1
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Ferrer M, Gallen A, Gutiérrez A, Martínez M, Ruiz E, Lorenz Y, Engeser M. Self‐Assembled, Highly Positively Charged, Allyl–Pd Crowns: Cavity‐Pocket‐Driven Interactions of Fluoroanions. Chemistry 2020; 26:7847-7860. [DOI: 10.1002/chem.202000316] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Indexed: 11/08/2022]
Affiliation(s)
- Montserrat Ferrer
- Departament de Química Inorgànica i OrgànicaSecció de Química InorgànicaUniversitat de Barcelona c/ Martí i Franquès 1-1 08028 Barcelona Spain
| | - Albert Gallen
- Departament de Química Inorgànica i OrgànicaSecció de Química InorgànicaUniversitat de Barcelona c/ Martí i Franquès 1-1 08028 Barcelona Spain
| | - Albert Gutiérrez
- Departament de Química Inorgànica i OrgànicaSecció de Química InorgànicaUniversitat de Barcelona c/ Martí i Franquès 1-1 08028 Barcelona Spain
| | - Manuel Martínez
- Departament de Química Inorgànica i OrgànicaSecció de Química InorgànicaUniversitat de Barcelona c/ Martí i Franquès 1-1 08028 Barcelona Spain
| | - Eliseo Ruiz
- Departament de Química Inorgànica i OrgànicaSecció de Química InorgànicaUniversitat de Barcelona c/ Martí i Franquès 1-1 08028 Barcelona Spain
- Institut de Química Teòrica i ComputacionalUniversitat de Barcelona c/ Martí i Franquès 1-11 08028 Barcelona Spain
| | - Yvonne Lorenz
- Kekulé-Institute for Organic Chemistry and BiochemistryUniversity of Bonn Gerhard-Domagk-Str. 1 53121 Bonn Germany
| | - Marianne Engeser
- Kekulé-Institute for Organic Chemistry and BiochemistryUniversity of Bonn Gerhard-Domagk-Str. 1 53121 Bonn Germany
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2
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Affiliation(s)
- Daisuke Shimoyama
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Ryo Sekiya
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Hiroto Kudo
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan
| | - Takeharu Haino
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
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3
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Han X, Yang J, Liu YY, Xu GH, Ma JF. Metal ion induced single-crystal-to-single-crystal transformation and luminescent sensing properties of resorcin[4]arene-based metal–organic frameworks. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.12.051] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4
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Brancatelli G, Dalcanale E, Pinalli R, Geremia S. Probing the Structural Determinants of Amino Acid Recognition: X-Ray Studies of Crystalline Ditopic Host-Guest Complexes of the Positively Charged Amino Acids, Arg, Lys, and His with a Cavitand Molecule. Molecules 2018; 23:molecules23123368. [PMID: 30572602 PMCID: PMC6321202 DOI: 10.3390/molecules23123368] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/13/2018] [Accepted: 12/18/2018] [Indexed: 11/16/2022] Open
Abstract
Crystallization of tetraphosphonate cavitand Tiiii[H, CH3, CH3] in the presence of positively charged amino acids, namely arginine, lysine, or histidine, afforded host-guest complex structures. The X-ray structure determination revealed that in all three structures, the fully protonated form of the amino acid is ditopically complexed by two tetraphosphonate cavitand molecules. Guanidinium, ammonium, and imidazolium cationic groups of the amino acid side chain are hosted in the cavity of a phosphonate receptor, and are held in place by specific hydrogen bonding interactions with the P=O groups of the cavitand molecule. In all three structures, the positively charged α-ammonium groups form H-bonds with the P=O groups, and with a water molecule hosted in the cavity of a second tetraphosphonate molecule. Furthermore, water-assisted dimerization was observed for the cavitand/histidine ditopic complex. In this 4:2 supramolecular complex, a bridged water molecule is held by two carboxylic acid groups of the dimerized amino acid. The structural information obtained on the geometrical constrains necessary for the possible encapsulation of the amino acids are important for the rational design of devices for analytical and medical applications.
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Affiliation(s)
- Giovanna Brancatelli
- Centre of Excellence in Biocrystallography, Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy.
| | - Enrico Dalcanale
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, and INSTM, UdR Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Roberta Pinalli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, and INSTM, UdR Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
| | - Silvano Geremia
- Centre of Excellence in Biocrystallography, Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy.
