1
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Das R, Linseis M, Scheerer S, Zoller K, Senft L, Ivanović-Burmazović I, Winter RF. Reversible Multielectron Release from Redox-Active Three-Dimensional Molecular Barrels with Ruthenium-Alkenyl Moieties. Inorg Chem 2022; 61:12662-12677. [PMID: 35917328 DOI: 10.1021/acs.inorgchem.2c01608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Three-dimensional molecular barrels Ru6-4 and Ru6-5 were synthesized in high yields from dinuclear ruthenium-vinyl clamps and tritopic triphenylamine-derived carboxylate linkers and characterized by multinuclear NMR spectroscopy including 1H-1H COSY and 1H DOSY measurements, high-resolution electrospray ionization mass spectrometry, and X-ray crystallography. The metal frameworks of the cages adopt the shape of twisted trigonal prisms, and they crystallize as racemic mixtures of interdigitating Δ- and Λ-enantiomers with a tight columnar packing in Ru6-4. Electrochemical studies and redox titrations revealed that the cages are able to release up to 11 electrons on the voltammetric timescale and that their cage structures persist up to the hexacation level. IR and UV-vis-near-infrared spectroelectrochemical studies confirm substituent-dependent intramolecular electronic communication within the π-conjugated 1,3-divinylphenylene backbone in the tricationic states, where all three divinylphenylene-bridged diruthenium clamps are present in mixed-valent radical cation states. The formation of 1:3 charge-transfer salts with 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane as the electron acceptor is also demonstrated.
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Affiliation(s)
- Rajorshi Das
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Stefan Scheerer
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Katrin Zoller
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Laura Senft
- Department Chemie, Ludwig-Maximilians Universität München, Butenandtstraße 5-13, Haus D, 81377 München, Germany
| | - Ivana Ivanović-Burmazović
- Department Chemie, Ludwig-Maximilians Universität München, Butenandtstraße 5-13, Haus D, 81377 München, Germany
| | - Rainer F Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
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2
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Fink D, Staiger A, Orth N, Linseis M, Ivanović-Burmazović I, Winter RF. Redox-Induced Hydrogen Bond Reorientation Mimicking Electronic Coupling in Mixed-Valent Diruthenium and Macrocyclic Tetraruthenium Complexes. Inorg Chem 2020; 59:16703-16715. [PMID: 33135894 DOI: 10.1021/acs.inorgchem.0c02695] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We present the coordination-driven self-assembly of three tetranuclear metallacycles containing intracyclic NH2, OH, or OMe functionalities through the combination of various isophthalic acid building blocks with a divinylphenylene diruthenium complex. All new complexes of this study were characterized by means of nuclear magnetic resonance spectroscopy, ultrahigh-resolution ESI mass spectrometry, cyclic and square wave voltammetry and, in two cases, X-ray diffraction. The hydroxy functionalized macrocycle 4-BOH and the corresponding half-cycle 2-OH stand out, as their intracyclic OH···O hydrogen bonds stabilize their mixed-valent one- (2-OH, 4-BOH) and three-electron-oxidized states (4-BOH). Despite sizable redox splittings between all one-electron waves, the mixed-valent monocations and trications do not exhibit any intervalence charge-transfer band, assignable to through-bond electronic coupling, but nevertheless display distinct IR band shifts of their charge-sensitive Ru(CO) tags. We ascribe these seemingly contradicting observations to a redox-induced shuffling of the OH···O hydrogen bond(s) to the remaining, more electron-rich, reduced redox site.
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Affiliation(s)
- Daniel Fink
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Anne Staiger
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Nicole Orth
- Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Ivana Ivanović-Burmazović
- Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Rainer F Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
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3
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Fink D, Orth N, Linseis M, Ivanović‐Burmazović I, Winter RF. Structural Versatility and Supramolecular Isomerism in Redox‐Active Tetra‐ and Hexaruthenium Macrocycles. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000387] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Daniel Fink
- Fachbereich Chemie Universität Konstanz Universitätsstraße 10 78457 Konstanz Germany
| | - Nicole Orth
- Department Chemie und Pharmazie Friedrich‐Alexander‐Universität Erlangen‐Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Michael Linseis
- Fachbereich Chemie Universität Konstanz Universitätsstraße 10 78457 Konstanz Germany
| | - Ivana Ivanović‐Burmazović
- Department Chemie und Pharmazie Friedrich‐Alexander‐Universität Erlangen‐Nürnberg Egerlandstraße 1 91058 Erlangen Germany
| | - Rainer F. Winter
- Fachbereich Chemie Universität Konstanz Universitätsstraße 10 78457 Konstanz Germany
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4
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Fink D, Orth N, Ebel V, Gogesch FS, Staiger A, Linseis M, Ivanović-Burmazović I, Winter RF. Self-Assembled Redox-Active Tetraruthenium Macrocycles with Large Intracyclic Cavities. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00116] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel Fink
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Nicole Orth
- Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Viktoria Ebel
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Franciska S. Gogesch
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Anne Staiger
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Ivana Ivanović-Burmazović
- Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058 Erlangen, Germany
| | - Rainer F. Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
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5
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Soumya KR, Arumugam R, Shankar B, Sathiyendiran M. Sulfate Donor Based Dinuclear Heteroleptic Triple-Stranded Helicates from Sulfite and Ditopic Nitrogen Donor Ligands and Their Transformation to Dinuclear Homoleptic Double-Stranded Mesocates. Inorg Chem 2018; 57:10718-10725. [PMID: 30106570 DOI: 10.1021/acs.inorgchem.8b01343] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Sulfate donor based supramolecular coordination complexes [{ fac-Re(CO)3}(μ-SO4)(L n)2{ fac-Re(CO)3}] (1-3) were obtained using ditopic N donors (L n; n = 1-3), NaHSO3, and Re2(CO)10 in a one-pot, multicomponent, coordination-driven self-assembly approach, in which SO32- becomes oxidized to SO42- during the reaction and acts as a building framework. Complexes 1-3 were characterized using IR, ESI-TOF-MS, and 1H NMR spectroscopy. The structures of complexes 1-3 were confirmed using single-crystal X-ray diffraction analysis. The transformation of the dinuclear heteroleptic triple-stranded helicate to the dinuclear homoleptic double-stranded mesocate [{Re(CO)3Cl}2(L n)2] (L n = L1, L2, L3; 4a-6a) was achieved by the addition of BaCl2. The direct treatment of Re(CO)5X (X = Cl, Br) with L1/L2/L3 yielded the dinuclear homoleptic double-stranded helicates [{Re(CO)3X}2 (L n)2] (4b-6b and 7-9).
