl2]2 and [AuCl(PPh3)], respectively. Complex [7](2+) contains an unprecedented PC(sp(3))P pincer ligand with a PCPCPCP backbone, dpmppm-H of deprotonated dpmppm. The present results demonstrated that the binuclear Pd(I) complex [2](2+) was a quite useful starting material to extend the palladium chains and to construct Pd-involved heteromultinuclear systems.
Collapse
Affiliation(s)
- Tomoaki Tanase
- Department of Chemistry, Faculty of Science, Nara Women's University , Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Satoko Hatada
- Department of Chemistry, Faculty of Science, Nara Women's University , Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Sayo Noda
- Department of Chemistry, Faculty of Science, Nara Women's University , Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Hiroe Takenaka
- Department of Chemistry, Faculty of Science, Nara Women's University , Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Kanako Nakamae
- Department of Chemistry, Faculty of Science, Nara Women's University , Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Bunsho Kure
- Department of Chemistry, Faculty of Science, Nara Women's University , Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Takayuki Nakajima
- Department of Chemistry, Faculty of Science, Nara Women's University , Kitauoya-nishi-machi, Nara, 630-8506, Japan
| |
Collapse
|
3
|
Goto E, Begum RA, Ueno C, Hosokawa A, Yamamoto C, Nakamae K, Kure B, Nakajima T, Kajiwara T, Tanase T. Electron-Deficient Pt2M2Pt2 Hexanuclear Metal Strings (M = Pt, Pd) Supported by Triphosphine Ligands. Organometallics 2014. [DOI: 10.1021/om401211d] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eri Goto
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| | - Rowshan Ara Begum
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| | - Chiaki Ueno
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| | - Aya Hosokawa
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| | - Chie Yamamoto
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| | - Kanako Nakamae
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| | - Bunsho Kure
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| | - Takayuki Nakajima
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| | - Takashi Kajiwara
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| | - Tomoaki Tanase
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara 630-8506, Japan
| |
Collapse
|
4
|
Tanase T, Hatada S, Mochizuki A, Nakamae K, Kure B, Nakajima T. Flexible, linear, tetranuclear palladium complexes supported by tetraphosphine ligands with electron-withdrawing groups. Dalton Trans 2013; 42:15941-52. [DOI: 10.1039/c3dt51433a] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
5
|
Goto E, Begum RA, Hosokawa A, Yamamoto C, Kure B, Nakajima T, Tanase T. Hydride-Bridged Pt2M2Pt2 Hexanuclear Metal Strings (M = Pt, Pd) Derived from Reductive Coupling of Pt2M Building Blocks Supported by Triphosphine Ligands. Organometallics 2012. [DOI: 10.1021/om300680p] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Eri Goto
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Rowshan Ara Begum
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Aya Hosokawa
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Chie Yamamoto
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Bunsho Kure
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Takayuki Nakajima
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara, 630-8506, Japan
| | - Tomoaki Tanase
- Department
of Chemistry, Faculty of Science, Nara Women’s University, Kitauoya-nishi-machi, Nara, 630-8506, Japan
| |
Collapse
|
6
|
LIU CHUNGUANG, GUAN XIAOHUI, SU ZHONGMIN. DFT STUDIES ON ELECTRONIC STRUCTURES AND THIRD-ORDER NONLINEAR OPTICAL PROPERTIES OF A SERIES OF Pt–Pt BOND-CONTAINING METAL COMPLEXES. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2012. [DOI: 10.1142/s0219633612500289] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In this paper, electronic structures and third-order nonlinear optical (NLO) properties of a series of Pt–Pt bond-containing metal complexes have been calculated by using the density functional theory (DFT) combining with the sum-over-states (SOS) method. In order to check the reliability of this method, the electron correlations and basis sets have been compared. Our calculated results show that introduction of electron donor, thiophene ring and lengthing of organic conjugated ligand can enhance third-order NLO responses. The electronic structure analysis shows that the [Pt–Pt(H2P(CH2)PH2)2] fragment displays strong electron-withdrawing character in these systems. Meanwhile, the third-order NLO response of Pt–Pt bond also has been estimated by using TDDFT–SOS method. An enhancement of third-order NLO response has been observed because of the introduction of the Pt–Pt bond. This is mainly due to the intense and low-lying metal-to-ligand charge transfer (MLCT) and intraligand (IL) CT transitions.