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5
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Arumugam K, Selvachandran M, Obanda A, Shaw MC, Chandrasekaran P, Caston Good SL, Mague JT, Sproules S, Donahue JP. Redox-Active Metallodithiolene Groups Separated by Insulating Tetraphosphinobenzene Spacers. Inorg Chem 2018. [PMID: 29533607 DOI: 10.1021/acs.inorgchem.8b00201] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Compounds of the type [(S2C2R2)M(μ-tpbz)M(S2C2R2)] (R = CN, Me, Ph, p-anisyl; M = Ni, Pd, Pt; tpbz = 1,2,4,5-tetrakis(diphenylphosphino)benzene) have been prepared by transmetalation with [(S2C2R2)SnR'2] reagents, by direct displacement of dithiolene ligand from [M(S2C2R2)2] with 0.5 equiv of tpbz, or by salt metathesis using Na2[S2C2(CN)2] in conjunction with X2M(μ-tpbz)MX2 (X = halide). X-ray crystallography reveals a range of topologies (undulating, chair, bowed) for the (S2C2)M(P2C6P2)M(S2C2) core. The [(S2C2R2)M(μ-tpbz)M(S2C2R2)] (R = Me, Ph, p-anisyl) compounds support reversible or quasireversible oxidations corresponding to concurrent oxidation of the dithiolene terminal ligands from ene-1,2-dithiolates to radical monoanions, forming [(-S•SC2R2)M(μ-tpbz)M(-S•SC2R2)]2+. The R = Ph and p-anisyl compounds support a second, reversible oxidation of the dithiolene ligands to their α-dithione form. In contrast, [(S2C2(CN)2)Ni(tpbz)Ni(S2C2(CN)2)] sustains only reversible, metal-centered reductions. Spectroscopic examination of [(-S•SC2( p-anisyl)2)Ni(μ-tpbz)Ni(-S•SC2( p-anisyl)2)]2+ by EPR reveals a near degenerate singlet-triplet ground state, with spectral simulation revealing a remarkably small dipolar coupling constant of 18 × 10-4 cm-1 that is representative of an interspin distance of 11.3 Å. This weak interaction is mediated by the rigid tpbz ligand, whose capacity to electronically insulate is an essential quality in the development of molecular-based spintronic devices.
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Affiliation(s)
- Kuppuswamy Arumugam
- Department of Chemistry , Wright State University , 3640 Colonel Glenn Highway , Dayton , Ohio 45435-0001 , United States
| | - Malathy Selvachandran
- Department of Chemistry , Tulane University , 6400 Freret Street , New Orleans , Louisiana 70118-5698 , United States
| | - Antony Obanda
- Department of Chemistry , Tulane University , 6400 Freret Street , New Orleans , Louisiana 70118-5698 , United States
| | - Mohamed C Shaw
- Department of Chemistry , Tulane University , 6400 Freret Street , New Orleans , Louisiana 70118-5698 , United States
| | | | - Sonya L Caston Good
- Department of Chemistry , Texas Southern University , 1300 Cleburne Street , Houston , Texas 77004 , United States
| | - Joel T Mague
- Department of Chemistry , Tulane University , 6400 Freret Street , New Orleans , Louisiana 70118-5698 , United States
| | - Stephen Sproules
- WestCHEM, School of Chemistry , University of Glasgow , Glasgow G12 8QQ , United Kingdom
| | - James P Donahue
- Department of Chemistry , Tulane University , 6400 Freret Street , New Orleans , Louisiana 70118-5698 , United States
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6
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Sgarlata C, Brancatelli G, Fortuna CG, Sciotto D, Geremia S, Bonaccorso C. Three-Dimensional Network Structures Based on Pyridyl-Calix[4]Arene Metal Complexes. Chempluschem 2017; 82:1341-1350. [PMID: 31957183 DOI: 10.1002/cplu.201700400] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 11/07/2017] [Indexed: 01/01/2023]
Abstract
A new series of supramolecular assemblies is obtained through the interaction of 3-pyridylmethyl-calixarenes and copper or zinc ions. The complexes formed are characterized both in solution and in the solid state. The results offer appealing insights into how the steric crowding of the lower rim and different coordination modes of the metal centers have a great impact on the overall architecture of the complexes with the formation of monomeric, dimeric, or oligomeric/polymeric species.