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Affiliation(s)
- K R Soumya
- School of Chemistry , University of Hyderabad , Hyderabad 500046 , India
| | - Ramar Arumugam
- School of Chemistry , University of Hyderabad , Hyderabad 500046 , India
| | - Bhaskaran Shankar
- School of Chemistry , University of Hyderabad , Hyderabad 500046 , India
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6
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Gupta D, Sathiyendiran M. Rhenium‐Carbonyl‐Based Supramolecular Coordination Complexes: Synthesis, Structure and Properties. ChemistrySelect 2018. [DOI: 10.1002/slct.201800904] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Deepak Gupta
- Department of ChemistryBhaskaracharya College of Applied SciencesUniversity of Delhi, Sector-2 Dwarka New Delhi-110075 India
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7
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fac-Re(CO)3-based organometallic supramolecular coordination complexes using thiophene motif decorated flexible ditopic benzimidazolyl donor. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.04.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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8
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Fink D, Linseis M, Winter RF. Constitutional Isomers of Macrocyclic Tetraruthenium Complexes with Vastly Different Spectroscopic and Electrochemical Properties. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00057] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel Fink
- Fachbereich Chemie, Universität Konstanz, 78457 Konstanz, Germany
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, 78457 Konstanz, Germany
| | - Rainer F. Winter
- Fachbereich Chemie, Universität Konstanz, 78457 Konstanz, Germany
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9
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Huang YC, Chen HY, Cheng CY, Tsai YL, Chiang MY, Hsu SCN. Stepwise and Self-Assembly Synthesis of Tetranuclear Iron-Thiolate-Diisocyanide Metallocyclophane Complexes. J CHIN CHEM SOC-TAIP 2016. [DOI: 10.1002/jccs.201600776] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yen-Chung Huang
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; Kaohsiung 807 Taiwan
| | - Hsuan-Ying Chen
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; Kaohsiung 807 Taiwan
| | - Chau-Yu Cheng
- Department of Chemistry; National Sun Yat-Sen University; Kaohsiung 804 Taiwan
| | - Yu-Lin Tsai
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; Kaohsiung 807 Taiwan
| | - Michael Y. Chiang
- Department of Chemistry; National Sun Yat-Sen University; Kaohsiung 804 Taiwan
| | - Sodio C. N. Hsu
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University; Kaohsiung 807 Taiwan
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10
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Scheerer S, Linseis M, Wuttke E, Weickert S, Drescher M, Tröppner O, Ivanović-Burmazović I, Irmler A, Pauly F, Winter RF. Redox-Active Tetraruthenium Macrocycles Built from 1,4-Divinylphenylene-Bridged Diruthenium Complexes. Chemistry 2016; 22:9574-90. [PMID: 27270860 DOI: 10.1002/chem.201601384] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Indexed: 11/09/2022]
Abstract
Metallamacrocylic tetraruthenium complexes were generated by treatment of 1,4-divinylphenylene-bridged diruthenium complexes with functionalized 1,3-benzene dicarboxylic acids and characterized by HR ESI-MS and multinuclear NMR spectroscopy. Every divinylphenylene diruthenium subunit is oxidized in two consecutive one-electron steps with half-wave potential splittings in the range of 250 to 330 mV. Additional, smaller redox-splittings between the +/2+ and 0/+ and the 3+/4+ and 2+/3+ redox processes, corresponding to the first and the second oxidations of every divinylphenylene diruthenium entity, are due to electrostatic effects. The lack of electronic coupling through bond or through space is explained by the nodal properties of the relevant molecular orbitals and the lateral side-by-side arrangement of the divinylphenylene linkers. The polyelectrochromic behavior of the divinylphenylene diruthenium precursors is retained and even amplified in these metallamacrocyclic structures. EPR studies down to T=4 K indicate that the dications 1-H(2+) and 1-OBu(2+) are paramagnetic. The dications and the tetracation of macrocycle 3-H display intense (dications) or weak (3-H(4+) ) EPR signals. Quantum chemical calculations indicate that the four most stable conformers of the macrocycles are largely devoid of strain. Bond parameters, energies as well as charge and spin density distributions of model macrocycle 5-H(Me) were calculated for the different charge and spin states.
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Affiliation(s)
- Stefan Scheerer
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Evelyn Wuttke
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany.,Boehringer Ingelheim Pharma GmbH & CO. KG, Birkendorfer Straße 65, 88397, Biberach a. d. Riß, Germany
| | - Sabrina Weickert
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Malte Drescher
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Oliver Tröppner
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058, Erlangen, Germany
| | - Ivana Ivanović-Burmazović
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058, Erlangen, Germany
| | - Andreas Irmler
- Fachbereich Physik, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany
| | - Fabian Pauly
- Fachbereich Physik, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany.
| | - Rainer F Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457, Konstanz, Germany.
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11
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Qi H, Zhang C, Huang Z, Wang L, Wang W, Bard AJ. Electrochemistry and Electrogenerated Chemiluminescence of 1,3,5-Tri(anthracen-10-yl)-benzene-Centered Starburst Oligofluorenes. J Am Chem Soc 2016; 138:1947-54. [PMID: 26794226 DOI: 10.1021/jacs.5b12184] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The electrochemistry and electrogenerated chemiluminescence (ECL) of three 1,3,5-tri(anthracen-10-yl)-benzene-centered starburst oligofluorenes (T1-T3) are reported in this paper. The compounds T1-T3 contain 1,3,5-tri(anthracen-10-yl)-benzene as a core with fluorene as an arm from monofluorene to trifluorene groups (n = 1-3), generating a rigid three-dimensional structure. The electrochemical behaviors of these compounds are likely to be tuned by the fluorene arms. In cyclic voltammograms, both the oxidation and reduction of T1 and T2 are characterized by three reversible one-electron transfers from the core while the oxidation and reduction of T3 are characterized by six reversible one-electron transfers from the core and the arms in acetonitrile:benzene (v:v = 1:1) solvent. The second oxidation and reduction waves of T1 show three reversible one-electron transfers from three fluorene arms, while the second and third oxidation and reduction waves of T2 and T3 exhibit three reversible one-electron transfers from the six fluorene arms. The multiple electron transfers in one molecule are confirmed by chronoamperometry at an ultramicroelectrode, simulations and DFT calculations. The T1-T3 compounds display strong absorption in UV-vis and blue fluorescence emission. Strong blue ECL emissions can be generated from T1, T2 and T3 under ion annihilation condition, which is assigned as S-route.