Collapse
Affiliation(s)
- CHUN-GUANG LIU
- College of Chemical Engineering, Northeast Dianli University, Jilin City, 132012, P. R. China
| | - XIAO-HUI GUAN
- College of Chemical Engineering, Northeast Dianli University, Jilin City, 132012, P. R. China
| | - ZHONG-MIN SU
- Institute of Functional Material Chemistry, Faculty of Chemistry Northeast Normal University, Changchun 130024, P. R. China
| |
Collapse
|
7
|
Pérez-Temprano MH, Casares JA, de Lera ÁR, Álvarez R, Espinet P. Strong Metallophilic Interactions in the Palladium Arylation by Gold Aryls. Angew Chem Int Ed Engl 2012; 51:4917-20. [DOI: 10.1002/anie.201108043] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Revised: 01/09/2012] [Indexed: 11/12/2022]
|
8
|
Pérez-Temprano MH, Casares JA, de Lera ÁR, Álvarez R, Espinet P. Strong Metallophilic Interactions in the Palladium Arylation by Gold Aryls. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108043] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
9
|
Mashima K. Linearly Aligned Metal Clusters: Versatile Reactivity and Bonding Nature of Tetrametal M–Mo–Mo–M Complexes (M = Pt, Pd, Ir, and Rh) Supported by 6-Diphenylphosphino-2-pyridonato Ligand. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2010. [DOI: 10.1246/bcsj.20090281] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
10
|
Clément S, Aly SM, Bellows D, Fortin D, Strohmann C, Guyard L, Abd-El-Aziz AS, Knorr M, Harvey PD. Properties of the [M(dppm)2M′]2+ Building Blocks (M, M′ = Pd or Pt): Site Selectivity, Emission Features, and Frontier Orbital Analysis. Inorg Chem 2009; 48:4118-33. [DOI: 10.1021/ic8023315] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sébastien Clément
- Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, 16 route de Gray, 25030 Besançon, France, Département de Chimie, Université de Sherbrooke, Sherbrooke, PQ, Canada, J1K 2R1, Technische Universität Dortmund, Anorganische Chemie Otto-Hahn-Str. 6, D-44227 Dortmund, Germany, and Department of Chemistry, University of British Columbia Okanagan, Kelowa, BC, Canada
| | - Shawkat M. Aly
- Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, 16 route de Gray, 25030 Besançon, France, Département de Chimie, Université de Sherbrooke, Sherbrooke, PQ, Canada, J1K 2R1, Technische Universität Dortmund, Anorganische Chemie Otto-Hahn-Str. 6, D-44227 Dortmund, Germany, and Department of Chemistry, University of British Columbia Okanagan, Kelowa, BC, Canada
| | - Diana Bellows
- Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, 16 route de Gray, 25030 Besançon, France, Département de Chimie, Université de Sherbrooke, Sherbrooke, PQ, Canada, J1K 2R1, Technische Universität Dortmund, Anorganische Chemie Otto-Hahn-Str. 6, D-44227 Dortmund, Germany, and Department of Chemistry, University of British Columbia Okanagan, Kelowa, BC, Canada
| | - Daniel Fortin
- Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, 16 route de Gray, 25030 Besançon, France, Département de Chimie, Université de Sherbrooke, Sherbrooke, PQ, Canada, J1K 2R1, Technische Universität Dortmund, Anorganische Chemie Otto-Hahn-Str. 6, D-44227 Dortmund, Germany, and Department of Chemistry, University of British Columbia Okanagan, Kelowa, BC, Canada
| | - Carsten Strohmann
- Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, 16 route de Gray, 25030 Besançon, France, Département de Chimie, Université de Sherbrooke, Sherbrooke, PQ, Canada, J1K 2R1, Technische Universität Dortmund, Anorganische Chemie Otto-Hahn-Str. 6, D-44227 Dortmund, Germany, and Department of Chemistry, University of British Columbia Okanagan, Kelowa, BC, Canada
| | - Laurent Guyard
- Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, 16 route de Gray, 25030 Besançon, France, Département de Chimie, Université de Sherbrooke, Sherbrooke, PQ, Canada, J1K 2R1, Technische Universität Dortmund, Anorganische Chemie Otto-Hahn-Str. 6, D-44227 Dortmund, Germany, and Department of Chemistry, University of British Columbia Okanagan, Kelowa, BC, Canada
| | - Alaa S. Abd-El-Aziz
- Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, 16 route de Gray, 25030 Besançon, France, Département de Chimie, Université de Sherbrooke, Sherbrooke, PQ, Canada, J1K 2R1, Technische Universität Dortmund, Anorganische Chemie Otto-Hahn-Str. 6, D-44227 Dortmund, Germany, and Department of Chemistry, University of British Columbia Okanagan, Kelowa, BC, Canada
| | - Michael Knorr
- Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, 16 route de Gray, 25030 Besançon, France, Département de Chimie, Université de Sherbrooke, Sherbrooke, PQ, Canada, J1K 2R1, Technische Universität Dortmund, Anorganische Chemie Otto-Hahn-Str. 6, D-44227 Dortmund, Germany, and Department of Chemistry, University of British Columbia Okanagan, Kelowa, BC, Canada
