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Ling I, Cambell C, Sobolev AN, Dalgarno S. Hierarchical study of mono- and multicharged imidazolium encapsulation in p-sulfonatocalix[4]arene molecular capsules. CrystEngComm 2022. [DOI: 10.1039/d2ce00459c] [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
Four ternary multi-component crystal structures comprising water-soluble p-sulfonatocalix[4]arene anion as the cavitand in the presence of different types of positively charged guest molecules comprising 1-butylimidazolium, 3,3'-(1,4-phenylenebis(methylene))bis(1-methylimidazolium), 3,3',3''-(benzene-1,3,5-triyltris(methylene))tris(1-methylimidazolium), or 3,3',3'',3'''-(benzene-1,2,4,5-tetrayltetrakis(methylene))tetrakis(1-methylimidazolium) and...
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Preston D, Kruger PE. Using Complementary Ligand Denticity to Direct Metallosupramolecular Structure about Metal Ions with Square‐Planar Geometry. Chempluschem 2020; 85:454-465. [DOI: 10.1002/cplu.202000019] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/05/2020] [Indexed: 01/30/2023]
Affiliation(s)
- Dan Preston
- MacDiarmid Institute for Advanced Materials and Nanotechnology School of Physical and Chemical SciencesUniversity of Canterbury Christchurch 8041 New Zealand
| | - Paul E. Kruger
- MacDiarmid Institute for Advanced Materials and Nanotechnology School of Physical and Chemical SciencesUniversity of Canterbury Christchurch 8041 New Zealand
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Rathnayake AS, Fraser HWL, Brechin EK, Dalgarno SJ, Baumeister JE, White J, Rungthanaphatsophon P, Walensky JR, Kelley SP, Barnes CL, Atwood JL. Site-Specific Metal Chelation Facilitates the Unveiling of Hidden Coordination Sites in an FeII/FeIII-Seamed Pyrogallol[4]arene Nanocapsule. J Am Chem Soc 2018; 140:15611-15615. [DOI: 10.1021/jacs.8b10186] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Asanka S. Rathnayake
- Department of Chemistry, University of Missouri, 601, S. College Avenue, Columbia, Missouri 65211, United States
| | - Hector W. L. Fraser
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Euan K. Brechin
- EaStCHEM School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Scott J. Dalgarno
- Institute of Chemical Sciences, Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, United Kingdom
| | - Jakob E. Baumeister
- Department of Chemistry, University of Missouri, 601, S. College Avenue, Columbia, Missouri 65211, United States
| | - Joshua White
- Department of Chemistry, University of Missouri, 601, S. College Avenue, Columbia, Missouri 65211, United States
| | - Pokpong Rungthanaphatsophon
- Department of Chemistry, University of Missouri, 601, S. College Avenue, Columbia, Missouri 65211, United States
| | - Justin R. Walensky
- Department of Chemistry, University of Missouri, 601, S. College Avenue, Columbia, Missouri 65211, United States
| | - Steven P. Kelley
- Department of Chemistry, University of Missouri, 601, S. College Avenue, Columbia, Missouri 65211, United States
| | - Charles L. Barnes
- Department of Chemistry, University of Missouri, 601, S. College Avenue, Columbia, Missouri 65211, United States
| | - Jerry L. Atwood
- Department of Chemistry, University of Missouri, 601, S. College Avenue, Columbia, Missouri 65211, United States
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Sonia AS, Bhaskaran R. Tris dithiocarbamate of Co(III) complexes: Synthesis, characterization, thermal decomposition studies and experimental and theoretical studies on their crystal structures. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.12.097] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tamaki K, Ishigami A, Tanaka Y, Yamanaka M, Kobayashi K. Self-Assembled Boronic Ester Cavitand Capsules with Various Bis(catechol) Linkers: Cavity-Expanded and Chiral Capsules. Chemistry 2015; 21:13714-22. [DOI: 10.1002/chem.201501717] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Indexed: 12/18/2022]
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Nito Y, Nakada K, Kobayashi K, Yamanaka M. Synthesis of a C2-Symmetrical Tetrakis(arylethynyl) Cavitand and Formation of Hybrid Hydrogen-Bonded/Metal-Ligand Coordination Supramolecular Capsules. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201402041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Nito Y, Adachi H, Toyoda N, Takaya H, Kobayashi K, Yamanaka M. Hydrogen-Bond and Metal-Ligand Coordination Bond Hybrid Supramolecular Capsules: Identification of Hemicapsular Intermediate and Dual Control of Guest Exchange Dynamics. Chem Asian J 2014; 9:1076-82. [DOI: 10.1002/asia.201301628] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Revised: 01/06/2014] [Indexed: 11/06/2022]