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Affiliation(s)
- Honglan Qi
- Center for Electrochemistry, Department of Chemistry and Biochemistry, The University of Texas , Austin, Texas 78712, United States.,Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710062, PR China
| | - Chengxiao Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710062, PR China
| | - Zhi Huang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology , Wuhan 430074, PR China
| | - Lei Wang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology , Wuhan 430074, PR China
| | - Weina Wang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710062, PR China
| | - Allen J Bard
- Center for Electrochemistry, Department of Chemistry and Biochemistry, The University of Texas , Austin, Texas 78712, United States
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12
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Fink D, Weibert B, Winter RF. Redox-active tetraruthenium metallacycles: reversible release of up to eight electrons resulting in strong electrochromism. Chem Commun (Camb) 2016; 52:6103-6. [DOI: 10.1039/c6cc00936k] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tetraruthenium macrocycles with 1,4-divinylphenylene and diarylamine-substituted isophthalic acids as the sides display up to eight one-electron redox steps and rich electrochromic behaviour with strong absorptions of the dications in the near infrared and of the tetra- and hexacations at low energies in the visible.
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Affiliation(s)
- Daniel Fink
- Fachbereich Chemie
- Universität Konstanz
- D-78453 Konstanz
- Germany
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13
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Castellano M, Ruiz-García R, Cano J, Ferrando-Soria J, Pardo E, Fortea-Pérez FR, Stiriba SE, Barros WP, Stumpf HO, Cañadillas-Delgado L, Pasán J, Ruiz-Pérez C, de Munno G, Armentano D, Journaux Y, Lloret F, Julve M. Metallosupramolecular approach toward multifunctional magnetic devices for molecular spintronics. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2015.05.013] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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14
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Neutral discrete metal–organic cyclic architectures: Opportunities for structural features and properties in confined spaces. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.07.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Castellano M, Barros WP, Acosta A, Julve M, Lloret F, Li Y, Journaux Y, De Munno G, Armentano D, Ruiz‐García R, Cano J. Dicopper(II) Anthraquinophanes as Multielectron Reservoirs for Oxidation and Reduction: A Joint Experimental and Theoretical Study. Chemistry 2014; 20:13965-75. [DOI: 10.1002/chem.201403987] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Indexed: 11/09/2022]
Affiliation(s)
- María Castellano
- Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, València (Spain)
| | - Wdeson P. Barros
- Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, València (Spain)
- CAPES Foundation, Ministry of Education of Brazil, Brasília DF. (Brazil)
| | - Alvaro Acosta
- Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, València (Spain)
| | - Miguel Julve
- Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, València (Spain)
| | - Francesc Lloret
- Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, València (Spain)
| | - Yanling Li
- Institut Parisien de Chimie Moléculaire, Sorbonne Universités, UPMC Univ Paris 06, 75005 Paris (France)
- CNRS, UMR 8232
| | - Yves Journaux
- Institut Parisien de Chimie Moléculaire, Sorbonne Universités, UPMC Univ Paris 06, 75005 Paris (France)
- CNRS, UMR 8232
| | - Giovanni De Munno
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87030 Cosenza (Italy)
| | - Donatella Armentano
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87030 Cosenza (Italy)
| | - Rafael Ruiz‐García
- Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, València (Spain)
- Fundació General de la Universitat de València (FGUV)
| | - Joan Cano
- Instituto de Ciencia Molecular (ICMol), Universitat de València, 46980 Paterna, València (Spain)
- Fundació General de la Universitat de València (FGUV)
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16
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Biswas S, Dutta A, Dolai M, Bhowmick I, Rouzières M, Lee HM, Clérac R, Ali M. Dinuclear Cu
II
–Cu
II
and Cu
I
–Cu
II
Complexes of a Compartmental Ligand – Syntheses, Structures, Magnetic, and Catalytic Studies. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300576] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Surajit Biswas
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India E‐mail: , http://www.jaduniv.edu.in/profile.php?uid=30
| | - Arpan Dutta
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India E‐mail: , http://www.jaduniv.edu.in/profile.php?uid=30
| | - Malay Dolai
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India E‐mail: , http://www.jaduniv.edu.in/profile.php?uid=30
| | - Indrani Bhowmick
- CNRS, CRPP, UPR 8641, 33600 Pessac, France
- Univ. Bordeaux, CRPP, UPR 8641, 33600 Pessac, France
| | - Mathieu Rouzières
- CNRS, CRPP, UPR 8641, 33600 Pessac, France
- Univ. Bordeaux, CRPP, UPR 8641, 33600 Pessac, France
| | - Hon Man Lee
- National Changhua University of Education, Department of Chemistry, Changhua 50058, Taiwan
| | - Rodolphe Clérac
- CNRS, CRPP, UPR 8641, 33600 Pessac, France
- Univ. Bordeaux, CRPP, UPR 8641, 33600 Pessac, France
| | - Mahammad Ali
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India E‐mail: , http://www.jaduniv.edu.in/profile.php?uid=30
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17
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Multielectron Redox Chemistry of a Neutral, NIR-Active, Indigo-Pillared ReI-Based Triangular Metalloprism. Chemistry 2012; 18:5275-83. [DOI: 10.1002/chem.201102087] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Revised: 12/09/2011] [Indexed: 11/07/2022]
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18
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Lin PC, Chen HY, Chen PY, Chiang MH, Chiang MY, Kuo TS, Hsu SCN. Self-Assembly and Redox Modulation of the Cavity Size of an Unusual Rectangular Iron Thiolate Aryldiisocyanide Metallocyclophane. Inorg Chem 2011; 50:10825-34. [DOI: 10.1021/ic201380k] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pei-Chin Lin
- Department of Medicinal
and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Hsing-Yin Chen
- Department of Medicinal
and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Po-Yu Chen
- Department of Medicinal
and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Ming-Hsi Chiang
- Institute of Chemistry, Academia Sinica, Nankang, Taipei 115,
Taiwan
| | - Michael Y. Chiang
- Department
of Chemistry, National Sun Yat-Sen University, Kaohsiung
804, Taiwan
| | - Ting-Shen Kuo
- Department of Chemistry, National Taiwan Normal University, Taipei
116, Taiwan
| | - Sodio C. N. Hsu
- Department of Medicinal
and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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19
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Abstract
The potential of redox-active ligands to behave "noninnocently" in transition-metal coordination compounds is reflected with respect to various aspects and situations. These include the question of establishing "correct" oxidation states, the identification and characterization of differently charged radical ligands, the listing of structural and other consequences of ligand redox reactions, and the distinction between barrierless delocalized "resonance" cases M(n)/L(n) ↔ M(n+1)L(n-1) versus separated valence tautomer equilibrium situations M(n)/L(n) ⇌ M(n+1)L(n-1). Further ambivalence arises for dinuclear systems with radical bridge M(n)(μ-L(•))M(n) versus mixed-valent alternatives M(n+1)(μ-L(-))M(n), for noninnocent ligand-bridged coordination compounds of higher nuclearity such as (μ(3)-L)M(3), (μ(4)-L)M(4), (μ-L)(4)M(4), or coordination polymers. Conversely, the presence of more than one noninnocently behaving ligand at a single transition-metal site in situations such as L(n)-M-L(n-1) or L(•)-M-L(•) may give rise to corresponding ligand-to-ligand interaction phenomena (charge transfer, electron hopping, and spin-spin coupling) and to redox-induced electron transfer with counterintuitive oxidation-state changes. The relationships of noninnocent ligand behavior with excited-state descriptions and perspectives regarding material properties and single-electron or multielectron reactivity are also illustrated briefly.