| | - Pierre D. Harvey
- Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, 16 route de Gray, 25030 Besançon, France, Département de Chimie, Université de Sherbrooke, Sherbrooke, PQ, Canada, J1K 2R1, Technische Universität Dortmund, Anorganische Chemie Otto-Hahn-Str. 6, D-44227 Dortmund, Germany, and Department of Chemistry, University of British Columbia Okanagan, Kelowa, BC, Canada
| |
Collapse
|
11
|
Clément S, Mohammed Aly S, Fortin D, Guyard L, Knorr M, Abd-El-Aziz AS, Harvey PD. Probing the Electronic Communication of the Isocyanide Bridge Through the Luminescence Properties of the d9−d9 [ClPt(μ-dppm)2Pt(C≡N—PCP)]+ and A-Frame [ClPd(μ-dppm)2(μ-C═N—PCP)PdCl] Complexes. Inorg Chem 2008; 47:10816-24. [DOI: 10.1021/ic800811j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sébastien Clément
- Département de chimie, Université de Sherbrooke, 2550 Boul. Université, Sherbrooke, PQ, Canada, J1K 2R1, the Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, Faculté des Sciences et des Techniques, La Bouloie - 16 Route de Gray, F-25030 Besançon, France, Department of Chemistry, and the University of British Columbia Okanagan, 3333 University Way, Kelowna, BC, Canada, V1V 1V7
| | - Shawkat Mohammed Aly
- Département de chimie, Université de Sherbrooke, 2550 Boul. Université, Sherbrooke, PQ, Canada, J1K 2R1, the Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, Faculté des Sciences et des Techniques, La Bouloie - 16 Route de Gray, F-25030 Besançon, France, Department of Chemistry, and the University of British Columbia Okanagan, 3333 University Way, Kelowna, BC, Canada, V1V 1V7
| | - Daniel Fortin
- Département de chimie, Université de Sherbrooke, 2550 Boul. Université, Sherbrooke, PQ, Canada, J1K 2R1, the Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, Faculté des Sciences et des Techniques, La Bouloie - 16 Route de Gray, F-25030 Besançon, France, Department of Chemistry, and the University of British Columbia Okanagan, 3333 University Way, Kelowna, BC, Canada, V1V 1V7
| | - Laurent Guyard
- Département de chimie, Université de Sherbrooke, 2550 Boul. Université, Sherbrooke, PQ, Canada, J1K 2R1, the Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, Faculté des Sciences et des Techniques, La Bouloie - 16 Route de Gray, F-25030 Besançon, France, Department of Chemistry, and the University of British Columbia Okanagan, 3333 University Way, Kelowna, BC, Canada, V1V 1V7
| | - Michael Knorr
- Département de chimie, Université de Sherbrooke, 2550 Boul. Université, Sherbrooke, PQ, Canada, J1K 2R1, the Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, Faculté des Sciences et des Techniques, La Bouloie - 16 Route de Gray, F-25030 Besançon, France, Department of Chemistry, and the University of British Columbia Okanagan, 3333 University Way, Kelowna, BC, Canada, V1V 1V7
| | - Alaa S. Abd-El-Aziz
- Département de chimie, Université de Sherbrooke, 2550 Boul. Université, Sherbrooke, PQ, Canada, J1K 2R1, the Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, Faculté des Sciences et des Techniques, La Bouloie - 16 Route de Gray, F-25030 Besançon, France, Department of Chemistry, and the University of British Columbia Okanagan, 3333 University Way, Kelowna, BC, Canada, V1V 1V7
| | - Pierre D. Harvey
- Département de chimie, Université de Sherbrooke, 2550 Boul. Université, Sherbrooke, PQ, Canada, J1K 2R1, the Institut UTINAM UMR CNRS 6213, Université de Franche-Comté, Faculté des Sciences et des Techniques, La Bouloie - 16 Route de Gray, F-25030 Besançon, France, Department of Chemistry, and the University of British Columbia Okanagan, 3333 University Way, Kelowna, BC, Canada, V1V 1V7
| |
Collapse
|
12
|
Ohashi M, Shima A, Rüffer T, Mizomoto H, Kaneda Y, Mashima K. Linear Metal−Metal-Bonded Tetranuclear M−Mo−Mo−M Complexes (M = Ir and Rh): Oxidative Metal−Metal Bond Formation in a Tetrametallic System and 1,4-Addition Reaction of Alkyl Halides. Inorg Chem 2007; 46:6702-14. [PMID: 17608413 DOI: 10.1021/ic062474q] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reaction of Mo2(pyphos)4 (1) with [MCl(CO)2]2 (M = Ir and Rh) afforded linear tetranuclear complexes of a formula Mo2M2(CO)2(Cl)2(pyphos)4 (2, M = Ir; 3, M = Rh). X-ray diffraction studies confirmed that two "MCl(CO)" fragments are introduced into both axial sites of the Mo2 core in 1 and coordinated by two PPh2 groups in a trans fashion, thereby forming a square-planar geometry around each M(I) metal. Treatment of 2 and 3 with an excess amount of tBuNC and XylNC induced dissociation of the carbonyl and chloride