1
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Tanase T, Fujisawa Y, Morita Y, Ura Y, Nakajima T. Tetranuclear Pd4, PtnPd4‐n (n = 1‐3), and Pt4 Chains Supported by rac‐ and meso‐Ph2PCH2P(Ph)N(Ar)P(Ph)CH2PPh2 Tuned by Changing N‐Substituents, P‐Configuration, and Terminal Ligands. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tomoaki Tanase
- Nara Women's University Faculty of Science Kitauoya-nishi-machi 630-8506 Nara JAPAN
| | - Yoshimi Fujisawa
- Nara Joshi Daigaku Rigakubu Kagaku Seimei Kankyo Gakka Department of Chemistry JAPAN
| | - Yuka Morita
- Nara Joshi Daigaku Rigakubu Kagaku Seimei Kankyo Gakka Department of Chemistry JAPAN
| | - Yasuyuki Ura
- Nara Joshi Daigaku Rigakubu Kagaku Seimei Kankyo Gakka Department of Chemistry JAPAN
| | - Takayuki Nakajima
- Nara Joshi Daigaku Rigakubu Kagaku Seimei Kankyo Gakka Department of Chemistry JAPAN
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2
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Tanase T, Nakamae K, Miyano H, Ura Y, Kitagawa Y, Yada S, Yoshimura T, Nakajima T. Fine Tunable, Redox Active Octapalladium Chains Supported by Linear Tetraphosphines, Leading to Dynamically 1D Self-Assembled Coordination Polymers. Chemistry 2021; 27:12078-12103. [PMID: 34155699 DOI: 10.1002/chem.202101715] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Indexed: 12/16/2022]
Abstract
A series of the octapalladium chains supported by meso-Ph2 PCH2 P(Ph)CH2 P(Ph)CH2 PPh2 (meso-dpmppm) ligands, [Pd8 (meso-dpmppm)4 (L)2 ](BF4 )4 (L=none (1), solvents: CH3 CN (2 a), dmf (2 b), dmso (2 c), RN≡C: R=Xyl (3 a), Mes (3 b), Dip (3 c), t Bu (3 d), Cy (3 e), CH3 (CH2 )7 (3 f), CH3 (CH2 )11 (3 g), CH3 (CH2 )17 (3 h)) and [Pd8 (meso-dpmppm)4 (X)2 ](BF4 )2 (X=Cl (4 a), N3 (4 b), CN (4 c), SCN (4 d)), were synthesized by using 2 a as a stable good precursor, and characterized by spectroscopic (IR, 1 H and 31 P NMR, UV-vis-NIR, ESI-MS) measurements and X-ray crystallographic analyses (for 1, 2 a, b, 3 a, b, e, f, 4 a-d). On the basis of DFT calculations on the X-ray determined structure of 2 b ([2b-Pd8 ]4+ ) and the optimized models [Pd8 (meso-Ph2 PCH2 P(H)CH2 P(H)CH2 PH2 )4 (CH3 CN)2 ]4+ ([Pd8 Ph8 ]4+ ) and [Pd8 (meso-H2 PCH2 P(H)CH2 P(H)CH2 PH2 )4 (CH3 CN)2 ]4+ ([Pd8 H8 ]4+ ), with and without empirically calculating dispersion force stabilization energy (B3LYP-D3, B3LYP), the formation energy between the two Pd4 fragments is assumed to involve mainly noncovalent interactions (ca. -70 kcal/mol) with four sets of interligand C-H/π interactions and Pd⋅⋅⋅Pd metallophilic one, while electron shared covalent interactions are almost canceled out within the Pd8 chain. All the compounds isolated are stable in solution and exhibit characteristic absorption at ∼900 nm, which is assignable to a spin allowed HOMO to LUMO transition, and shows temperature dependent intensity change with variable absorption coefficients presumably due to coupling with some thermal vibrations. The structures and electronic states of the Pd8 chains are found finely tunable by varying the terminal capping ligands. In particular, theoretical calculations elucidated that the HOMO-LUMO energy gap is systematically related to the central Pd-Pd distance (2.7319(6)-2.7575(6) Å) by two ways with neutral ligands L (1, 2, 3) and with anionic ligands X (4), which are reflected on the NIR absorption energy of 867-954 nm. The isocyanide terminated Pd8 complexes (3) further reacted with excess of RNC (6 eq) to afford the Pd4 complexes, [Pd4 (meso-dpmppm)2 (RNC)2 ](BF4 )2 (13), and the cyclic voltammograms of 2 a (L=CH3 CN), 3, and 13 (R=Xyl, Mes, t