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Kishi N, Li Z, Sei Y, Akita M, Yoza K, Siegel JS, Yoshizawa M. Wide-Ranging Host Capability of a PdII-Linked M2L4Molecular Capsule with an Anthracene Shell. Chemistry 2013; 19:6313-20. [DOI: 10.1002/chem.201204010] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Revised: 02/06/2013] [Indexed: 11/07/2022]
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Yamanaka M, Kobayashi K. Capsular Assemblies of Calix[4]resorcinarene-based Cavitands. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201200175] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kline KK, Fowler DA, Tucker SA, Atwood JL. Encapsulation of Acenaphthene within C-Propan-3-ol-pyrogallol[4]arene Dimeric Nanocapsules. Chemistry 2011; 17:10848-51. [DOI: 10.1002/chem.201101297] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Lin Z, Emge TJ, Warmuth R. Multicomponent assembly of cavitand-based polyacylhydrazone nanocapsules. Chemistry 2011; 17:9395-405. [PMID: 21735498 DOI: 10.1002/chem.201100527] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Indexed: 01/09/2023]
Abstract
The thermodynamically controlled syntheses of different di-, tetra-, and hexacavitand polyacylhydrazone nanocapsules are reported. [2+4]-, [4+8]-, and [6+12]-nanocapsules assemble upon reacting a tetraformyl cavitand with two equivalents of isophthalic dihydrazide, or terephthalic dihydrazide in the presence of trifluoroacetic acid, whereby the building blocks are linked together through 8, 16, or 24 newly formed acylhydrazone bonds. Futhermore, the reaction of the tetraformylcavitands with different trigonal planar trihydrazides, simultaneously leads to the formation of [2+4]- and [6+8]-nanocapsules in varying ratios that depend on the cavitand to trihydrazide ratio and the nature of the cavitand and trihydrazide building blocks. The product ratios are rationalized with the different conformational strain of the acylhydrazone linkages in these nanocapsules. Diffusion NMR experiments with the hexacavitand polyacylhydrazone nanocapsules yield solvodynamic radii that range from 1.6 to 2.5 nm, consistent with estimates from force field calculations, and support, that these capsules have solvent filled, spherical interiors, the sizes of which approaches those of smaller proteins.
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Affiliation(s)
- Zhihua Lin
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, NJ 08854, USA
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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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15
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Li X, Li Y, Yang WP, Chen YY, Gong SL. Different metal-ion-induced dimeric self-assembling cavities based on thiacalix[4]benzocrown-4 isomers. Dalton Trans 2011; 40:367-76. [PMID: 21107462 DOI: 10.1039/c0dt00543f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
To construct the self-assembly of metal-ion-induced well-ordered architectures based on calixcrowns, isomeric thiacalix[4]benzocrowns-4 1 and 2 with rigid and small crown units were employed as the new scaffolds. They all show remarkable selectivity for Ag(+) and their complexation ability towards Ag(+) results in two novel dimeric aggregates of calixcrowns, which were first evidenced by ESI-MS, (1)H and DOSY-NMR spectra. Ultimately, X-ray diffraction experiments confirmed unambiguously the existence of the two metal-ion-induced dimers in lower rim/lower rim mode, and showed that dimerization of calixcrown 1 or 2 in the presence of Ag(+) could form dimeric supramolecular cavity with a small inner room. Moreover, the positional isomerism of their crown units (o-benzocrown unit for ligand 1 and m-benzocrown unit for 2) led to a dramatic change in the configuration of the two dimeric cavities 1·Ag(+) and 2·Ag(+). For dimeric cavity 1·Ag(+), two silver centers seamed two thiacalix[4]crown molecules together and resided at the edge of the dimeric self-assembling cavity; for dimeric cavity 2·Ag(+), one Ag(+) stitched two thiacalixcrowns together and was encapsulated in the center of the self-assembling cavity, while the other Ag(+) is tied down to one end of the dimer. Consequently, as a result of the different construction of dimeric cavities 1·Ag(+) and 2·Ag(+) the extended structures of the complexes are also different. The neighbour self-assembling cavities 1·Ag(+) are mutually oriented side-by-side and form a 1-D rectilineal polymeric chain. While, the neighbour self-assembling cavities 2·Ag(+) arrange themselves in a typical head-to-tail fashion to form a zig-zag polymeric chain.