ligands to yield the corresponding dicationic complexes [Mo2M2(pyphos)4(tBuNC)4](Cl)2 (5a, M = Ir; 6a, M = Rh) and [Mo2M2(pyphos)4(XylNC)4](Cl)2 (7, M = Ir; 8, M = Rh). Their molecular structures were characterized by spectroscopic data as well as X-ray diffraction studies of BPh4 derivatives [Mo2M2(pyphos)4(tBuNC)4](BPh4)2 (5b, M = Ir; 6c, M = Rh), which confirmed that there is no direct sigma-bonding interaction between the M(I) atom and the Mo2 core. The M(I) atom in 5 and 6 can be oxidized by either 2 equiv of [Cp2Fe][PF6] or an equimolar amount of I2 to afford Mo(II)2M(II)2 complexes, [Mo2M2(X)2(tBuNC)4(pyphos)4]2+ in which two Mo-M(II) single bonds are formed and the bond order of the Mo-Mo moiety has been decreased to three. The Ir(I) complex 5a reacted not only with methyl iodide but also with dichloromethane to afford the 1,4-oxidative addition products [Mo2Ir2(CH3)(I)(tBuNC)4(pyphos)4](Cl)2 (13) and [Mo2Ir2(CH2Cl)(Cl)(tBuNC)4(pyphos)4](Cl)2 (15), respectively, although the corresponding reactions using the Rh(I) analogue 6 did not proceed. Kinetic analysis of the reaction with CH3I suggested that the 1,4-oxidative addition to the Ir(I) complex occurs in an SN2 reaction mechanism.
Collapse
Affiliation(s)
- Masato Ohashi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, Japan
| | | | | | | | | | | |
Collapse
|
13
|
Mashima K, Shimoyama Y, Kusumi Y, Fukumoto A, Yamagata T, Ohashi M. Formation of a Dative Bond Between Pt0 and MoII in Linear Pt0–MoII–MoII–Pt0 Complexes, MoII2Pt02(pyphos)4(PR3)2, and Unique 1,4-Oxidative Addition Reaction of Diaryl Disulfides Giving MoII2PtI2(pyphos)4(SAr)2 (pyphos = 6-Diphenylphosphanyl-2-pyridonato). Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200601018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
14
|
Leoni P, Marchetti L, Mohapatra SK, Ruggeri G, Ricci L. Covalent Rigid-Rod Organometallic Polymers with Alternating Transition Metal Clusters and Conjugated Spacers in the Main Chain. Organometallics 2006. [DOI: 10.1021/om0604021] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Piero Leoni
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, and Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Pisa Research Unit, Via Risorgimento 35, I-56126 Pisa, Italy
| | - Lorella Marchetti
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, and Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Pisa Research Unit, Via Risorgimento 35, I-56126 Pisa, Italy
| | - Swagat Kumar Mohapatra
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, and Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Pisa Research Unit, Via Risorgimento 35, I-56126 Pisa, Italy
| | - Giacomo Ruggeri
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, and Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Pisa Research Unit, Via Risorgimento 35, I-56126 Pisa, Italy
| | - Lucia Ricci
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, and Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Pisa Research Unit, Via Risorgimento 35, I-56126 Pisa, Italy
| |
Collapse
|
15
|
Ohashi M, Yi J, Shimizu D, Yamagata T, Ohshima T, Mashima K. Hexapalladium cluster: Unique cluster construction reaction of cyclic Pd3(CNC6H3Me2-2,6)6 and linear [Pd3(CNC6H3Me2-2,6)8]2+. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.01.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
16
|
Samar D, Fortin JF, Fortin D, Decken A, Harvey PD. The Beauty and Complexity of the Mixed-Ligand Pd(II)-containing Monomers, Oligomers and Polymers Built upon Diphosphines and 1,8-Diisocyano-p-menthane. J Inorg Organomet Polym Mater 2006. [DOI: 10.1007/s10904-006-9014-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
17
|
Sevryugina Y, Olenev AV, Petrukhina MA. “Dimers of Dimers” of Ruthenium(I): Ru···BRu vs. Ru···BO Axial Interactions. J CLUST SCI 2005. [DOI: 10.1007/s10876-005-4545-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
18
|
Kurosawa H. From mononuclear to multinuclear complexes of palladium containing unsaturated hydrocarbon ligands. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.08.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
19
|
Fournier �, Decken A, Harvey P. Small Metal-Containing Oligomers Using M2(dmpm)x and M2(dmb)y Luminescent Building Blocks (M = Cu, Ag;x = 2, 3;y = 1, 2). Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200400543] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
20
|