Bu, Cy) demonstrated wide range redox behaviors from 2{Pd4 }4+ to 2{Pd4 }0 through 2{Pd4 }2+ ↔{Pd8 }4+ , {Pd8 }3+ , and {Pd8 }2+ strings. The oxidized complexes, [Pd4 (meso-dpmppm)2 (RNC)3 ](BF4 )4 (16), were characterized by X-ray analyses, and the two-electron reduced chain of [Pd8 (meso-dpmppm)4 ](BF4 )2 (7) was analyzed by spectroscopic and electrochemical techniques and DFT calculations. Reactions of 2 a with 1 equiv. of aromatic linear bisisocyanide (BI) in CH2 Cl2 deposited insoluble coordination polymers, {[Pd8 (meso-dpmppm)4 (BI)](BF4 )4 }n (5), and interestingly, they were soluble in acetonitrile, 31 P{1 H} and 1 H DOSY NMR spectra as well as SAXS curves suggesting that the coordination polymers may exist in acetonitrile as dynamically 1D self-assembled coordination polymers comprising ca. 50 units of the Pd8 rod averaged within the timescale.
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Affiliation(s)
- Tomoaki Tanase
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, 630-8506, Nara, Japan
| | - Kanako Nakamae
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, 630-8506, Nara, Japan
| | - Haruka Miyano
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, 630-8506, Nara, Japan
| | - Yasuyuki Ura
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, 630-8506, Nara, Japan
| | - Yasutaka Kitagawa
- Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, 560-8531, Toyonaka, Osaka, Japan
| | - Shiho Yada
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, 630-8506, Nara, Japan
| | - Tomokazu Yoshimura
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, 630-8506, Nara, Japan
| | - Takayuki Nakajima
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, 630-8506, Nara, Japan
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3
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Bailey WD, Phearman AS, Luconi L, Rossin A, Yakhvarov DG, D'Accolti L, Flowers SE, Kaminsky W, Kemp RA, Giambastiani G, Goldberg KI. Hydrogenolysis of Dinuclear PCN R Ligated Pd II μ-Hydroxides and Their Mononuclear Pd II Hydroxide Analogues. Chemistry 2019; 25:9920-9929. [PMID: 31090244 DOI: 10.1002/chem.201900507] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 05/05/2019] [Indexed: 11/11/2022]
Abstract
The hydrogenolysis of mono- and dinuclear PdII hydroxides was investigated both experimentally and computationally. It was found that the dinuclear μ-hydroxide complexes {[(PCNR )Pd]2 (μ-OH)}(OTf) (PCNH =1-[3-[(di-tert-butylphosphino)methyl]phenyl]-1H-pyrazole; PCNMe =1-[3-[(di-tert-butylphosphino)methyl]phenyl]-5-methyl-1H-pyrazole) react with H2 to form the analogous dinuclear hydride species {[(PCNR )Pd]2 (μ-H)}(OTf). The dinuclear μ-hydride complexes were fully characterized, and are rare examples of structurally characterized unsupported singly bridged μ-H PdII dimers. The {[(PCNMe )Pd]2 (μ-OH)}(OTf) hydrogenolysis mechanism was investigated through experiments and computations. The hydrogenolysis of the mononuclear complex (PCNH )Pd-OH resulted in a mixed ligand dinuclear species [(PCNH )Pd](μ-H)[(PCC)Pd] (PCC=a dianionic version of PCNH bound through phosphorus P, aryl C, and pyrazole C atoms) generated from initial ligand "rollover" C-H activation. Further exposure to H2 yields the bisphosphine Pd0 complex Pd[(H)PCNH ]2 . When the ligand was protected at the pyrazole 5-position in the (PCNMe )Pd-OH complex, no hydride formed under the same conditions; the reaction proceeded directly to the bisphosphine Pd0 complex Pd[(H)PCNMe ]2 . Reaction mechanisms for the hydrogenolysis of the monomeric and dimeric hydroxides are proposed.
