1
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Zito E, Greenfield TJ, Minichelli J, Nanao M, Turnbull MM, Doyle RP, Zubieta J. Synthesis, structure and magnetic properties of a binuclear Co(II)-pyrophosphate complex, [Co2(phenanthroline-dione)4(P2O7)]. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.06.039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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2
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Greenfield TJ, Julve M, Doyle RP. Exploring the biological, catalytic, and magnetic properties of transition metal coordination complexes incorporating pyrophosphate. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.12.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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3
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Synthesis, crystal structure, spectroscopic studies and magnetic behavior of a new diphosphonate-bridged dinuclear copper(II) complex. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.05.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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4
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Haldar S, Vijaykumar G, Carrella L, Batha S, Musie GT, Bera M. Inorganic Phosphate and Arsenate within New Tetranuclear Copper and Zinc Complexes: Syntheses, Crystal Structures, Magnetic, Electrochemical, and Thermal Studies. ACS OMEGA 2017; 2:1535-1549. [PMID: 31457522 PMCID: PMC6641055 DOI: 10.1021/acsomega.7b00189] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 04/07/2017] [Indexed: 06/10/2023]
Abstract
Three, PO4 3-/HPO4 2- and AsO4 3--incorporated, new tetranuclear complexes of copper(II) and zinc(II) ions have been synthesized and fully characterized. In methanol-water, reactions of H3cpdp (H3cpdp = N,N'-Bis[2-carboxybenzomethyl]-N,N'-Bis[2-pyridylmethyl]-1,3-diaminopropan-2-ol) with copper(II) chloride in the presence of either NaOH/Na2HPO4·2H2O or KOH/Na2HAsO4·7H2O lead to the isolation of the tetranuclear complexes Na3[Cu4(cpdp)2(μ4-PO4)](OH)2·14H2O (1) and K2[Cu4(cpdp)2(μ4-AsO4)](OH)·162/3H2O (2), respectively. Similarly, the reaction of H3cpdp with zinc(II) chloride in the presence of NaOH/Na2HPO4·2H2O yields a tetranuclear complex, Na(H3O)2[Zn4(cpdp)2(μ4-HPO4)]Cl3·121/2H2O (3). All complexes are characterized by single-crystal X-ray diffraction and other analytical techniques, such as Fourier transform infrared and UV-vis spectroscopy, thermogravimetric and electrochemical studies. The solid-state molecular framework of each complex contains two monocationic [M2(cpdp)]+ (M = Cu, Zn) units, which are exclusively coordinated to either phosphate/hydrogen phosphate or arsenate groups in a unique mode. All three complexes exhibit a μ4:η1:η1:η1:η1 bridging mode of the PO4 3-/HPO4 2-/AsO4 3- groups, with each bridging among four metal ions. The thermal properties of all three complexes have been investigated by thermogravimetric analysis. Low-temperature magnetic studies of complexes 1 and 2 disclose moderate antiferromagnetic interactions mediated among the copper centers through alkoxide and phosphate/arsenate bridges. Electrochemical studies of complexes 1 and 2 in dimethylformamide using cyclic voltammetry reveal the presence of a fairly assessable one-electron metal-based irreversible reduction and one quasireversible oxidation couple.
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Affiliation(s)
- Shobhraj Haldar
- Department
of Chemistry, University of Kalyani, Kalyani, West Bengal 741235, India
| | - Gonela Vijaykumar
- Department
of Chemical Sciences, Indian Institute of
Science Education & Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Luca Carrella
- Institut
fur Anorganische Chemie und Analytische Chemie, Johannes-Gutenberg Universitat Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Steven Batha
- Department
of Chemistry, The University of Texas at
San Antonio, San Antonio, Texas 78249, United States
| | - Ghezai T. Musie
- Department
of Chemistry, The University of Texas at
San Antonio, San Antonio, Texas 78249, United States
| | - Manindranath Bera
- Department
of Chemistry, University of Kalyani, Kalyani, West Bengal 741235, India
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Demadis KD, Anagnostou Z, Panera A, Mezei G, Kirillova MV, Kirillov AM. Three-component 1D and 2D metal phosphonates: structural variability, topological analysis and catalytic hydrocarboxylation of alkanes. RSC Adv 2017. [DOI: 10.1039/c7ra00738h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
New metal–organic materials were synthesized based on diphosphonates. They possess interesting structural/topological features, and exhibit substantial catalytic activity in the hydrocarboxylation of alkanes.