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Affiliation(s)
- Xiong Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, PR China
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Zhu S, Staats H, Brandhorst K, Grunenberg J, Gruppi F, Dalcanale E, Lützen A, Rissanen K, Schalley C. Anion Binding to Resorcinarene-Based Cavitands: The Importance of CH⋅⋅⋅Anion Interactions. Angew Chem Int Ed Engl 2008; 47:788-92. [DOI: 10.1002/anie.200703451] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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Zhu S, Staats H, Brandhorst K, Grunenberg J, Gruppi F, Dalcanale E, Lützen A, Rissanen K, Schalley C. Anionen bindende Resorcinaren-Cavitanden: die Bedeutung von CH⋅⋅⋅Anion-Wechselwirkungen. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200703451] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Burlov AS, Koshchienko YV, Lyssenko KA, Vasilchenko IS, Alexeev YE, Borodkina IG, Antipin MY, Garnovskii AD. Self-assembling tetranuclear complexes of a tridentate Schiff base. J COORD CHEM 2007. [DOI: 10.1080/00958970701732220] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Anatolii S. Burlov
- a Institute of Physical and Organic Chemistry of Southern Federal University , Stachki av., 194/2, 344090 Rostov-on-Don, Russian Federtation
| | - Yurii V. Koshchienko
- a Institute of Physical and Organic Chemistry of Southern Federal University , Stachki av., 194/2, 344090 Rostov-on-Don, Russian Federtation
| | - Konstantin A. Lyssenko
- b N.A. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , Vavilova str., 28, 119991, Moscow, Russian Federation
| | - Igor S. Vasilchenko
- a Institute of Physical and Organic Chemistry of Southern Federal University , Stachki av., 194/2, 344090 Rostov-on-Don, Russian Federtation
| | - Yurii E. Alexeev
- a Institute of Physical and Organic Chemistry of Southern Federal University , Stachki av., 194/2, 344090 Rostov-on-Don, Russian Federtation
| | - Inna G. Borodkina
- a Institute of Physical and Organic Chemistry of Southern Federal University , Stachki av., 194/2, 344090 Rostov-on-Don, Russian Federtation
| | - Mikhail Yu. Antipin
- b N.A. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , Vavilova str., 28, 119991, Moscow, Russian Federation
| | - Alexander D. Garnovskii
- a Institute of Physical and Organic Chemistry of Southern Federal University , Stachki av., 194/2, 344090 Rostov-on-Don, Russian Federtation
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Ronson T, Fisher J, Harding L, Hardie M. Star-Burst Prisms with Cyclotriveratrylene-Type Ligands: A [Pd6L8]12+ Stella Octangular Structure. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200703903] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ronson T, Fisher J, Harding L, Hardie M. Star-Burst Prisms with Cyclotriveratrylene-Type Ligands: A [Pd6L8]12+ Stella Octangular Structure. Angew Chem Int Ed Engl 2007; 46:9086-8. [DOI: 10.1002/anie.200703903] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Wang SN, Sun R, Wang XS, Li YZ, Pan Y, Bai J, Scheer M, You XZ. Versatile lanthanide coordination assemblies due to the synergistic effect of lanthanide contraction and flexibility of a flexible tricarboxylate ligand. CrystEngComm 2007. [DOI: 10.1039/b708104a] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gembus A, Corzilius B, Eichel RA, Dinse KP, Immel S, Stumm D, Flauaus M, Plenio H. Electron Paramagnetic Resonance Structure Investigation of Copper Complexation in a Hemicarcerand. J Phys Chem B 2006; 110:15012-20. [PMID: 16869616 DOI: 10.1021/jp062158x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The double-bridged hemicarcerand [A,B-(CH2OH)2-cavitand]-(CH2NHCH2)2-[A,B-(CH2OH)2-cavitand] 23 (and several other related compounds) was synthesized by the condensation of the two complementary precursors A,B-(CH2NH2)2(CH2OH)2-cavitand and A,B-(CH2Br)2(CH2OAc)2-cavitand followed by hydrolysis of the acetate groups. This hemicarcerand has nitrogen and oxygen donor atoms located on the interior of the spherical cavity and thus allows endohedral coordination of metal ions. The cavity has a volume of approximately 0.12 nm3, a value obtained by calculating a Connolly-type contact surface and the molecular electrostatic potential. The Cu2+ complex of hemicarcerand 23 was studied in detail by EPR and DFT calculations at the UB3LYP/6-31G level to verify the anticipated endohedral nature of the metal complex. It could be shown that the copper ion is coordinated to four oxygen donor atoms and no deviation from axial symmetry at the copper site could be detected. No direct coordination to nitrogen atoms of the hemicarcerand could be observed; however, complexation with DMF solvent molecules was detected by ESEEM and HYSCORE experiments. The closed structure of the hemicarcerand was also confirmed by an evaluation of proton-copper distances. Results from DFT calculations are in accord with the EPR results, and further support suggested coordination of the Cu(II) within the hemicarcerand cavity by four oxygen donor atoms.