Sicard S, Bérubé JF, Samar D, Messaoudi A, Fortin D, Lebrun F, Fortin JF, Decken A, Harvey PD. Mixed-Ligand Organometallic Polymers Containing the “Pd2(dmb)22+” Fragment: Properties of the {Pd2(dmb)2(diphos)2+}n Polymers/Oligomers in Solution and in the Solid State. Inorg Chem 2004; 43:5321-34. [PMID: 15310210 DOI: 10.1021/ic049923b] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The 1:1 reaction between the d(9)-d(9) Pd(2)(dmb)(2)Cl(2) complex (dmb = 1,8-diisocyano-p-menthane) and the diphosphine ligands (diphos) bis(diphenylphosphino)butane (5, dppb), bis(diphenylphosphino)pentane (6, dpppen), bis(diphenylphosphino)hexane (7, dpph), and bis(diphenylphosphino)acetylene (8, dpa) in the presence of LiClO(4) leads to the [[Pd(2)(dmb)(2)(diphos)](ClO(4))(2)](n) polymers. These new materials are characterized by NMR ((1)H, (13)C, (31)P), IR, Raman, and UV-vis spectroscopies (466 < lambda(max)(dsigma-dsigma*) < 480 nm), by ATG, XRD, and DSC methods, and by the capacity to make stand-alone films. From the measurements of the intrinsic viscosity in acetonitrile, the M(n) ranges from 16000 to 18400 (12 to 16 units). The dinuclear model complex [Pd(2)(dmb)(2)(PPh(3))(2)](ClO(4))(2) (4) is prepared and investigated as well. The molecular dynamic of the title polymers in acetonitrile solution is investigated by means of (13)C spin-lattice relaxation time (T(1)) and nuclear Overhauser enhancement methods (NOE). The number of units determined by T(1)/NOE methods is 3 to 4 times less than that found from the measurements of intrinsic viscosity, and is due to flexibility in the polymer backbone, even for bridging ligands containing only one (dmb) or two C-C single bonds (dpa). During the course of this study, the starting material Pd(2)(dmb)(2)Cl(2) was reinvestigated after evidence for oligomers in the MALDI-TOF spectrum was noticed. In solution, this d(9)-d(9) species is a binuclear complex (T(1)/NOE). This result suggests that the structure of the title polymers in solution and in the solid state may not be the same either. Finally, these polymers are strongly luminescent in PrCN glasses at 77 K, and the photophysical data (emission lifetimes, 1.50 < tau(e) < 2.75 ns; quantum yields, 0.026 < Phi(e) < 0.17) are presented. X-ray data for [Pd(2)(dppe)(2)(dmb)(2)](PF(6))(4): monoclinic, space group C2/c, a = 24.3735 A, b = 21.8576(13) A, c = 18.0034(9) A, b = 119.775(1) degrees, V = 8325.0(8) A(3), Z = 4.
Collapse
Affiliation(s)
- Stéphanie Sicard
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Quebec, Canada J1K 2R1
| | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Fournier E, Lebrun F, Drouin M, Decken A, Harvey PD. Preparation and Solid-State Characterization of Mixed-Ligand Coordination/Organometallic Oligomers and Polymers of Copper(I) and Silver(I) Using Diphosphine and Mono- and Diisocyanide Ligands. Inorg Chem 2004; 43:3127-35. [PMID: 15132618 DOI: 10.1021/ic034806m] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The dimers [Cu(2)(dppm)(2)(CN-t-Bu)(3)](BF(4))(2) and [Ag(2)(dppm)(2)(CN-t-Bu)(2)](X)(2) (X(-) = BF(4)(-), ClO(4)(-)) and the coordination polymers [[M(diphos)(CN-t-Bu)(2)]BF(4)](n) (M = Cu, Ag; diphos = bis(diphenylphosphino)butane (dppb), bis(diphenylphosphino)pentane (dpppen), bis(diphenylphosphino)hexane (dpph)), [[Ag(2)(dppb)(3)(CN-t-Bu)(2)](BF(4))(2)](n), and [[Ag(dpppen)(CN-t-Bu)]BF(4)](n) have been synthesized and fully characterized as model materials for the mixed bridging ligand polymers which exhibit the general formula [[M(diphos)(dmb)]BF(4)](n) (M = Cu, Ag; dmb = 1,8-diisocyano-p-menthane) and [[Ag(dppm)(dmb)]ClO(4)](n). The identity of four polymers ([[Ag(dppb)(CN-t-Bu)(x)]BF(4)](n) (x = 1, 2), [[Ag(2)(dppb)(3)(CN-t-Bu)(2)](BF(4))(2)](n), [[Ag(dppm)(dmb)]ClO(4)](n)) and the two dimers has been confirmed by X-ray crystallography. The structure of [[Ag(dppm)(dmb)]ClO(4)](n) exhibits an unprecedented 1-D chain of the type "[Ag(dmb)(2)Ag(dppm)(2)(2+)](n)", where d(Ag(.)Ag) values between tetrahedral Ag atoms are 4.028(1) and 9.609(1) A for the dppm and dmb bridged units, respectively. The [[Ag(dppb)(CN-t-Bu)(x)]BF(4)](n) polymers (x = 1, 2) form zigzag chains in which the Ag atoms are tri- and tetracoordinated, respectively. The [[Ag(2)(dppb)(3)(CN-t-Bu)(2)](BF(4))(2)](n) polymer, which is produced from the rearrangement of [[Ag(dppb)(CN-t-Bu)(2)]BF(4)](n), forms a 2-D structure described as a "honeycomb" pattern, where large [Ag(dppb)(+)](6) macrocycles each hosting two counterions and two acetonitrile guest molecules are observed. Properties such as glass transition temperature, morphology, thermal decomposition, and luminescence in the solid state at 293 K are reported. The luminescence bands exhibit maxima between 475 and 500 nm with emission lifetimes ranging between 6 and 55 micros. These emissions are assigned to a metal-to-ligand charge transfer (MLCT) of the type M(I) --> pi(NC)/pi(PPh(2)).