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Affiliation(s)
- Carmelo Sgarlata
- Dipartimento di Scienze Chimiche, Università di Catania, viale A. Doria 6, 95125, Catania, Italy
| | - Giovanna Brancatelli
- Centro di Eccellenza in Biocristallografia, Dipartimento di Scienze Chimiche e Farmaceutiche, Università di Trieste, via L. Giorgieri 1, 34127, Trieste, Italy
| | - Cosimo G Fortuna
- Dipartimento di Scienze Chimiche, Università di Catania, viale A. Doria 6, 95125, Catania, Italy
| | - Domenico Sciotto
- Dipartimento di Scienze Chimiche, Università di Catania, viale A. Doria 6, 95125, Catania, Italy
| | - Silvano Geremia
- Centro di Eccellenza in Biocristallografia, Dipartimento di Scienze Chimiche e Farmaceutiche, Università di Trieste, via L. Giorgieri 1, 34127, Trieste, Italy
| | - Carmela Bonaccorso
- Dipartimento di Scienze Chimiche, Università di Catania, viale A. Doria 6, 95125, Catania, Italy
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7
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Thorp-Greenwood FL, Pritchard VE, Coogan MP, Hardie MJ. Tris(rhenium fac-tricarbonyl) Polypyridine Functionalized Cyclotriguaiacylene Ligands with Rich and Varied Emission. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00099] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Victoria E. Pritchard
- School
of Chemistry, University of Leeds, Leeds, West Yorkshire LS2 9JT, United Kingdom
| | - Michael P. Coogan
- Department
of Chemistry, Lancaster University, Bailrigg, Lancaster LA1
4YB, United Kingdom
| | - Michaele J. Hardie
- School
of Chemistry, University of Leeds, Leeds, West Yorkshire LS2 9JT, United Kingdom
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8
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Pinalli R, Dalcanale E, Ugozzoli F, Massera C. Resorcinarene-based cavitands as building blocks for crystal engineering. CrystEngComm 2016. [DOI: 10.1039/c6ce01010e] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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9
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Kaloudi-Chantzea A, Martinou E, Seintis K, Karakostas N, Giastas P, Pitterl F, Oberacher H, Fakis M, Pistolis G. Formation of a highly-ordered rigid multichromophoric 3D supramolecular network by combining ionic and coordination-driven self-assembly. Chem Commun (Camb) 2016; 52:3388-91. [DOI: 10.1039/c5cc10335e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A highly-ordered supramolecular network for energy transfer and polarization switching.
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Affiliation(s)
| | - Elisabeth Martinou
- NCSR “Demokritos” Institute of Nanoscience and Nanotechnology
- 153 10 Athens
- Greece
| | - Kostas Seintis
- Department of Physics
- University of Patras
- 26500 Patras
- Greece
| | - Nikolaos Karakostas
- NCSR “Demokritos” Institute of Nanoscience and Nanotechnology
- 153 10 Athens
- Greece
| | | | - Florian Pitterl
- Inst. of Legal Medicine and Core Facility Metabolomics
- Medical Univ. of Innsbruck
- 6020 Innsbruck
- Austria
| | - Herbert Oberacher
- Inst. of Legal Medicine and Core Facility Metabolomics
- Medical Univ. of Innsbruck
- 6020 Innsbruck
- Austria
| | - Mihalis Fakis
- Department of Physics
- University of Patras
- 26500 Patras
- Greece
| | - George Pistolis
- NCSR “Demokritos” Institute of Nanoscience and Nanotechnology
- 153 10 Athens
- Greece
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10
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Kanaura M, Ito K, Schramm MP, Ajami D, Iwasawa T. Cavitands with inwardly and outwardly directed functional groups. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.06.072] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Henkelis JJ, Hardie MJ. Controlling the assembly of cyclotriveratrylene-derived coordination cages. Chem Commun (Camb) 2015; 51:11929-43. [DOI: 10.1039/c5cc03071d] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Ligand-functionalised cyclotriveratrylene derivatives self-assemble to afford coordination cages and topologically non-trivial constructs, including controlled assembly of M3L2 metallo-cryptophane and M6L8 cages.
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12
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Momose H, Suzuki H, Kimura M. Supramolecular complex formation of resorcin[4]arene-modified zinc phthalocyanine and fullerene. J PORPHYR PHTHALOCYA 2014. [DOI: 10.1142/s1088424614500618] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A resorcin[4]arene-strapped zinc phthalocyanine 1, in which two benzene rings of the upper rim of resorcin[4]arene were fused to the adjacent phthalocyanine ligand, was synthesized from two phthalonitriles. Introducing resorcin[4]arene on one side of zinc phthalocyanine strongly affects the spectroscopic property of the phthalocyanine. The Q-band of 1 in CH 2 Cl 2 is split into 694 and 740 nm due to the self-protonation of 1 on the meso-nitrogen of phthalocyanine ligand. Bowl-shaped resorcin[4]arene can capture C 60 through the non-covalent interactions, and the complexation between 1 and C 60 results in an efficient photo-induced electron transfer.