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Affiliation(s)
- A Gembus
- Eduard-Zintl-Institute for Inorganic and Physical Chemistry, Petersenstr. 19-21, and Clemens-Schöpf-Institute for Organic Chemistry and Biochemistry, Petersenstr. 22, Darmstadt University of Technology, D-64287 Darmstadt, Germany
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Sumby CJ, Fisher J, Prior TJ, Hardie MJ. Tris(pyridylmethylamino)cyclotriguaiacylene Cavitands: An Investigation of the Solution and Solid-State Behaviour of Metallo-Supramolecular Cages and Cavitand-Based Coordination Polymers. Chemistry 2006; 12:2945-59. [PMID: 16491498 DOI: 10.1002/chem.200501542] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The synthesis of the three isomeric tris(pyridylmethylamino)cyclotriguaiacylene cavitands is reported, along with the crystal structures of the 2- and 4-pyridyl derivatives. The generality of a previously described [Ag(2){tris(3-pyridylmethylamino)cyclotriguaiacylene}(2)](2+) dimeric capsule motif and the [Ag(4){tris(4-pyridylmethylamino)cyclotriguaiacylene}(4)](4+) tetrahedron with several silver salts was confirmed in the solid state and the corresponding solution species were investigated by NMR spectroscopy. Host-guest interactions in these systems have been probed and these interactions are demonstrated to alter and influence the self-assembly outcome of the reaction. Notably, introduction of larger glutaronitrile guest molecules to the [Ag(4)L(4)](4+) tetrahedron system prevents formation of the tetrahedral structure, resulting instead in the formation of a 4.8(2) coordination network in the solid state. In the absence of templating acetonitrile guests in the [Ag(2)(3)(2)](2+) capsule system, formation of a cage-based one-dimensional coordination polymer is observed.
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Sumby CJ, Hardie MJ. Capsules and Star-Burst Polyhedra: An [Ag2L2] Capsule and a Tetrahedral [Ag4L4] Metallosupramolecular Prism with Cyclotriveratrylene-Type Ligands. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200501358] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Harrison RG, Burrows JL, Hansen LD. Selective Guest Encapsulation by a Cobalt-Assembled Cage Molecule. Chemistry 2005; 11:5881-8. [PMID: 15973741 DOI: 10.1002/chem.200500299] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Metal-assembled resorcinarene-based cages enclose space and entrap organic molecules from water. Addition of cobalt(II) ions to a neutral, aqueous solution of a resorcinarene that has iminodiacetic acids attached to its upper rim results in the formation of cages. These cages not only entrap organic molecules, but they do so in a selective manner. Guests with optimum size, shape, and polarity are preferentially entrapped. For example, selection of p-xylene is twenty thousand times more favorable than that of m-xylene. The enthalpy of resorcinarene deprotonation and cage formation was calculated by performing calorimetry studies and ranged from -305 to -348 kJ mol(-1). The change in enthalpy of guest encapsulation varied by as much as 43 kJ mol(-1). The differences in change in free energy of guest encapsulation varied by -16 kJ mol(-1). The changes in enthalpy and free energy of guest encapsulation were used to calculate the changes in entropy, which ranged from -97 to +37 J mol(-1) K(-1). An enthalpy-entropy compensation of guest encapsulation was observed.
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Affiliation(s)
- Roger G Harrison
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, USA.