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Affiliation(s)
- Wolfgang Kaim
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany.
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20
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Gupta D, Rajakannu P, Shankar B, Shanmugam R, Hussain F, Sarkar B, Sathiyendiran M. Furan-decorated neutral Re(i)-based 2D rectangle and 3D trigonal prism. Dalton Trans 2011; 40:5433-5. [DOI: 10.1039/c0dt01227k] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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21
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Bhattacharya D, Sathiyendiran M, Wu JY, Chang CH, Huang SC, Zeng YL, Lin CY, Thanasekaran P, Lin BC, Hsu CP, Lee GH, Peng SM, Lu KL. Quinonoid-Bridged Chair-Shaped Dirhenium(I) Metallacycles: Synthesis, Characterization, and Spectroelectrochemical Studies. Inorg Chem 2010; 49:10264-72. [DOI: 10.1021/ic9018794] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
| | | | - Jing-Yun Wu
- Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan
| | - Che-Hao Chang
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Sung-Chou Huang
- Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan
| | - Yu-Ling Zeng
- Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan
| | - Ching-Yao Lin
- Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan
| | | | - Bo-Chao Lin
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Chao-Ping Hsu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Gene-Hsiang Lee
- Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Shie-Ming Peng
- Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Kuang-Lieh Lu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
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22
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Ning GH, Yao LY, Liu LX, Xie TZ, Li YZ, Qin Y, Pan YJ, Yu SY. Self-Assembly and Host−Guest Interaction of Metallomacrocycles Using Fluorescent Dipyrazole Linker with Dimetallic Clips. Inorg Chem 2010; 49:7783-92. [DOI: 10.1021/ic100724r] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guo-Hong Ning
- Laboratory for Self-Assembly Chemistry, Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Liao-Yuan Yao
- Laboratory for Self-Assembly Chemistry, Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Li-Xia Liu
- Laboratory for Self-Assembly Chemistry, Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Ting-Zheng Xie
- Laboratory for Self-Assembly Chemistry, Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Yi-Zhi Li
- Department of Chemistry, State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute and Key Lab of Analytical Chemistry for Life Science, Ministry of Education, Nanjing University, Nanjing 210093, People's Republic of China
| | - Yu Qin
- Department of Chemistry, State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute and Key Lab of Analytical Chemistry for Life Science, Ministry of Education, Nanjing University, Nanjing 210093, People's Republic of China
| | - Yuan-Jiang Pan
- Department of Chemistry, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Shu-Yan Yu
- Laboratory for Self-Assembly Chemistry, Department of Chemistry, Renmin University of China, Beijing 100872, China
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23
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Kavakli C, Schwederski B, Fiedler J, Gudat D, Kaim W. Ligand-based Reduction in a Molecular Rectangle with Four Organplatinum(IV) Vertices. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.200900445] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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24
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Structure, electrochemistry, spectroscopy, and magnetic resonance, including high-field EPR, of {(μ-abpy)[Re(CO)3X]2}o/•−, where abpy=2,2′-azobispyridine and X=F, Cl, Br, I. J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2008.09.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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25
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Bhattacharya D, Sathiyendiran M, Luo TT, Chang CH, Cheng YH, Lin CY, Lee GH, Peng SM, Lu KL. Ground and Excited Electronic States of Quininone-Containing Re(I)-Based Rectangles: a Comprehensive Study of Their Preparation, Electrochemistry, and Photophysics. Inorg Chem 2009; 48:3731-42. [DOI: 10.1021/ic8024099] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dibyendu Bhattacharya
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Malaichamy Sathiyendiran
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Tzuoo-Tsair Luo
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Che-Hao Chang
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Yu-Hsiang Cheng
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Ching-Yao Lin
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Gene-Hsiang Lee
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Shie-Ming Peng
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
| | - Kuang-Lieh Lu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, Department of Applied Chemistry, National Chi Nan University, Nantou 545, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 107, Taiwan
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26
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Mukherjee P, Drew MGB, Estrader M, Ghosh A. Coordination-Driven Self-Assembly of a Novel Carbonato-Bridged Heteromolecular Neutral Nickel(II) Triangle by Atmospheric CO2 Fixation. Inorg Chem 2008; 47:7784-91. [DOI: 10.1021/ic800786s] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pampa Mukherjee
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata-700 009, India, School of Chemistry, The University of Reading, P. O. Box 224, Whiteknights, Reading RG 66AD, United Kingdom, and Departament de Química Inorgànica, Universitat de Barcelona, Marti i Franques 1-11,08028-Barcelona, Spain
| | - Michael G. B. Drew
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata-700 009, India, School of Chemistry, The University of Reading, P. O. Box 224, Whiteknights, Reading RG 66AD, United Kingdom, and Departament de Química Inorgànica, Universitat de Barcelona, Marti i Franques 1-11,08028-Barcelona, Spain
| | - Marta Estrader
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata-700 009, India, School of Chemistry, The University of Reading, P. O. Box 224, Whiteknights, Reading RG 66AD, United Kingdom, and Departament de Química Inorgànica, Universitat de Barcelona, Marti i Franques 1-11,08028-Barcelona, Spain
| | - Ashutosh Ghosh
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata-700 009, India, School of Chemistry, The University of Reading, P. O. Box 224, Whiteknights, Reading RG 66AD, United Kingdom, and Departament de Química Inorgànica, Universitat de Barcelona, Marti i Franques 1-11,08028-Barcelona, Spain
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27
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Wu JY, Thanasekaran P, Cheng YW, Lee CC, Manimaran B, Rajendran T, Liao RT, Lee GH, Peng SM, Lu KL. Unprecedented Reduction of 2,2′-Bipyrimidine in a One-Pot Synthesis of Neutral Rhenium(I)-Based Molecular Rectangles. Organometallics 2008. [DOI: 10.1021/om700873x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Jing-Yun Wu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - P. Thanasekaran
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Yi-Wei Cheng
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Chung-Chou Lee
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - B. Manimaran
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - T. Rajendran
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Rong-Tang Liao
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Gene-Hsiang Lee
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Shie-Ming Peng
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Kuang-Lieh Lu
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan, and Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
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28
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Kavakli C, Gabrielsson A, Sieger M, Schwederski B, Niemeyer M, Kaim W. Reversible radical complex formation of an organometallic diplatinum(IV) compound. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.01.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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29
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Menozzi E, Busi M, Massera C, Ugozzoli F, Zuccaccia D, Macchioni A, Dalcanale E. Metal-Directed Self-Assembly of Cavitand Frameworks. J Org Chem 2006; 71:2617-24. [PMID: 16555812 DOI: 10.1021/jo052460m] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The self-assembly between bidentate cavitand ligands and mono/dinuclear metal precursors to give cavitand frameworks has been explored. For this purpose, two new cavitands bearing AB and AC phenylpyridyl moieties at the upper rim have been synthesized. A series of self-assembled molecular dimers featuring fac-Re(CO)(3)Br as metal corners have been prepared and characterized. Two possible dimeric structures (C-shaped and S-shaped) are possible when AB cavitand 2 is used in the self-assembly reaction; only one is obtained in the case of AC cavitand 3. In addition, the self-assembly of AB-dibridged cavitand 2 with dinuclear Pd/Pt metal precursors 5a and 5b has been studied. At this level of complexity, the self-assembly can lead to more than one structure. Several different final structures have been envisioned and their formation analyzed in silico and in solution. Out of the three possible cyclic structures (dimer, trimer, and tetramer), only the entropically favored dimer 6a (6b) is formed, as predicted from molecular modeling and demonstrated by PGSE NMR experiments.