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Affiliation(s)
- Hitomi Momose
- Division of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567, Japan
| | - Hiroyuki Suzuki
- Division of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567, Japan
| | - Mutsumi Kimura
- Division of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567, Japan
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13
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Zhang H, Jiang W, Yang J, Liu YY, Song S, Ma JF. Four coordination polymers constructed by a novel octacarboxylate functionalized calix[4]arene ligand: syntheses, structures, and photoluminescence property. CrystEngComm 2014. [DOI: 10.1039/c4ce01581a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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14
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Jiang W, Zhang H, Yang J, Liu YY, Liu HY, Ma JF. Three resorcin[4]arene-based complexes with Cu(ii)-exchange characteristics and fluorescence sensing of polyoxometalates in aqueous solutions. CrystEngComm 2014. [DOI: 10.1039/c4ce01376j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Henkelis JJ, Fisher J, Warriner SL, Hardie MJ. Solvent-Dependent Self-Assembly Behaviour and Speciation Control of Pd6L8Metallo-supramolecular Cages. Chemistry 2014; 20:4117-25. [DOI: 10.1002/chem.201304437] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Indexed: 11/11/2022]
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16
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Adhikary A, Sheikh JA, Konar AD, Konar S. Synthesis, crystal structure, magnetic study and magneto-structural correlation of three Cu(ii) complexes formed via pyridine bis(hydrazone) based ligand. RSC Adv 2014. [DOI: 10.1039/c3ra45928d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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17
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Degardin M, Busseron E, Kim DA, Ajami D, Rebek J. Deep cavitands featuring functional acetal-based walls. Chem Commun (Camb) 2012; 48:11850-2. [DOI: 10.1039/c2cc36517k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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López C, Moya C, Basu PK, González A, Solans X, Font-Bardía M, Calvet T, Lalinde E, Teresa Moreno M. Synthesis, crystal structures and properties of cis- and trans-isomers of [Pt{C6H4-4R1-1-[C8H4N-3′-NOMe]}Cl2(dmso)] (R1=H or Cl). J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.05.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Busi M, Cantadori B, Boccini F, De Zorzi R, Geremia S, Dalcanale E. Molecular Recognition with Ditopic Cavitand Re Complexes. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001668] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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20
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Borisova NE, Askerov RKO, Maharramov AM, Khrustalev VN, Reshetova MD, Ustunyuk YA. Self-assembly of a palladium complex formed from two U-shaped calixsalen molecules. Dalton Trans 2010; 39:5768-71. [DOI: 10.1039/c002813d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Abstract
Supramolecular chemistry has expanded dramatically in recent years both in terms of potential applications and in its relevance to analogous biological systems. The formation and function of supramolecular complexes occur through a multiplicity of often difficult to differentiate noncovalent forces. The aim of this Review is to describe the crucial interaction mechanisms in context, and thus classify the entire subject. In most cases, organic host-guest complexes have been selected as examples, but biologically relevant problems are also considered. An understanding and quantification of intermolecular interactions is of importance both for the rational planning of new supramolecular systems, including intelligent materials, as well as for developing new biologically active agents.
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Affiliation(s)
- Hans-Jörg Schneider
- Organische Chemie, Universität des Saarlandes, 66041 Saarbrücken, Deutschland.
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23
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Nishio M, Umezawa Y, Honda K, Tsuboyama S, Suezawa H. CH/π hydrogen bonds in organic and organometallic chemistry. CrystEngComm 2009. [DOI: 10.1039/b902318f] [Citation(s) in RCA: 481] [Impact Index Per Article: 32.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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24
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Jude H, Sinclair DJ, Das N, Sherburn MS, Stang PJ. Self-assembly of supramolecular platinum complexes with bis-4-pyridyl cavitands. J Org Chem 2007; 71:4155-63. [PMID: 16709055 DOI: 10.1021/jo060133o] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The design and self-assembly of six new supramolecular complexes (four triangles and two 2+2 assemblies) are described. These assemblies incorporate two new bispyridyl cavitand building blocks and were prepared in excellent yields (85-95%). The assemblies and building blocks were characterized with multinuclear NMR spectroscopy, electrospray ionization mass spectrometry, and elemental analysis. Isotopically resolved mass spectrometry along with NMR data confirms the existence of the six assemblies.