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Sumby CJ, Hardie MJ. Capsules and Star-Burst Polyhedra: An [Ag2L2] Capsule and a Tetrahedral [Ag4L4] Metallosupramolecular Prism with Cyclotriveratrylene-Type Ligands. Angew Chem Int Ed Engl 2005; 44:6395-9. [PMID: 16145700 DOI: 10.1002/anie.200501358] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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McKinlay RM, Thallapally PK, Cave GWV, Atwood JL. Hydrogen-Bonded Supramolecular Assemblies as Robust Templates in the Synthesis of Large Metal-Coordinated Capsules. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200501491] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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McKinlay RM, Thallapally PK, Cave GWV, Atwood JL. Hydrogen-Bonded Supramolecular Assemblies as Robust Templates in the Synthesis of Large Metal-Coordinated Capsules. Angew Chem Int Ed Engl 2005; 44:5733-6. [PMID: 16080229 DOI: 10.1002/anie.200501491] [Citation(s) in RCA: 112] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Robert M McKinlay
- Department of Chemistry, University of Missouri-Columbia, Columbia, MO 65211, USA
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Park SJ, Shin DM, Sakamoto S, Yamaguchi K, Chung YK, Lah MS, Hong JI. Dynamic Equilibrium between a Supramolecular Capsule and Bowl Generated by Inter- and Intramolecular Metal Clipping. Chemistry 2005; 11:235-41. [PMID: 15549767 DOI: 10.1002/chem.200400801] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The metal-induced self-assembly of a resorcin[4]arene derivative 1 that has four pyridine units as pendent groups and two equivalents of [M(dppp)(OTf)(2)] (M=Pd, Pt) results in a dynamic equilibrium between an interclipped supramolecular capsule 3 and an intraclipped bowl 4 in nitromethane, although the interclipped capsule 3 is formed as a sole adduct in chloroform/methanol and the intraclipped bowl 4 is formed exclusively in an aqueous phase. This demonstrates how metal-induced self-assembly can be tuned by subtle changes in the solvent system. The coexistence of the two structures in nitromethane was characterized by NMR spectroscopy and coldspray ionization mass spectrometry (CSI-MS). The crystal structure of the interclipped capsule 3 b, which is composed of two units of ligand 1 and four Pt(II) ions, reveals the capsule cavity to have nanoscale dimensions of 15x20 A. NMR spectra show that the dynamic equilibrium between 3 and 4 is dependent on concentration and temperature. Temperature-dependent (1)H NMR spectroscopy was carried out from 273 to 343 K to verify the thermodynamic parameters that control the dynamic equilibrium process; the conversion from the interclipped supramolecular capsule 3 a to the intraclipped bowl 4 a is entropically favored and enthalpically disfavored. The rotational barrier of the restricted rotation of pyridine units in the intraclipped bowl 4 was determined by line-shape analysis.
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Affiliation(s)
- Seong Jin Park
- School of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-747, Korea
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31
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Novel Ag(I) complexes with propeller-like structure of tripodal ligand: syntheses and structures of two- and three-coordinate silver (I) complexes. INORG CHEM COMMUN 2003. [DOI: 10.1016/s1387-7003(03)00020-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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32
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Kim HJ, Moon D, Lah MS, Hong JI. An Enantiomerically Pure Propeller-Shaped Supramolecular Capsule Based on the Stereospecific Self-Assembly of Two Chiral Tris(oxazoline) Ligands around Three AgIIons. Angew Chem Int Ed Engl 2002. [DOI: 10.1002/1521-3757(20020902)114:17<3306::aid-ange3306>3.0.co;2-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kim HJ, Moon D, Lah MS, Hong JI. An enantiomerically pure propeller-shaped supramolecular capsule based on the stereospecific self-assembly of two chiral tris(oxazoline) ligands around three Ag(I) ions. Angew Chem Int Ed Engl 2002; 41:3174-7. [PMID: 12207380 DOI: 10.1002/1521-3773(20020902)41:17<3174::aid-anie3174>3.0.co;2-6] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hae-Jo Kim