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Affiliation(s)
- Wilson D Bailey
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington, 98195-1700, USA
| | - Alexander S Phearman
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Lapo Luconi
- Institute of Chemistry of Organometallic Compounds, ICCOM-CNR and Consorzio INSTM, Via Madonna del Piano, 10-50019 Sesto Fiorentino, Florence, Italy
| | - Andrea Rossin
- Institute of Chemistry of Organometallic Compounds, ICCOM-CNR and Consorzio INSTM, Via Madonna del Piano, 10-50019 Sesto Fiorentino, Florence, Italy
| | - Dmitry G Yakhvarov
- Kazan Federal University, 420008, Kazan, Russian Federation.,Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 420008, Kazan, Russian Federation
| | - Lucia D'Accolti
- Università di Bari "A. Moro", Via Orabona 4, 70126, Bari, Italy
| | - Sarah E Flowers
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington, 98195-1700, USA
| | - Werner Kaminsky
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington, 98195-1700, USA
| | - Richard A Kemp
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico, 87131, USA.,Advanced Materials Laboratory, Sandia National Laboratories, Albuquerque, New Mexico, 87106, USA
| | - Giuliano Giambastiani
- Institute of Chemistry of Organometallic Compounds, ICCOM-CNR and Consorzio INSTM, Via Madonna del Piano, 10-50019 Sesto Fiorentino, Florence, Italy.,Kazan Federal University, 420008, Kazan, Russian Federation.,Institute of Chemistry and Processes for Energy, Environment and Health (ICPEES), UMR 7515 CNRS-University of Strasbourg (UdS), 25, rue Becquerel, 67087, Strasbourg Cedex 02, France
| | - Karen I Goldberg
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington, 98195-1700, USA.,Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104, USA
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4
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Tanase T, Tanaka M, Hamada M, Morita Y, Nakamae K, Ura Y, Nakajima T. Alloyed Tetranuclear Metal Chains of Pd
4−
n
Pt
n
(
n=
0–3) Scaffolded by a New Linear Tetraphosphine Containing a PNP Bridge. Chemistry 2019; 25:8219-8224. [DOI: 10.1002/chem.201901701] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Indexed: 01/31/2023]
Affiliation(s)
- Tomoaki Tanase
- Department of ChemistryFaculty of ScienceNara Women's University, Kitauoya-nishi-machi Nara 630-8506 Japan
| | - Miho Tanaka
- Department of ChemistryFaculty of ScienceNara Women's University, Kitauoya-nishi-machi Nara 630-8506 Japan
| | - Mami Hamada
- Department of ChemistryFaculty of ScienceNara Women's University, Kitauoya-nishi-machi Nara 630-8506 Japan
| | - Yuka Morita
- Department of ChemistryFaculty of ScienceNara Women's University, Kitauoya-nishi-machi Nara 630-8506 Japan
| | - Kanako Nakamae
- Department of ChemistryFaculty of ScienceNara Women's University, Kitauoya-nishi-machi Nara 630-8506 Japan
| | - Yasuyuki Ura
- Department of ChemistryFaculty of ScienceNara Women's University, Kitauoya-nishi-machi Nara 630-8506 Japan
| | - Takayuki Nakajima
- Department of ChemistryFaculty of ScienceNara Women's University, Kitauoya-nishi-machi Nara 630-8506 Japan
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5
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Tanase T, Yamamoto K, Hatano R, Nakamae K, Kure B, Ura Y, Nakajima T. Linear Triplatinum Tetrahydride Complex Supported by Triphosphine Ligands, [Pt3(µ-H)2(H)2(µ-dpmp)2](BF4)2{dpmp = bis(diphenylphosphinomethyl)phenylphosphine}. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601505] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tomoaki Tanase
- Department of Chemistry; Faculty of Science; Nara Women's University; Kitauoya-nishi-machi 630-8506 Nara Japan
| | - Kana Yamamoto
- Department of Chemistry; Faculty of Science; Nara Women's University; Kitauoya-nishi-machi 630-8506 Nara Japan
| | - Rika Hatano
- Department of Chemistry; Faculty of Science; Nara Women's University; Kitauoya-nishi-machi 630-8506 Nara Japan