Collapse
Affiliation(s)
- Eric Fournier
- Département de chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1
| | | | | | | | | |
Collapse
|
22
|
Fournier E, Sicard S, Decken A, Harvey PD. Organometallic Oligomers Based on 1,8-Diisocyano-p-menthane (dmb): Syntheses and Characterization of the {[M(diphos)(dmb)]BF4}n and {[Pd2(diphos)2(dmb)](ClO4)2}n Materials (M = Cu, Ag; diphos = dppe, dppp). Inorg Chem 2004; 43:1491-501. [PMID: 14966987 DOI: 10.1021/ic034780z] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new strategy to synthesize organometallic oligomers is presented and consists of using the title diisocyanide and chelated metal fragments with bis(diphenylphosphine)alkanes. The title materials are synthesized by reacting the [M(dppe)(BF4)] and [M2(dppp)2](BF4)2 complexes (M = Cu, Ag; dppe = bis(diphenylphosphino)ethane, dppp = bis(diphenylphosphino)propane) with dmb and the Pd2-bonded d9-d9 Pd2(dmb)2Cl2 dimer with dppe or dppp. The model compounds [M(diphos)(CN-t-Bu)2]BF4 (M = Cu, Ag) and [Pd2(diphos)2(CN-t-Bu)2](ClO4)2 (diphos = dppe, dppp) have been prepared and characterized as well for comparison purposes. Three of the model compounds were also characterized by X-ray crystallography to establish the diphosphine chelating behavior. The materials are amorphous and have been characterized from the measurements of the intrinsic viscosity, DSC, TGA, and XRD, as well as their capacity for making stand-alone films. The intrinsic viscosity data indicate that the Cu and Pd2 materials are oligomeric in solution (approximately 8-9 units), while the Ag materials are smaller. For [[Cu(dppe)(dmb)]BF4]n, a glass transition is reproducibly observed at about 82 degrees C (DeltaCp = 0.43 J/(g deg)), which suggests that these materials are polymeric in the solid state. The Cu and Ag species are luminescent in the solid state at room temperature exhibiting lambda(max) and tau(e) (emission lifetime) around 480-550 nm and 18-48 micros, respectively, while the Pd2 species are not luminescent under these conditions. During the course of this study, the unsaturated [M2(dppp)2](BF4)2 starting materials (M = Cu, Ag) were prepared, one of which (M = Ag) was characterized by crystallography. The bridging behavior of the dppp ligand in this case contrasts with the chelating behavior seen for the saturated [Cu(dppp)(CN-t-Bu)2]BF4 complex.
Collapse
Affiliation(s)
- Eric Fournier
- Département de chimie, Université de Sherbrooke, Sherbrooke, PQ, Canada J1K 2R1
| | | | | | | |
Collapse
|
23
|
Murahashi T, Ogoshi S, Kurosawa H. New direction in organopalladium chemistry: structure and reactivity of unsaturated hydrocarbon ligands bound to multipalladium units. CHEM REC 2003; 3:101-11. [PMID: 12731080 DOI: 10.1002/tcr.10052] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Examination of the manner of interaction between Pd(0) and allylpalladium(II) complexes, both being involved as key intermediates in Pd-catalyzed allylic coupling, led us to discover a new role for such combinations in affecting the stereochemistry of the transformations. A similar investigation of the system involving Pd(0) and allenyl/propargyl complexes of Pd(II) led to the discovery of dinuclear Pd(I)bond;Pd(I) complexes containing bridging allenyl/propargyl ligands, which exhibited novel structural and reactivity aspects of great synthetic significance. A systematic comparison was made between the structure, stability, and reactivity of allyl and allenyl/propargyl ligands in dinuclear complexes and those in mononuclear counterparts. On the basis of MO calculations, coordination behavior specific to the ligands of the dinuclear complex is attributed to the occurrence of the back-donating interaction from filled Pdbond;Pd bonding orbitals to vacant ligand pi* orbitals. Similar bonding features are the origin of the ready synthesis of novel one-dimensional sandwich complexes composed of conjugated polyene ligands and linear polypalladium chains. A substitutionally labile dipalladium complex reacts with an equimolar amount of trienes or alkynes to give formal [4pi + 2sigma] or [2pi + 2sigma] adducts, respectively, which undergo further unique transformations with additional unsaturated substrates.