- School of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-747, Korea
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Aoki S, Shiro M, Kimura E. A cuboctahedral supramolecular capsule by 4:4 self-assembly of Tris(Zn(II)-cyclen) and trianionic trithiocyanurate in aqueous solution at neutral pH (cyclen=1,4,7,10-tetraazacyclododecane). Chemistry 2002; 8:929-939. [PMID: 11857707 DOI: 10.1002/1521-3765(20020215)8:4%3c929::aid-chem929%3e3.0.co;2-q] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A 1:1 mixture of a tris(Zn(II)-cyclen) (1: [Zn(3)L(1)], L(1)=1,3,5-tris(1,4,7,10-tetraazacyclododecan-1-ylmethyl)benzene) and trithiocyanuric acid (TCA) yielded a 4:4 self-assembly complex [(Zn(3)L(1))(4)-(TCA(3-))(4)] (6) through the formation of Zn(II)-S(-) coordination bonds and hydrogen bonds between 1,3,5-triazine N and cyclen NH (cyclen=1,4,7,10-tetraazacyclododecane); the supramolecular capsule structure was revealed by X-ray crystal structure analysis. The capsule exterior represents a twisted cuboctahedral framework containing a nanoscale truncated tetrahedral cavity. The crystal data: formula C(144)H(308)N(72)O(58)S(12)Zn(12) (6[NO(3)](12) x 22 H(2)O), M(r)=5145.75, cubic, space group F432 (No. 209), a=39.182(1) A, V=60153(3) A (3), Z=8, R=0.100, R(w)=0.259. Lipophilic organic molecules with the matching sizes, for example, ([D(4)]-2,2,3,3)-3-(trimethylsilyl)propionic acid (TSP), 1-adamantanecarboxylic acid, 2,4-dinitrophenol (2,4-DNP), adamantane (ADM), or the tetra-n-propylammonium (TPA) cation, are encapsulated in the inner cavity, as revealed by remarkable upfield shifts of the (1)H NMR signals of these guest molecules. The encapsulation of ADM was confirmed by X-ray crystal structure analysis. Crystal data of the ADM-encapsulating complex: formula C(154)H(334)N(72)O(63)S(12)Zn(12) (6-ADM[NO(3)](12) x 27 H(2)O), M(r)=5372.06, cubic, space group F432 (No. 209), a=39.061(1) A, V=59599(3) A(3), Z=8, R=0.103, R(w)=0.263. The 4:4 self-assembly was stabilized by incorporation of one of these guest molecules. The apparent 4:4 self-assembly constants for 6 in the presence of an excess amount of a guest TPA, log K(app) (K(app)=[6-TPA]/[1](4)[TCA](4)) (M(-7))), were determined to be 34.0+/-2.0 and 35.5+/-3.0 by potentiometric pH and UV spectrophotometric titrations, respectively. An apparent encapsulation constant for 2,4-DNP, log K(enc) (K(enc)=[6-2,4-DNP]/[6][2,4-DNP] (M(-1))), was 6.0+/-0.1 at pH 7.0 (50 mM HEPES with I=0.1 (NaNO(3))), as determined by UV titrations. The lipophilicity of the inner cavity was close to that of 2-propanol, as a quantum yield (phi) of 0.24+/-0.1 for the fluorescent emission of 7-diethylaminocoumarin-1-carboxylic acid (20 microM) in the capsule was close to the phi of 0.22 found for 2-propanol. Encapsulation properties of the present Zn(II)-containing cage have been compared with those of cyclodextrins and Fujita's Pd(II)-containing supramolecular cage. The exterior chirality of the 4:4 complex was controlled from within by an encapsulated chiral guest molecule, 2,10-camphorsultam, as indicated by Cotton effects in the circular dichroism spectra.
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Affiliation(s)
- Shin Aoki
- Department of Medicinal Chemistry Faculty of Medicine, Hiroshima University Kasumi 1-2-3, Minami-ku, Hiroshima, 734-8551, Japan
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Aoki S, Shiro M, Kimura E. A cuboctahedral supramolecular capsule by 4:4 self-assembly of Tris(Zn(II)-cyclen) and trianionic trithiocyanurate in aqueous solution at neutral pH (cyclen=1,4,7,10-tetraazacyclododecane). Chemistry 2002; 8:929-39. [PMID: 11857707 DOI: 10.1002/1521-3765(20020215)8:4<929::aid-chem929>3.0.co;2-q] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A 1:1 mixture of a tris(Zn(II)-cyclen) (1: [Zn(3)L(1)], L(1)=1,3,5-tris(1,4,7,10-tetraazacyclododecan-1-ylmethyl)benzene) and trithiocyanuric acid (TCA) yielded a 4:4 self-assembly complex [(Zn(3)L(1))(4)-(TCA(3-))(4)] (6) through the formation of Zn(II)-S(-) coordination bonds and hydrogen bonds between 1,3,5-triazine N and cyclen NH (cyclen=1,4,7,10-tetraazacyclododecane); the supramolecular capsule structure was revealed by X-ray crystal structure analysis. The capsule exterior represents a twisted cuboctahedral framework containing a nanoscale truncated tetrahedral cavity. The crystal data: formula