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Affiliation(s)
- Konstantinos D. Demadis
- Crystal Engineering
- Growth and Design Laboratory
- Department of Chemistry
- University of Crete
- Heraklion
| | - Zafeiria Anagnostou
- Crystal Engineering
- Growth and Design Laboratory
- Department of Chemistry
- University of Crete
- Heraklion
| | - Aggeliki Panera
- Crystal Engineering
- Growth and Design Laboratory
- Department of Chemistry
- University of Crete
- Heraklion
| | - Gellert Mezei
- Department of Chemistry
- Western Michigan University
- Kalamazoo
- USA
| | - Marina V. Kirillova
- Centro de Química Estrutural
- Complexo I
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
| | - Alexander M. Kirillov
- Centro de Química Estrutural
- Complexo I
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
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6
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Miyazato Y, Wada T, Ohba M, Matsushita N. Synthesis and Characterization of an Ru2(III, IV) Complex Containing Pyrophosphate Bridge. CHEM LETT 2016. [DOI: 10.1246/cl.160721] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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7
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Sartoris RP, Nascimento OR, Santana RC, Perec M, Baggio RF, Calvo R. Structure and magnetism of a binuclear Cu(II) pyrophosphate: transition to a 3D magnetic behaviour studied by single crystal EPR. Dalton Trans 2015; 44:4732-43. [PMID: 25666395 DOI: 10.1039/c4dt03616f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A binuclear Cu(II) compound [Cu2(bpa)2(P2O7)(H2O)2]·2.5H2O, 1, (bpa = 2,2'-bipyridylamine), with pairs of Cu(II) ions bridged by one pyrophosphate tetra-anion, was synthesized and crystallized. Its triclinic structure was determined by single-crystal X-ray diffraction. Electron paramagnetic resonance (EPR) spectra of single crystal samples of 1 were recorded for a fixed orientation of the magnetic field (B0) as a function of temperature (T) between 4.7 and 293 K, and at T = 4.7, 50 and 293 K, as a function of the orientation of B0. Below ∼8 K, the spectra are assigned to two types of mononuclear crystal defects hyperfine-coupled to one copper and two nitrogen nuclei. The g-matrices and hyperfine couplings at these T provide information about the structures of these defects. Above 10 K, the spectrum is dominated by the response of the bulk binuclear Cu(II) material, showing hyperfine interactions with two copper nuclei, collapsing to a single peak above 18 K when the units are magnetically connected, and the magnetic behaviour becomes 3D. We attribute the results above 10 K to the interplay of an AFM intrabinuclear exchange interaction J0 = -28(3) cm(-1) (defined as Hex = -J0S1·S2), and three orders of magnitude weaker exchange coupling with average magnitude |J1| ≥ 0.022 cm(-1) between Cu(II) ions in neighbouring binuclear units. The interplays between structure, exchange couplings, magnetic dimension and spin dynamics in the binuclear compound are discussed. A previously unreported situation, where the structure of the spectra arising from the anisotropic spin-spin interaction term (D) within the binuclear unit is averaged out, but the forbidden half field transition is not, is observed and explained.
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Affiliation(s)
- Rosana P Sartoris
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000 Santa Fe, Argentina.
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Greenfield TJ, Hoffman AE, Marino N, Goos AG, Lloret F, Julve M, Doyle RP. Ferromagnetic Coupling in “Double-Bridged” Dihydrogenpyrophosphate Complexes of Cobalt(II) and Nickel(II). Inorg Chem 2015; 54:6537-46. [DOI: 10.1021/acs.inorgchem.5b00866] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tiffany J. Greenfield
- Department
of Chemistry, Syracuse University, Syracuse, New York 13244-4100, United States
| | - Amanda E. Hoffman
- Department
of Chemistry, Syracuse University, Syracuse, New York 13244-4100, United States
| | - Nadia Marino
- Department
of Chemistry, Syracuse University, Syracuse, New York 13244-4100, United States
| | - Alan G. Goos
- Department
of Chemistry, Syracuse University, Syracuse, New York 13244-4100, United States
| | - Francesc Lloret
- Departament de Quimica Inorganica/Instituto de Ciencia Molecular,
Facultat de Química, Universitat de València, Catedratico
Jose Beltran 2, 46980 Paterna, Valencia, Spain
| | - Miguel Julve
- Departament de Quimica Inorganica/Instituto de Ciencia Molecular,
Facultat de Química, Universitat de València, Catedratico
Jose Beltran 2, 46980 Paterna, Valencia, Spain
| | - Robert P. Doyle
- Department
of Chemistry, Syracuse University, Syracuse, New York 13244-4100, United States
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9
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Sartoris RP, Calvo R, Santana RC, Nascimento OR, Perec M, Baggio RF. Structural and EPR studies of pyrophosphate-bridged dinuclear CuII complexes. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.05.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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10