Collapse
Affiliation(s)
- Tetsuro Murahashi
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Japan
| | | | | |
Collapse
|
24
|
|
25
|
Tanase T. Recent Development of Linearly Ordered Multinuclear Transition-Metal Complexes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2002. [DOI: 10.1246/bcsj.75.1407] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
26
|
Turcotte M, Harvey PD. Characterization of the [Ag(dmb)(2)(+)](n) oligomers (dmb = 1,8-diisocyano-p-menthane) in solution. Inorg Chem 2002; 41:2971-4. [PMID: 12033907 DOI: 10.1021/ic025522p] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The crystallographically characterized polymers [[Ag(dmb)(2)]Y](n) (Y = BF(4)(-), NO(3)(-), ClO(4)(-)) extensively dissociate in solution, contrarily to the Cu analogue, and common molecular weight determination techniques such as light scattering, osmometric, and intrinsic viscosity measurements fail to provide data allowing full characterization. Using pulsed NMR experiments, notably (13)C NMR T(1) (spin lattice relaxation time) and NOE (nuclear Overhauser enhancement) measurements on various ionic [[Ag(dmb)(2)]Y](n) materials (Y = BF(4)(-), NO(3)(-), ClO(4)(-)) and their related mononuclear [Ag (CN-t-Bu)(4)]Y salts in acetonitrile-d(3) (as comparative standards), the dipole-dipole spin lattice relaxation times (T(1)(DD)) of a selected quaternary (13)C probe are measured. These data allow us to extract the correlation times (tau(c)), which in turn permit us to estimate the volume of the tumbling species in solution. The comparison of the data between the [Ag(dmb)(2)(+)](n) and Ag(CN-t-Bu)(4)(+) species indicates the oligomeric nature of the former species, where the average number of Ag(dmb)(2)(+) approximately 8 (M(n) approximately 4000-5000).
Collapse
Affiliation(s)
- Martin Turcotte
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Quebec, Canada J1K 2R1
| | | |
Collapse
|
27
|
Fortin D, Drouin M, Harvey PD. Preparation and characterization of [[M(dmb)2]TCNQ.xTCNQo]n polymers (M=Cu,Ag; dmb = 1,8-diisocyano-p-menthane; x = 0, 0.5, 1.0, 1.5; TCNQ = 7,7,8,8-tetracyano-p-quinodimethane) and design of new semi- and photoconducting organometallic materials. Inorg Chem 2000; 39:2758-69. [PMID: 11232810 DOI: 10.1021/ic990975o] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
New thermoplastic organometallic materials of the type [[M(dmb)2]TCNQ.xTCNQo.y solvent], (M = Cu(I), Ag(I); dmb = 1,8-diisocyano-p-menthane; TCNQ = 7,7,8,8-tetracyano-p-quinodimethane, x = 0, 0.5, 1.0, 1.5; solvent = none, THF or toluene) have been prepared and characterized from X-ray powder diffraction patterns, X-ray crystallography (for some Ag polymers), DSC, and conductivity measurements. While the [[M(dmb)2]TCNQ.xTCNQo]n polymers (M = Cu,Ag; x = 0, 0.5) are insulating, the others (x = 1.0 and 1.5) are semiconducting, and the relative conductivity is found to be a function of the molecular weight and crystallinity. The [[Cu(dmb)2]TCNQ.1.5TCNQ]n material is also photoconducting, while the Ag analogue is not. Photochemical and luminescence quenching experiments in the solid-state established that the Cu+ center and TCNQo act as electron donor and acceptor, respectively, in this photoprocess. Finally photocells of the type glass/SnO2/[Cu(dmb)2]TCNQ.TCNQo]n + 0.5 acceptor/Al (acceptor = TCNQo, C60 and TCNN (13,13,14,14-tetracyano-5,12-naphthacenequinodimethane)) have been designed and characterized. The quantum yields (number of photoproduced electrons/number of photons) are as follows: TCNQ, 1.6 x 10(-4), C60, 5 x 10(-5), TCNN, 3.0 x 10(-4) at lambdaexc = 330 nm. X-ray data for [[Ag(dmb)2]TCNQ.2THF]n: space group P2(1/c), monoclinic, a = 13.5501(10), b = 9.9045(10), c = 32.564(2) A, beta = 91.130(10) degrees, Z = 4. X-ray data for [[Ag(dmb)2]TCNQ.0.5TCNQo.0.5 toluene]n: space group P2(1/c), monoclinic, a = 14.3669(19), b = 9.1659(3), c = 34.012(3) A, beta = 92.140(8) degrees, Z = 4. X-ray data for [[Ag(dmb)2]TCNQ.1.5TCNQo]n: space group C2/c, monoclinic, a = 25.830(11), b = 9.680(2), c = 42.183(19) A, beta = 104.87(4) degrees, Z = 8. X-ray data for [[Ag(dmb)2]DCTC]n: space group P2(1/a), monoclinic, a = 26.273(3), b = 9.730(3), c = 31.526(3) A, beta = 112.12(2)degrees, Z = 4.