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Affiliation(s)
- Edoardo Menozzi
- Dipartimento di Chimica Organica ed Industriale and Unità INSTM, Università di Parma, Parco Area delle Scienze 17/A, 43100 Parma, Italy
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30
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Amijs CHM, van Klink GPM, van Koten G. Metallasupramolecular architectures, an overview of functional properties and applications. Dalton Trans 2006:308-27. [PMID: 16365645 DOI: 10.1039/b505354d] [Citation(s) in RCA: 150] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of metallasupramolecular architectures, such as two-dimensional squares, triangles and polygons, and three-dimensional cages and polyhedra, has attracted much interest in the past decade. These structures are designed to have novel specific shapes and dimensions with interesting functional properties. In this overview the functional properties of metallasupramolecular architectures are highlighted with emphasis on potential applications such as catalysis, cavity-directed synthesis and sensing, that can be performed with these materials.
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Affiliation(s)
- Catelijne H M Amijs
- Department of Organic Chemistry and Catalysis, Debye Institute, Utrecht University, The Netherlands
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31
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Yu SY, Huang HP, Li SH, Jiao Q, Li YZ, Wu B, Sei Y, Yamaguchi K, Pan YJ, Ma HW. Solution Self-Assembly, Spontaneous Deprotonation, and Crystal Structures of Bipyrazolate-Bridged Metallomacrocycles with Dimetal Centers. Inorg Chem 2005; 44:9471-88. [PMID: 16323935 DOI: 10.1021/ic0509332] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of nanosized cavity-containing bipyrazolate-bridged metallomacrocycles with dimetal centers, namely, {[(bpy)M]8L4}(NO3)8 [L=3,3',5,5'-tetramethyl-4,4'-bipyrazolyl, Pd, Pt; 1,4-bis-4'-(3',5'-dimethyl)-pyrazolylbenzene), Pd; and 1,4-bis-4'-(3',5'-dimethyl)-pyrazolylbiphenyl, Pd], {[(phen)M]8L4}(NO3)8 [L=3,3',5,5'-tetramethyl-4,4'-bipyrazolyl, Pd, Pt; 1,4-bis-4'-(3',5'-dimethyl)-pyrazolylbenzene, Pd; and 1,4-bis-4'-(3',5'-dimethyl)-pyrazolylbiphenyl, Pd], {[(bpy)Pd]6L3}(NO3)6 [L=1,4-bis-4'-(3',5'-dimethyl)-pyrazolylbenzene,], {[(phen)Pd]6L3}(NO3)6 [L=1,4-bis-4'-(3',5'-dimethyl)-pyrazolylbenzene,], {[(bpy)Pd]4L2}(NO3)4 [L=1,3-bis-4'-(3',5'-dimethyl)-pyrazolylbenzene, and 1,2-bis-4'-(3',5'-dimethyl)-pyrazolylbenzene,], and {[(phen)Pd]4L2}(NO3)4 [L=1,3-bis-4'-(3',5'-dimethyl)-pyrazolylbenzene, and 1,2-bis-4'-(3',5'-dimethyl)-pyrazolylbenzene,] (where bpy=2,2'-bipyridine and phen=1,10-phenanthroline) have been synthesized through a directed self-assembly approach that involves spontaneous deprotonation of the 1H-bipyrazolyl ligands in aqueous solution. These complexes, with weak Pd(II)...Pd(II) or Pt(II)...Pt(II) interactions, have been characterized by elemental analysis, 1H and 13C NMR, cold-spray ionization or electrospray ionization mass spectrometry, UV-visible spectroscopy, and luminescence spectroscopy. Complexes and have also been characterized by single-crystal X-ray diffraction analysis.
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Affiliation(s)
- Shu-Yan Yu
- State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, and Graduate School of the Chinese Academy of Sciences, Beijing 100080, People's Republic of China.
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32
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Dinolfo PH, Benkstein KD, Stern CL, Hupp JT. C- and Z-Shaped Coordination Compounds. Synthesis, Structure, and Spectroelectrochemistry of cis- and trans-[Re(CO)3(L)]2-2,2‘-bisbenzimidizolate with L = 4-Phenylpyridine, 2,4‘-Bipyridine, or Pyridine. Inorg Chem 2005; 44:8707-14. [PMID: 16296824 DOI: 10.1021/ic050894u] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of C- and Z-shaped complexes of the form cis- and trans-[Re(CO)3(L)]2BiBzIm, where L = 4-phenylpyridine, 2,4'-bipyridine, or pyridine and BiBzIm = 2,2'-bisbenzimidizolate, have been synthesized by the reaction of [Re(CO)4]2BiBzIm with a slight excess of L in refluxing tetrahydrofuran. Five of the six compounds have been isolated and crystallographically and electrochemically characterized. Formation of the sixth, the cis form of the [Re(CO)3(4-phenylpyridine)]2BiBzIm, is evidently inhibited by the torsional steric demands of proximal 4-phenylpyridines. The compounds are acyclic analogues of recently studied tetrarhenium molecular rectangles and are of interest, in part, because of their potential to form ligand-centered mixed-valence (LCMV) compounds upon reduction by one electron. Spectroelectrochemical measurements corroborated the formation of a LCMV version of cis-[Re(CO)3(L)]2BiBzIm but failed to uncover a ligand-based intervalence transition. Electrochemical measurements revealed isomer-dependent L/L electrostatic effects, resulting in greater mixed-valence ion comproportionation for C-shaped assemblies versus Z-shaped assemblies.