C(144)H(308)N(72)O(58)S(12)Zn(12) (6[NO(3)](12) x 22 H(2)O), M(r)=5145.75, cubic, space group F432 (No. 209), a=39.182(1) A, V=60153(3) A (3), Z=8, R=0.100, R(w)=0.259. Lipophilic organic molecules with the matching sizes, for example, ([D(4)]-2,2,3,3)-3-(trimethylsilyl)propionic acid (TSP), 1-adamantanecarboxylic acid, 2,4-dinitrophenol (2,4-DNP), adamantane (ADM), or the tetra-n-propylammonium (TPA) cation, are encapsulated in the inner cavity, as revealed by remarkable upfield shifts of the (1)H NMR signals of these guest molecules. The encapsulation of ADM was confirmed by X-ray crystal structure analysis. Crystal data of the ADM-encapsulating complex: formula C(154)H(334)N(72)O(63)S(12)Zn(12) (6-ADM[NO(3)](12) x 27 H(2)O), M(r)=5372.06, cubic, space group F432 (No. 209), a=39.061(1) A, V=59599(3) A(3), Z=8, R=0.103, R(w)=0.263. The 4:4 self-assembly was stabilized by incorporation of one of these guest molecules. The apparent 4:4 self-assembly constants for 6 in the presence of an excess amount of a guest TPA, log K(app) (K(app)=[6-TPA]/[1](4)[TCA](4)) (M(-7))), were determined to be 34.0+/-2.0 and 35.5+/-3.0 by potentiometric pH and UV spectrophotometric titrations, respectively. An apparent encapsulation constant for 2,4-DNP, log K(enc) (K(enc)=[6-2,4-DNP]/[6][2,4-DNP] (M(-1))), was 6.0+/-0.1 at pH 7.0 (50 mM HEPES with I=0.1 (NaNO(3))), as determined by UV titrations. The lipophilicity of the inner cavity was close to that of 2-propanol, as a quantum yield (phi) of 0.24+/-0.1 for the fluorescent emission of 7-diethylaminocoumarin-1-carboxylic acid (20 microM) in the capsule was close to the phi of 0.22 found for 2-propanol. Encapsulation properties of the present Zn(II)-containing cage have been compared with those of cyclodextrins and Fujita's Pd(II)-containing supramolecular cage. The exterior chirality of the 4:4 complex was controlled from within by an encapsulated chiral guest molecule, 2,10-camphorsultam, as indicated by Cotton effects in the circular dichroism spectra.
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Affiliation(s)
- Shin Aoki
- Department of Medicinal Chemistry Faculty of Medicine, Hiroshima University Kasumi 1-2-3, Minami-ku, Hiroshima, 734-8551, Japan
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Padilla‐Tosta ME, Fox OD, Drew MGB, Beer PD. Self‐Assembly of a Mixed‐Valence Copper(
II
)/Copper(
III
) Dithiocarbamate Catenane. Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3757(20011119)113:22<4365::aid-ange4365>3.0.co;2-#] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Miguel E. Padilla‐Tosta
- Department of Chemistry Inorganic Chemistry Laboratory, University of Oxford South Parks Road, Oxford OX1 3QR (UK) Fax: (+44) 1865‐272690
| | - O. Danny Fox
- Department of Chemistry Inorganic Chemistry Laboratory, University of Oxford South Parks Road, Oxford OX1 3QR (UK) Fax: (+44) 1865‐272690
| | - Michael G. B. Drew
- Department of Chemistry, University of Reading Whiteknights, Reading RG6 6AD (UK)
| | - Paul D. Beer
- Department of Chemistry Inorganic Chemistry Laboratory, University of Oxford South Parks Road, Oxford OX1 3QR (UK) Fax: (+44) 1865‐272690
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Padilla-Tosta ME, Fox OD, Drew MGB, Beer PD. Self-Assembly of a Mixed-Valence Copper(II)/Copper(III) Dithiocarbamate Catenane. Angew Chem Int Ed Engl 2001; 40:4235-4239. [DOI: 10.1002/1521-3773(20011119)40:22<4235::aid-anie4235>3.0.co;2-1] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2001] [Indexed: 11/09/2022]
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Vysotsky MO, Pop A, Broda F, Thondorf I, Böhmer V. Molecular motions within self-assembled dimeric capsules with tetraethylammonium cations as guest. Chemistry 2001; 7:4403-10. [PMID: 11695674 DOI: 10.1002/1521-3765(20011015)7:20<4403::aid-chem4403>3.0.co;2-j] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Hydrogen-bonded, dimeric capsules of calix[4]arenes substituted at the wide rim by four urea functions show unprecedented dynamic features when a tetraethylammonium cation is included as a guest. The seam of hydrogen bonds C=O...