| | - Kanako Nakamae
- Department of Chemistry; Faculty of Science; Nara Women's University; Kitauoya-nishi-machi 630-8506 Nara Japan
| | - Bunsho Kure
- Department of Chemistry; Faculty of Science; Nara Women's University; Kitauoya-nishi-machi 630-8506 Nara Japan
| | - Yasuyuki Ura
- Department of Chemistry; Faculty of Science; Nara Women's University; Kitauoya-nishi-machi 630-8506 Nara Japan
| | - Takayuki Nakajima
- Department of Chemistry; Faculty of Science; Nara Women's University; Kitauoya-nishi-machi 630-8506 Nara Japan
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6
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Tanabe M, Yumoto R, Yamada T, Fukuta T, Hoshino T, Osakada K, Tanase T. Planar PtPd 3 Complexes Stabilized by Three Bridging Silylene Ligands. Chemistry 2017; 23:1386-1392. [PMID: 27864855 DOI: 10.1002/chem.201604502] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Indexed: 11/09/2022]
Abstract
A heterobimetallic PtPd3 complex supported by three bridging diphenylsilylene ligands, [Pt{Pd(dmpe)}3 (μ3 -SiPh2 )3 ] (1, dmpe=1,2-bis(dimethylphosphino)ethane), has been synthesized from mononuclear Pd and Pt complexes. The hexagonal core composed of Pt, Pd, and Si atoms is slightly larger than that of the tetrapalladium complex, [Pd{Pd(dmpe)}3 (μ3 -SiPh2 )3 ] (2). Reaction of PhSiH3 with complex 1 in the presence and absence of Ph2 SiH2 results in the formation of a tetranuclear complex with silyl and hydride ligands at the Pt center, [PtH(SiPh2 H){Pd(dmpe)}3 (μ3 -SiHPh)3 ] (3), and an octanuclear complex, [{Pt{Pd(dmpe)}3 (μ3 -SiHPh)3 }2 (κ2 -dmpe)] (5), respectively. Both M-Si (M=Pt, Pd) bond lengths and the 29 Si NMR chemical shifts of 1 and 2 are located between those of mononuclear late transition-metal complexes with a silylene ligand and complexes with donor-stabilized silylene ligands. CuI and AgI adducts of 1 and 2, formulated as [M(μ-M'I){Pd(dmpe)}3 (μ3 -SiPh2 )3 ] (M=Pt, Pd; M'=Cu, Ag), undergo elimination of CuI (AgI) and regenerate the tetrametallic complexes upon heating or addition of a chelating diphosphine. Elimination of AgI from 2-AgI occurs more rapidly than elimination of CuI from 2-CuI, as determined from the results of kinetics experiments.
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Affiliation(s)
- Makoto Tanabe
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Ryouhei Yumoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Tetsuyuki Yamada
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Tomoko Fukuta
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Tsuyoshi Hoshino
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Kohtaro Osakada
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259-R1-3 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Tomoaki Tanase
- Department of Chemistry, Faculty of Science, Nara Woman's University, Kitauoya-higashi-machi, Nara, 630-8506, Japan
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7
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Tanase T, Morita K, Otaki R, Yamamoto K, Kaneko Y, Nakamae K, Kure B, Nakajima T. Chiral Self-Recognition between Stereogenic Tetrapalladium Units Affording Pd8
Chains Supported by Homochiral Tetraphosphines. Chemistry 2016; 23:524-528. [DOI: 10.1002/chem.201605146] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Tomoaki Tanase
- Department of Chemistry; Faculty of Science; Nara Women's University, Kitauoya-nishi-machi; Nara 630-8506 Japan
| | - Konomi Morita
- Department of Chemistry; Faculty of Science; Nara Women's University, Kitauoya-nishi-machi; Nara 630-8506 Japan
| | - Risa Otaki
- Department of Chemistry; Faculty of Science; Nara Women's University, Kitauoya-nishi-machi; Nara 630-8506 Japan
| | - Kana Yamamoto
- Department of Chemistry; Faculty of Science; Nara Women's University, Kitauoya-nishi-machi; Nara 630-8506 Japan
| | - Yukino Kaneko
- 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