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Affiliation(s)
- Peter H Dinolfo
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA
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33
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Das N, Arif AM, Stang PJ, Sieger M, Sarkar B, Kaim W, Fiedler J. Self-Assembly of Heterobimetallic Neutral Macrocycles Incorporating Ferrocene Spacer Groups: Spectroelectrochemical Analysis of the Double Two-Electron Oxidation of a Molecular Rectangle. Inorg Chem 2005; 44:5798-804. [PMID: 16060632 DOI: 10.1021/ic0481834] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two Pt(4)-Fe(2) mixed-metal neutral assemblies, 4 and 5, incorporating four bis(triethylphosphine)platinum(II) centers, two flexible bridging 1,1'-ferrocenedicarboxylates, and two rigid 2,9-phenanthrenediyl (4) or 1,8-anthracenediyl (5) bridges, have been synthesized. X-ray characterization of 4 and 5 reveals the formation of discrete and highly symmetrical heterobimetallic neutral species possessing a rhomboidal and rectangular shape, respectively. The rectangular molecules, 5, could be reversibly oxidized in two two-electron steps, separated by 0.21 V. Spectroelectrochemistry in the UV-vis-NIR region confirms the ferrocene groups as primary oxidation sites; however, the intermediate 5(2+) is EPR silent even at 4 K due to enhanced EPR relaxation involving the oxidizable 1,8-anthracenediyl linkers.
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Affiliation(s)
- Neeladri Das
- University of Utah, Department of Chemistry 315 South 1400 East, Salt Lake City, 84112, USA
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Li MX, Bai Y, Zhang BG, Duan CY, Xu J, Meng QJ. Heterometallic Compounds Assembled from Ferrocene-Containing Bisthiosemicarbazone Clips. Inorg Chem 2005; 44:5459-66. [PMID: 16022544 DOI: 10.1021/ic0502067] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Heteropolynuclear organometallic compounds have been constructed by using the ferrocene-based ligand H(2)L, [NH(2)SCNHN=C(CH(3))(C(5)H(4))](2)Fe. Reaction of the ligand H(2)L with the cobalt(II) salt gave a tetranuclear helicate Co(2)Fe(2) (1) with two ferrocene-based clips wrapped around the two cobalt atoms. The chiral helicates recognized the neighbors with same chirality through intermolecular hydrogen bonding between the thiosemicarbazone moieties to form a one-dimensional chiral channel. Reaction of the ligand H(2)L with the cadmium(II) salt afforded a tetranuclear dimeric compound Cd(2)Fe(2) (2), with two symmetric related parts bridged through two sulfur atoms. Reaction of the ligand H(2)L with the copper(I) salt, in the presence of triethylamine, resulted in a hexanuclear compound Cu(4)Fe(2) (3) with a crownlike Cu(4)S(4) octagon similar to that of S(8) sited inside and two ferrocene-containing ligands positioned outside. Electrochemical measurements were displayed to investigate the redox communications between the ferrocene moieties through metal centers.
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Affiliation(s)
- Ming-Xue Li
- Coordination Chemistry Institute, The State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, P. R. China
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35
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Kaim W, Dogan A, Klein A, Záliš S. Complexes of 1,3-Bis(diphenylphosphano)propane (dppp) with Dichloroplatinum(II) and Bis(chlorogold(I)): Intramolecular versus Intermolecular AuI-AuI Association of [(μ-dppp)(AuCl)2] incatena andcyclo Forms. Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200400514] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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36
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Thanasekaran P, Liao RT, Liu YH, Rajendran T, Rajagopal S, Lu KL. Metal-containing molecular rectangles: synthesis and photophysical properties. Coord Chem Rev 2005. [DOI: 10.1016/j.ccr.2004.11.006] [Citation(s) in RCA: 161] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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37
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Iengo E, Zangrando E, Baiutti E, Munini F, Alessio E. Synthesis and Structural and Spectroscopic Characterization of New RuII-dmso Precursors with Face-Capping Ligands for Use in Self-Assembly Reactions. Eur J Inorg Chem 2005. [DOI: 10.1002/ejic.200400717] [Citation(s) in RCA: 38] [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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38
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Lin R, Yip JHK, Zhang K, Koh LL, Wong KY, Ho KP. Self-Assembly and Molecular Recognition of a Luminescent Gold Rectangle. J Am Chem Soc 2004; 126:15852-69. [PMID: 15571410 DOI: 10.1021/ja0456508] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A luminescent molecular rectangle [Au(4)(micro-PAnP)(2)(micro-bipy)(2)](OTf)(4) (1.(OTf)(4)) (PAnP = 9,10-bis(diphenylphosphino)anthracene, bipy = 4,4'-bipyridine, X = NO(3)(-) or OTf(-)), synthesized from the self-assembly of the molecular "clip" Au(2)(micro-PAnP)(OTf)(2) and bipy, shows a large rectangular cavity of 7.921(3) x 16.76(3) A. The electronic absorption and emission spectroscopy, and electrochemistry of the metallacyclophane, have been studied. The 1(4+) ions are self-assembled into 2D mosaic in the solid state via complementary edge-to-face interactions between the Ph groups. (1)H NMR titrations ratify the 1:1 complexation between 1(4+) and various aromatic molecules. Comparing the structures of the inclusion complexes indicates an induced-fit mechanism operating in the binding. The emission of 1(4+) is quenched upon the guest binding. The binding constants are determined by both (1)H NMR and fluorescence titrations. Solvophobic and ion-dipole effects are shown to be important in stabilizing the inclusion complexes.
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Affiliation(s)
- Ronger Lin
- Department of Chemistry, The National University of Singapore, 10 Kent Ridge Crescent, 119260, Singapore
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39
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Dinolfo PH, Williams ME, Stern CL, Hupp JT. Rhenium-Based Molecular Rectangles as Frameworks for Ligand-Centered Mixed Valency and Optical Electron Transfer. J Am Chem Soc 2004; 126:12989-3001. [PMID: 15469297 DOI: 10.1021/ja0473182] [Citation(s) in RCA: 183] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of six neutral, tetrametallic, molecular rectangles has been synthesized that have the form ([Re(CO)(3)](2)BiBzIm)(2)-mu,mu'-(LL)(2), where BiBzIm is 2,2'-bisbenzimidazolate and LL is a reducible, dipyridyl or diazine ligand. X-ray crystallographic studies of the six show that the rectangle frameworks, as defined by the metal atoms, range in size from 5.7 A x 7.2 A to 5.7 A x 19.8 A. The singly reduced rectangles are members of an unusual category of mixed-valence compounds in which the ligands themselves are the redox centers and interligand electronic communication is controlled by direct ligand orbital overlap rather than by superexchange through the metal ions. Despite nominally identical coordination-defined ligand positioning, the spectrally determined electronic strengths, H(ab)2, vary by roughly 100-fold. As shown by X-ray crystallography and computational modeling, the observed differences largely reflect detailed geometric configurational differences that can either facilitate or frustrate productive direct orbital overlap.