Collapse
Affiliation(s)
- D Fortin
- Département de Chimie, Université de Sherbrooke, Québec, Canada
| | | | | |
Collapse
|
28
|
Affiliation(s)
- A Dedieu
- Laboratoire de Chimie Quantique, UMR 7551 CNRS/ULP, Université Louis Pasteur, 4 rue Blaise Pascal, 67000 Strasbourg, France
| |
Collapse
|
29
|
Zhang T, Drouin M, Harvey PD. Preparation, Spectroscopic Characterization, and Frontier MO Study of the Heteronuclear Luminescent [Pt(2)Au(2)(dmb)(2)(PPh(3))(4)](PF(6))(2) Cluster (dmb = 1,8-Diisocyano-p-menthane). A Cluster with a Formal Au(0)-Au(0) Bond Encapsulated inside a "Pt(2)(dmb)(2)(2+) " Fragment. Inorg Chem 1999; 38:4928-4936. [PMID: 11671233 DOI: 10.1021/ic981187m] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The title compound is prepared from the direct reaction of Pt(2)(dba)(3) (dba = dibenzylideneacetone) and [Au(PPh(3))(2)](PF(6)) in the presence of 1,8-diisocyano-p-methane (dmb), with Pt(2)(dmb)(2)Cl(2), [Pt(4)(dmb)(4)(PPh(3))(2)](PF(6))(2), and (PPh(3))AuCl being formed as parallel products. X-ray crystallography reveals the presence of a quasi-linear PPh(3)Au-AuPPh(3) fragment encapsulated inside a "Pt(2)(dmb)(2)(2+)" ring which is axially coordinated with two PPh(3) ligands. The d(AuAu) is 2.5977(6) Å and is indicative of a strong Au-Au single bond. The IR nu(CN) data reveal that the Pt oxidation state is I, which places the Au oxidation state at 0. The PtAu distances are 2.8422(5) and 2.8082(5) Å. The Raman-active nu(Au(2)), nu(PtAu) (b(2g) + a(g)), nu(PtP), nu(AuP), and nu(PtC) are found at 121.2, approximately 100, 85.5, 162.1, 183.1, and 457.2, and 440.9 cm(-)(1), respectively. The PtAu (0.67 mdyn Å(-)(1)) and Au(2) (1.21 mdyn Å(-)(1)) force constants (F) confirm the presence of medium PtAu and strong Au(2) bonding interactions. The absorption spectra are characterized by strong bands at lambda(max) (epsilon, M(-1) cm(-1)) at 316 (32 300), 366 (37 800), and 418 nm (21 500) and lower intensity features at 516 (2860) and 655 nm (834). The cluster is luminescent at low temperatures (solid and frozen glasses), and in the solid state at room temperature, and exhibits an emission band at approximately 875 nm, and an emission lifetime, tau(e), of 4.4 +/- 0.4 ns (solvent = butyronitrile, T = 77 K).
Collapse
Affiliation(s)
- Tianle Zhang
- Département de chimie, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1
| | | | | |
Collapse
|
30
|
Murahashi T, Mochizuki E, Kai Y, Kurosawa H. Organometallic Sandwich Chains Made of Conjugated Polyenes and Metal−Metal Chains. J Am Chem Soc 1999. [DOI: 10.1021/ja992387f] [Citation(s) in RCA: 96] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tetsuro Murahashi
- Department of Applied Chemistry, Faculty of Engineering Osaka University, Suita, Osaka, 565-0871, Japan
| | - Eiko Mochizuki
- Department of Applied Chemistry, Faculty of Engineering Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yasushi Kai
- Department of Applied Chemistry, Faculty of Engineering Osaka University, Suita, Osaka, 565-0871, Japan
| | - Hideo Kurosawa
- Department of Applied Chemistry, Faculty of Engineering Osaka University, Suita, Osaka, 565-0871, Japan
| |
Collapse
|