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8
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Tanase T, Chikanishi M, Morita K, Nakamae K, Kure B, Nakajima T. Gold and Silver Chains Supported by Linear Hexaphosphine Ligands. Chem Asian J 2015; 10:2619-23. [DOI: 10.1002/asia.201500876] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Tomoaki Tanase
- Department of Chemistry; Faculty of Science; Nara Women's University; Kitauoya-nishi-machi Nara 630-8506 Japan
| | - Mio Chikanishi
- Department of Chemistry; Faculty of Science; Nara Women's University; Kitauoya-nishi-machi Nara 630-8506 Japan
| | - Konomi Morita
- 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
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9
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Nakamae K, Takemura Y, Kure B, Nakajima T, Kitagawa Y, Tanase T. Self-Alignment of Low-Valent Octanuclear Palladium Atoms. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409511] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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10
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Nakamae K, Takemura Y, Kure B, Nakajima T, Kitagawa Y, Tanase T. Self-Alignment of Low-Valent Octanuclear Palladium Atoms. Angew Chem Int Ed Engl 2014; 54:1016-21. [DOI: 10.1002/anie.201409511] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 10/29/2014] [Indexed: 11/08/2022]
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11
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Tanase T, Otaki R, Nishida T, Takenaka H, Takemura Y, Kure B, Nakajima T, Kitagawa Y, Tsubomura T. Strongly luminous tetranuclear gold(I) complexes supported by tetraphosphine ligands, meso- or rac-bis[(diphenylphosphinomethyl)phenylphosphino]methane. Chemistry 2014; 20:1577-96. [PMID: 24403217 DOI: 10.1002/chem.201303729] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Indexed: 11/11/2022]
Abstract
A series of tetragold(I) complexes supported by tetraphosphine ligands, meso- and rac-bis[(diphenylphosphinomethyl)phenylphosphino]methane (meso- and rac-dpmppm) were synthesized and characterized to show that the tetranuclear Au(I) alignment varies depending on syn- and anti-arrangements of the two dpmppm ligands with respect to the metal chain. The structures of syn-[Au4 (meso-dpmppm)2X]X'3 (X = Cl; X' = Cl (4 a), PF6 (4 b), BF4 (4 c)) and syn-[Au4 (meso-dpmppm)2]X4 (X = PF6 (4 d), BF4 (4 e), TfO (4 f); TfO = triflate) involved a bent tetragold(I) core with a counter anion X incorporated into the bent pocket. Complexes anti-[Au4 (meso-dpmppm)2]X4 (X = PF6 (5 d), BF4 (5 e), TfO (5 f)) contain a linearly ordered Au4 string and complexes syn-[Au4 (rac-dpmppm)2X2]X'2 (X = Cl, X' = Cl (6 a), PF6 (6 b), BF4 (6 c)) and syn-[Au4 (rac-dpmppm)2]X4 (X = PF6 (6 d), BF4 (6 e), TfO (6 f)) consist of a zigzag tetragold(I) chain supported by the two syn-arranged rac-dpmppm ligands. Complexes 4 d-f, 5 d-f, and 6 d-f with non-coordinative large anions are strongly luminescent in the solid state (λmax = 475-515 nm, Φ = 0.67-0.85) and in acetonitrile (λmax = 491-520 nm, Φ = 0.33-0.97); the emission was assigned to phosphorescence from (3) [dσ*σ*σ* pσσσ] excited state of the Au4 centers on the basis of DFT calculations as well as the long lifetime (a few μs). The emission energy is predominantly determined by the HOMO and LUMO characters of the Au4 centers, which depend on the bent (4), linear (5), and zigzag (6) alignments. The strong emissions in acetonitrile were quenched by chloride anions through simultaneous dynamic and static quenching processes, in which static binding of chloride ions to the Au4 excited species should be the most effective. The present study demonstrates that the structures of linear tetranuclear gold(I) chains can be modified by utilizing the stereoisomeric tetraphosphines, meso- and rac-dpmppm, which may lead to fine tuning of the strongly luminescent properties intrinsic to the Au(I) 4 cluster centers.