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Affiliation(s)
- Peter H Dinolfo
- Contribution from the Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
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40
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Dogan A, Sarkar B, Klein A, Lissner F, Schleid T, Fiedler J, Zális S, Jain VK, Kaim W. Complex Reduction Chemistry of (abpy)PtCl2, abpy = 2,2‘-Azobispyridine: Formation of Cyclic [(μ,η2:η1-abpy)PtCl]22+with a New Coordination Mode for abpy and a Near-Infrared Ligand-to-Ligand Intervalence Charge Transfer Absorption of the One-Electron Reduced State. Inorg Chem 2004; 43:5973-80. [PMID: 15360246 DOI: 10.1021/ic049941t] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The structurally characterized (abpy)PtCl2, abpy = 2,2'-azobispyridine, reveals a strong metal/ligand pi interaction as supported by DFT calculations. Unexpectedly, its chemical or electrochemical reduction occurs irreversibly to yield EPR-detectable [(micro,eta2:eta2-abpy)[PtCl2]2]*- and, as the main product of chloride dissociation, the structurally identified and DFT-calculated dinuclear [(micro,eta2:eta1-abpy)PtCl]2(2+) with a novel coordination mode for abpy and isolated as tetrachlorozincate. Stepwise reversible one-electron reduction of that dimer, separated by 0.24 V, exhibits an intense near-infrared band for the monocationic intermediate [(abpy(-I))(abpy)Pt2Cl2]*+ at 1220 nm (epsilon = 3370 M(-1) cm(-1)) which is attributed to a ligand-to-ligand intervalence charge-transfer transition.
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Affiliation(s)
- Akbey Dogan
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany
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41
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Yamamoto Y, Shiotsuka M, Onaka S. Luminescent rhenium(I)–gold(I) hetero organometallics linked by ethynylphenanthrolines. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.06.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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42
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Song Y, Koval IA, Gamez P, van Albada GA, Mutikainen I, Turpeinen U, Reedijk J. Solution studies and structure of a dinuclear-based double-stranded helicate of [Cu2(p-xysal)2] (H2-p-xysal=bis(hydroxylbenzyl)diaminoxylene). Polyhedron 2004. [DOI: 10.1016/j.poly.2004.04.011] [Citation(s) in RCA: 9] [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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43
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Han WS, Lee SW. Various forms of linear dipyridyls in discrete rectangles, dinuclear rods, and one-dimensional networks containing (eta5-pentamethylcyclopentadienyl)rhodium(III). Dalton Trans 2004:1656-63. [PMID: 15252617 DOI: 10.1039/b402201g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[Cp*Rh(eta1-NO3)(eta2-NO3)] (1) reacted with pyrazine (pyz) to give a dinuclear complex [Cp*Rh(eta1-NO3)(mu-pyz)(0.5)]2.CH2Cl2(3.CH2Cl2). Tetranuclear rectangles of the type [Cp*Rh(eta1,mu-X)(mu-L)(0.5)]4(OTf)4(4a: X = N3, L = bpy; 4b: X = N3, L = bpe; 4c: X = NCO, L = bpy) were prepared from [Cp*Rh(H2O)3](OTf)2 (2), a pseudo-halide (Me3SiN3 or Me3SiNCO), and a linear dipyridyl [4,4'-bipyridine (bpy) or trans-1,2-bis(4-pyridyl)ethylene (bpe)] by self-assembly through one-pot synthesis at room temperature. Treating complex with NH4SCN and dipyridyl led to the formation of dinuclear rods, [Cp*Rh(eta1-SCN)3]2(LH2) (5a: L = bpy; 5b: L = bpe), in which two Cp*Rh(eta1-SCN)3 units are connected by the diprotonated dipyridyl (LH2(2+)) through N(+)-H...N hydrogen bonds. Reactions of complex 2 with 1-(trimethylsilyl)imidazole (TMSIm) and dipyridyl (bpy or bpe) also produced another family of dinuclear rods [Cp*Rh(ImH)3]2.L (6a: L = bpy; 6b: L = bpe). Treating 1 and 2 with TMSIm and NH4SCN (in the absence of dipyridyl) generated a 1-D chain [Cp*Rh(ImH)3](NO3)2 (7) and a 1-D helix [Cp*Rh(eta1-SCN)2(eta1-SHCN)].H2O (8.H2O), respectively. The structures of complexes 3.CH2Cl2, 4a.H2O, 4c.2H2O, 5b, 6a, 7 and 8.H2O were determined by X-ray diffraction.
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Affiliation(s)
- Won Seok Han
- Department of Chemistry (BK21), Institute of Basic Science, Sungkyunkwan University, Natural Science Campus, Suwon 440-746, Korea
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44
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Rajendran T, Manimaran B, Liao RT, Lin RJ, Thanasekaran P, Lee GH, Peng SM, Liu YH, Chang IJ, Rajagopal S, Lu KL. Synthesis and Photophysical Properties of Neutral Luminescent Rhenium-Based Molecular Rectangles. Inorg Chem 2003; 42:6388-94. [PMID: 14514314 DOI: 10.1021/ic034099x] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of neutral luminescent molecular rectangles [[Re(CO)(3)(mu-bpy)Br][Re(CO)(3)(mu-L)Br]](2) (1-4) having fac-Re(CO)(3)Br as corners and 4,4'-bipyridine (bpy) as the bridging ligand on one side and other bipyridyl ligands of varying length (L) on the other side have been synthesized and characterized. The crystal structure of 1 shows a rectangular cavity with the dimensions of 11.44 x 7.21 A. When the cavity size is tuned from 1 to 4, a dimension of 11.4 x 20.8 A could be achieved, as revealed by the molecular modeling. These rectangles exhibit luminescence in solution at room temperature. In particular, compound 4 containing 1,4-bis(4'-pyridylethynyl)benzene (bpeb) as bridging ligand shows the excited-state lifetime of 495 ns. Fine-tuning of the cavity size of the rectangles improves their excited-state properties. These properties facilitate the study of excited-state electron-transfer reactions with electron acceptors and donors and host-guest binding. Crystallographic information: 1.6CH(3)COCH(3) is monoclinic, P2(1)/c, with a = 12.0890(2), b = 24.2982(2), and c = 12.8721(2) A, beta = 107.923(1) degrees, and Z = 2.