(HN)2C=O in the equatorial region which holds the two calixarene counterparts together changes its directionality fast (at 25 degrees C), while the dimer itself is kinetically stable on the NMR time scale. An energy barrier of deltaG++ = 49.9 kJmol(-1) (Tc 276 K) was estimated for this reorientation from variable-temperature (VT) NMR measurements. Lowering the temperature to about -50 degrees C restricts also the rotation of the encapsulated tetraethylammonium cation around a pseudo C2-symmetry axis in the equatorial plane of the capsule, while its rotation around the C4 axis is still fast. As a result of this restriction two ethyl groups of the tetraethylammonium cation point towards the "poles" of the capsule, while the other pair lies in the "equator" region. Variable-temperature 1H NMR experiments led to a barrier of deltaG++=54.8kJ mol(-1) (Tc 306 K) for the exchange of these different ethyl groups. Studies with the ternary complex formed by a C2v-symmetrical tetraurea proved that both processes, reorientation of the hydrogen bonds and rotation of the guest, take place independently. Molecular dynamics simulations suggest that the capsule is strongly expanded by the larger tetraethylammonium cation in comparison with benzene as guest. Thus, on average only one N-H...O hydrogen bond is formed per urea function and the interaction energy between the two tetraurea calixarenes is less favorable by about 15 kcal mol(-1). This is overcompensated by an energy gain of about 36 kcal mol(-1) due to cation-pi interactions. These results provide a rationale to understand the high stability of the complex inspite of the mobility of the hydrogen-bonded belt.
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Affiliation(s)
- M O Vysotsky
- Fachbereich Chemie und Pharmazie, Abteilung Lehramt Chemie Johannes-Gutenberg-Universität, Mainz, Germany
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Shivanyuk A, Paulus EF, Rissanen K, Kolehmainen E, Böhmer V. Resorcarenes in the boat conformation as building blocks for hydrogen-bonded assemblies including two ammonium cations. Chemistry 2001; 7:1944-51. [PMID: 11405473 DOI: 10.1002/1521-3765(20010504)7:9<1944::aid-chem1944>3.0.co;2-2] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Crystal structures are reported for various co-crystals of rccc-resorcarenes with triethylammonium chloride. Usually, two molecules of a C2v-symmetric tetraester 2 in the boat conformation are linked through four hydrogen-bonded chloride anions to give dimeric assemblies. Two of the chloride anions may be replaced by four hydrogen-bonded ethanol molecules in an otherwise similar structure. These assemblies, which consist of six or eight components, posses voluminous, negatively charged chambers in which two triethylammionium cations, 3+, are included as guests by strong electrostatic and hydrogen-bonding interactions. The host-guest N-H...Cl hydrogen bonds were clearly detected at 173 K. These are the first examples of hydrogen-bonded, solid-state capsules trapping two ions of the same charge in close proximity. In the 1:2 complex with 3+ Cl-, the molecule of the parent resorcarene 1 also adopts a boat conformation whose cavity is considerably extended by four hydrogen-bonded chloride anions. The pocket formed in this way again includes two 3+ ions as a result of electrostatic and hydrogen bonding host-guest interactions. All these structures show that the boat conformers of resorcarenes can be used as a novel motif for the construction of hydrogen-bonded assemblies capable of molecular inclusion and encapsulation.
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Affiliation(s)
- A Shivanyuk
- Department of Chemistry, University of Jyväskylä, Finland.
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Abstract
A new type of calixarene has been synthesised. Like resorcinol and a number of resorcinol derivatives, 2,6-dihydroxypyridine has been proven to form cyclic tetramers in moderate yields with a number of aliphatic and two aromatic aldehydes in acidic media. The problem of the formation of configurational isomers can be reduced by increasing the reaction temperature and time. With electron-rich aromatic aldehydes, 2,6-dihydroxypyridine unexpectedly yields deep-coloured acyclic quinoid systems. The octahydroxypyridine[4]arenes may have a high potential as receptors for molecular recognition and self organisation.
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Affiliation(s)
- T Gerkensmeier
- Institut für Organische Chemie, Christian-Albrechts-Universität zu Kiel, Germany
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