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Affiliation(s)
- Hershel Jude
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, USA
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25
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Matsumoto Z, Aridomi T, Igashira-Kamiyama A, Kawamoto T, Konno T. Proton-Induced Cis−Trans Conversion of a Platinum(II) Center Coordinated by l-Cysteinatocobalt(III) Metalloligands. Inorg Chem 2007; 46:2968-70. [PMID: 17355131 DOI: 10.1021/ic070265f] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Treatment of LambdaL-[Co(L-cys-N,S)(en)2]+ (l-H2cys = L-cysteine) with [PtCl4]2- in water, followed by the addition of acid, gave an S-bridged CoIII2PtII trinuclear complex ([1]4+), which was reversibly converted to its deprotonated complex ([2]2+) in an aqueous solution. While [1]4+ formed only a trans isomer, [2]2+ existed as a mixture of trans and cis isomers. The selective formation of a cis isomer was achieved by treatment of [1]4+ or [2]2+ with phthalic acid in water, which afforded a unique CoIII4PtII2 hexanuclear complex ([3]4+). Complex [3]4+ was reverted back to [1]4+ by treatment with aqueous HCl, accompanied by the complete cis-to-trans conversion.
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Affiliation(s)
- Zentaro Matsumoto
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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26
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Gómez L, Company A, Fontrodona X, Ribas X, Costas M. Self-assembling of nanoscopic molecular rectangles, extended helicates and porous-like materials based on macrocyclic dicopper building blocks under fine supramolecular control. Chem Commun (Camb) 2007:4410-2. [DOI: 10.1039/b707508a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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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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28
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Company A, Gómez L, López Valbuena JM, Mas-Ballesté R, Benet-Buchholz J, Llobet A, Costas M. Isomeric Molecular Rectangles Resulting from Self-Assembly of Dicopper Complexes of Macrocyclic Ligands. Inorg Chem 2006; 45:2501-8. [PMID: 16529471 DOI: 10.1021/ic051759k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Dinuclear copper complexes containing hexaazacyclophane macrocyclic ligands react with the disodium salt of terephthalic acid resulting in the self-assembly of rectangular molecules with the general formula [(Cu2L)2(p-(O2CC6H4CO2)2)]X4, where X = CF3SO3 and ClO4 (3X4, L = Me2p and 4X4, L = Me2m). Tetranuclear complexes 3(CF3SO3)4 (as polymorphs 3a and 3b) and 4(ClO4)4 have been characterized by single-crystal X-ray diffraction analysis providing definitive proof of their structure as well as their metrical parameters. 3a contains, in its unit cell, two isomeric cationic units (3asyn and 3aanti) that differ in the relative position of the two O carboxylate atoms which bind to the Cu atoms of the different macrocyclic complexes, leading to boxes with different metrical parameters. ESI-MS analyses of solutions of the tetranuclear complexes 3(CF3SO3)4 and 4(CF3SO3)4 exhibit cluster ions which match the solid state formulation, thus demonstrating that the cages are retained in solution.
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Affiliation(s)
- Anna Company
- Departament de Química, Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain
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Kang SW, Castro PP, Zhao G, Nuñez JE, Godinez CE, Gutierrez-Tunstad LM. Hinged Molecular Capsules: Synthesis and Conformational Control via Temperature, pH, or Solvent Composition. J Org Chem 2006; 71:1240-3. [PMID: 16438545 DOI: 10.1021/jo0521807] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Three new covalently linked molecular capsules were synthesized from their resorcinarene cavitand precursors in good yields. The capsules undergo reversible conformational switching between the closed "vase" form and the open "kite" form upon temperature or pH variation. The kite conformation obtained via either method in CDCl(3) switches to vase conformation upon addition of polar solvents such as acetone-d(6) or THF-d(8).
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Affiliation(s)
- Sang-Woo Kang
- Department of Chemistry and Biochemistry, California State University, Los Angeles, 5151 State University Drive, Los Angeles, CA 90032, USA
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Menozzi E, Rebek J. Metal directed assembly of ditopic containers and their complexes with alkylammonium salts. Chem Commun (Camb) 2005:5530-2. [PMID: 16358052 DOI: 10.1039/b509189f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new self-folding cavitand has been assembled through metal coordination to give a thermodynamically stable ditopic receptor of nanosize dimensions which has been used in the reversible binding of di-alkylammonium and n-alkylammonium salts.
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Affiliation(s)
- Edoardo Menozzi
- Skaggs Institute for Chemical Biology and Department of Chemistry, Scripps Research Institute, MB-26, La Jolla, California 92037, USA
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