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Affiliation(s)
- T Rajendran
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
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45
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Dong G, Chun-qi Q, Chun-ying D, Ke-liang P, Qing-jin M. Synthesis and structural characterization of a novel mixed-valent Cu(II)Cu(I)Cu(II) triangular metallomacrocycle using an imine-based rigid ligand. Inorg Chem 2003; 42:2024-30. [PMID: 12639137 DOI: 10.1021/ic0260668] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel neutral mixed-valent Cu(I)Cu(II)(2) triangular metallomacrocycle [Cu(3)L(2)(HL)].3CH(3)OH.2H(2)O (1) was assembled by reaction of the tetradentate ligand bis(N-salicylidene-4,4'-diphenylamine), H(2)L, with a copper(II) salt. ESI-MS show peaks only corresponding to the triangular structural species, indicating the high stability of the trimer structure in solution. Magnetic study confirms that there are two Cu(II) ions and one Cu(I) ion in a discrete triangular molecule. The crystal structure of 1 reveals that the triangle is formed by three deprotonated ligands and three copper ions with a Cu-Cu separation of ca. 11.8 A. Each copper atom is coordinated by two oxygen atoms and two nitrogen atoms from two different bis-bidentate ligands in a heavily distorted tetrahedral geometry, while each ligand is bound to two metal ions in a bis-bidentate coordination mode and links the metal centers overlapping in an unprogressive manner. Strong intramolecular pi.pi interactions between the ligands are found to stabilize the constraint conformation of the triangle. Electrochemical study reveals that the mixed-valent Cu(I)Cu(II)(2) complex is the most stable state in solution condition, and the electrochemical communication between the copper ions might be explained on the basis of the through-bond interaction. UV-vis-NIR spectral measurement demonstrates the Robin-Day class II behavior of the mixed-valence compound with a weak copper-copper interaction.
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Affiliation(s)
- Guo Dong
- Coordination Chemistry Institute, The State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093, P. R. China
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46
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Kaim W, Schwederski B, Dogan A, Fiedler J, Kuehl CJ, Stang PJ. Metalla-supramolecular rectangles as electron reservoirs for multielectron reduction and oxidation. Inorg Chem 2002; 41:4025-8. [PMID: 12132929 DOI: 10.1021/ic020122n] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The electron-transfer capacity of molecular rectangle ions [Pt(II)(4)(PEt(3))(8)(mu-anth(2-))(2)(mu-L)(2)](4+) with anth = anthracene-1,8-diyl and L = 4,4'-bipyridine (bp) or 1,2-bis(4-pyridyl)ethene (bpe) was investigated in acetonitrile and dichloromethane using cyclic voltammetry, EPR, and UV-vis-near-IR spectroelectrochemistry. The compounds can be reversibly reduced, first in a two-electron process and then via two closely separated one-electron steps. Oxidation was also possible at rather low potentials in a reversible two-electron step, followed by an electrochemically irreversible process. The spectroscopic results indicate reduction at the neutral acceptor ligands L and oxidation at the formally dianionic anthracene "clips". In contrast, the prototypical molecular square ([Pt(triphos)(mu-bp)](4))(8+) undergoes only irreversible reduction.
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Affiliation(s)
- Wolfgang Kaim
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany.
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47
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Michon C, Djukic JP, Ratkovic Z, Collin JP, Pfeffer M, de Cian A, Fischer J, Heiser D, Dötz KH, Nieger M. Polynuclear Organometallic Helices by Means of Novel Coupling Reactions of Cyclomanganated Complexes with Aryl-Substituted Diazoalkanes: Syntheses of New Manganospiralenes and Appended (η5-fluoren-9-yl)M(CO)3 Complexes (M = Mn, Re). Organometallics 2002. [DOI: 10.1021/om020116z] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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48
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Hartmann H, Kaim W, Hartenbach I, Schleid T, Wanner M, Fiedler J. A Fully Characterized Complex Ion with Unreduced TCNQ as Fourfold Bridging Ligand: [(μ4-TCNQ){fac-Re(CO)3(bpy)}4]4+. Angew Chem Int Ed Engl 2001; 40:2842-2844. [DOI: 10.1002/1521-3773(20010803)40:15<2842::aid-anie2842>3.0.co;2-r] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2001] [Indexed: 11/12/2022]
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49
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Hartmann H, Kaim W, Hartenbach I, Schleid T, Wanner M, Fiedler J. Ein vollständig charakterisiertes Komplexion mit nichtreduziertem TCNQ als vierfach verbrückendem Liganden: [(
μ
4
‐TCNQ){
fac
‐Re(CO)
3
(bpy)}
4
]
4+ . Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3757(20010803)113:15<2927::aid-ange2927>3.0.co;2-#] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Heiko Hartmann
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55, 70550 Stuttgart (Deutschland) Fax: +49‐711‐685‐4165
| | - Wolfgang Kaim
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55, 70550 Stuttgart (Deutschland) Fax: +49‐711‐685‐4165
| | - Ingo Hartenbach
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55, 70550 Stuttgart (Deutschland) Fax: +49‐711‐685‐4165
| | - Thomas Schleid
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55, 70550 Stuttgart (Deutschland) Fax: +49‐711‐685‐4165
| | - Matthias Wanner
- Institut für Anorganische Chemie Universität Stuttgart Pfaffenwaldring 55, 70550 Stuttgart (Deutschland) Fax: +49‐711‐685‐4165
| | - Jan Fiedler
- J. Heyrovsky Institute of Physical Chemistry Academy of Sciences of the Czech Republic Dolejškova 3, 18223 Prag (Tschechien)
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50
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Sun SS, Lees AJ. Self-assembly organometallic squares with terpyridyl metal complexes as bridging ligands. Inorg Chem 2001; 40:3154-60. [PMID: 11399187 DOI: 10.1021/ic0101681] [Citation(s) in RCA: 115] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of novel heterometallic square complexes with the general molecular formulas [fac-Br(CO)(3)Re[mu-(pyterpy)(2)M]](4)(PF(6))(8) and [(dppf)Pd[mu-(pyterpy)(2)Ru]](4)(PF(6))(8)(OTf(8) (4), where M = Fe (1), Ru (2), or Os (3), pyterpy is 4'-(4' "-pyridyl)-2,2':6',2' '-terpyridine, dppf = 1,1'-bis(diphenylphosphino)ferrocene and OTf is trifluoromethanesulfonate, were prepared by self-assembly between BrRe(CO)(5) or (dppf)Pd(H(2)O)(2)(OTf)(2) and (pyterpy)(2)M(PF(6))(2). The obtained NMR spectra, IR spectra, electrospray ionization mass spectra, and elemental analyses are all consistent with the proposed square structures incorporating terpyridyl metal complexes as bridging ligands. Multiple redox processes were observed in all square complexes. All four complexes display strong visible absorptions in the region 400-600 nm, which are assigned as metal (Fe, Ru, or Os)-to-ligand (pyterpy) charge transfer (MLCT) bands. Square 3 exhibits an additional weak band at 676 nm, which is assigned to an Os-based (3)MLCT band. For each complex, the bands centered between 279 and 377 nm are assigned as pyterpy-based pi-pi bands and the Re-based MLCT band. Square 3 is luminescent in room-temperature solution, while squares 1, 2, and 4 do not have any detectable luminescence under identical experimental conditions.
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Affiliation(s)
- S S Sun
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY 13902-6016, USA
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