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Affiliation(s)
- Tomoaki Tanase
- Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoya-nishi-machi, Nara, 630-8506 (Japan)
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12
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Murahashi T, Usui K, Tachibana Y, Kimura S, Ogoshi S. Selective construction of Pd2Pt and PdPt2 triangles in a sandwich framework: carbocyclic ligands as scaffolds for a mixed-metal system. Chemistry 2012; 18:8886-90. [PMID: 22714664 DOI: 10.1002/chem.201201474] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2012] [Indexed: 11/08/2022]
Abstract
Sandwich time! The mixed-metal triangular-trinuclear sandwich complexes of Pd(2)Pt and PdPt(2) were selectively synthesized. The Pd(2)Pt and PdPt(2) triangles in a cycloheptatrienyl sandwich framework were identified by (31)P NMR analyses of the tris-triphenylphosphine complexes (see scheme).
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13
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Welsch S, Lescop C, Balazs G, Réau R, Scheer M. Simultaneous End-On/Side-On Coordination Modes of a Diphosphorus Tetrahedral Complex Imposed by Pre-organization of Oligometallic CuI Acceptors. Chemistry 2011; 17:9130-41. [DOI: 10.1002/chem.201100845] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Indexed: 11/10/2022]
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14
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Bollermann T, Freitag K, Gemel C, Seidel RW, von Hopffgarten M, Frenking G, Fischer RA. Chemie von [Zn2Cp*2]: einwertiges {.ZnZnCp*}, stabilisiert in den metallreichen Verbindungen [(Pd,Pt)(GaCp*)a(ZnCp*)4−a(ZnZnCp*)4−a] (a=0, 2). Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201005808] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Bollermann T, Freitag K, Gemel C, Seidel RW, von Hopffgarten M, Frenking G, Fischer RA. The Reactivity of [Zn2Cp*2]: Trapping Monovalent {.ZnZnCp*} in the Metal-Rich Compounds [(Pd,Pt)(GaCp*)a(ZnCp*)4−a(ZnZnCp*)4−a] (a=0, 2). Angew Chem Int Ed Engl 2010; 50:772-6. [PMID: 21226174 DOI: 10.1002/anie.201005808] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Indexed: 11/06/2022]
Affiliation(s)
- Timo Bollermann
- Inorganic Chemistry II-Organometallics & Materials, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, 44780 Bochum, Germany
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Takemura Y, Takenaka H, Nakajima T, Tanase T. Hexa- and Octagold Chains from Flexible Tetragold Molecular Units Supported by Linear Tetraphosphine Ligands. Angew Chem Int Ed Engl 2009; 48:2157-61. [DOI: 10.1002/anie.200806012] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Takemura Y, Takenaka H, Nakajima T, Tanase T. Hexa- and Octagold Chains from Flexible Tetragold Molecular Units Supported by Linear Tetraphosphine Ligands. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200806012] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Nohra B, Rodriguez-Sanz E, Lescop C, Réau R. Chemistry of Bridging Phosphanes: CuI Dimers Bearing 2,5-Bis(2-pyridyl)phosphole Ligands. Chemistry 2008; 14:3391-403. [DOI: 10.1002/chem.200701423] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Chen IWP, Fu MD, Tseng WH, Yu JY, Wu SH, Ku CJ, Chen CH, Peng SM. Conductance and Stochastic Switching of Ligand-Supported Linear Chains of Metal Atoms. Angew Chem Int Ed Engl 2006; 45:5814-8. [PMID: 16871638 DOI: 10.1002/anie.200600800] [Citation(s) in RCA: 136] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- I-Wen Peter Chen
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30013, Republic of China
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Chen IWP, Fu MD, Tseng WH, Yu JY, Wu SH, Ku CJ, Chen CH, Peng SM. Conductance and Stochastic Switching of Ligand-Supported Linear Chains of Metal Atoms. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600800] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Leca F, Lescop C, Rodriguez-Sanz E, Costuas K, Halet JF, Réau R. Bridging Phosphanes: Exotic or Versatile Binucleating Ligands? Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200500529] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Leca F, Lescop C, Rodriguez-Sanz E, Costuas K, Halet JF, Réau R. Bridging Phosphanes: Exotic or Versatile Binucleating Ligands? Angew Chem Int Ed Engl 2005; 44:4362-5. [PMID: 15942961 DOI: 10.1002/anie.200500529] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- François Leca
- UMR 6509, CNRS-Université de Rennes 1, Institut de Chimie, 35042 Rennes Cedex, France
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