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Marino N, Hanson SK, Müller P, Doyle RP. Pyro without Fire: Synthesis, Structure, and Reactivity of a Dimeric Vanadyl Pyrophosphate Coordination Complex. Inorg Chem 2012; 51:10077-9. [DOI: 10.1021/ic3015767] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Nadia Marino
- Department of Chemistry, Syracuse University, Syracuse, New York
13244-4100, United States
- Dipartimento di
Chimica, Università della Calabria, via P. Bucci 14/c, 87030 Arcavacata di Rende, Cosenza, Italy
| | - Susan K. Hanson
- Chemistry Division, Los Alamos National Laboratory, Los
Alamos, New Mexico 87544, United States
| | - Peter Müller
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts
02139-4307, United States
| | - Robert P. Doyle
- Department of Chemistry, Syracuse University, Syracuse, New York
13244-4100, United States
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11
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Synthesis, structural, thermal, and magnetic investigations of Co(II), Ni(II), and Mn(II) pyrophosphate chains. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2012.01.054] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Two multi-dimensional frameworks constructed from zinc coordination polymers with pyridine carboxylic acids. J SOLID STATE CHEM 2011. [DOI: 10.1016/j.jssc.2011.09.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Solis-Ibarra D, Silvia JS, Jancik V, Cummins CC. Facile Synthesis of Zero-, One-, and Two-Dimensional Vanadyl Pyrophosphates. Inorg Chem 2011; 50:9980-4. [DOI: 10.1021/ic200510y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Diego Solis-Ibarra
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
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14
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Perec M, Baggio R. Bis[(dihydrogen pyrophosphato-κ(2)O,O')(2,2':6',2''-terpyridine-κ(3)N,N',N'')copper(II)] 4.5-hydrate. Acta Crystallogr C 2011; 67:m140-4. [PMID: 21540530 DOI: 10.1107/s0108270111012121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2011] [Accepted: 03/31/2011] [Indexed: 11/10/2022] Open
Abstract
The title copper complex, [Cu(H(2)P(2)O(7))(C(15)H(11)N(3))](2)·4.5H(2)O, consists of two very similar independent Cu(Tpy)H(2)P(2)O(7) monomeric units (Tpy is 2,2':6',2''-terpyridine) plus four and a half water molecules of hydration, some of which are disordered. Tpy units bind through the usual triple bite via their N atoms, and the H(2)P(2)O(7)(2-) anions coordinate through two O atoms from two different phosphate units. Each independent CuN(3)O(2) chromophore can be described as a slightly deformed square pyramid, with one of them having a sixth, semicoordinated, O atom from a centrosymmetrically related CuN(3)O(2) unit in a weakly bound second apical position suggesting an octahedral environment for the cation and weak dimerization of the molecule. The two independent complex molecules are connected via two strong O-H···O interactions between the phosphate groups to form hydrogen-bonded dinuclear units, further linked into [111] columns, resulting in a very complex three-dimensional supramolecular structure through a variety of classical and nonclassical hydrogen bonds, as well as π-π interactions.
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Affiliation(s)
- Mireille Perec
- INQUIMAE, Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, UBA, Buenos Aires, Argentina
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15
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Marino N, Fazen CH, Blakemore JD, Incarvito CD, Hazari N, Doyle RP. Isostructural PdII and PtII Pyrophosphato Complexes: Polymorphism and Unusual Bond Character in d8−d8 Systems. Inorg Chem 2011; 50:2507-20. [DOI: 10.1021/ic1023373] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Nadia Marino
- Department of Chemistry, Syracuse University, Syracuse, New York 13244-4100, United States
| | - Christopher H. Fazen
- Department of Chemistry, Syracuse University, Syracuse, New York 13244-4100, United States
| | - James D. Blakemore
- Chemistry Department, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, United States
| | - Christopher D. Incarvito
- Chemistry Department, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, United States
| | - Nilay Hazari
- Chemistry Department, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, United States
| | - Robert P. Doyle
- Department of Chemistry, Syracuse University, Syracuse, New York 13244-4100, United States
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Marino N, Ikotun OF, Julve M, Lloret F, Cano J, Doyle RP. Pyrophosphate-Mediated Magnetic Interactions in Cu(II) Coordination Complexes. Inorg Chem 2010; 50:378-89. [DOI: 10.1021/ic1020884] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nadia Marino
- Department of Chemistry, Syracuse University, Syracuse, New York 13244-4100, United States
| | - Oluwatayo. F. Ikotun
- Department of Chemistry, Syracuse University, Syracuse, New York 13244-4100, United States
| | - Miguel Julve
- Departament de Química Inorgànica/Instituto de Ciencia Molecular, Facultat de Química de la Universitat de València, Catedrático José Beltrán 2, 46980 Paterna (València), Spain
| | - Francesc Lloret
- Departament de Química Inorgànica/Instituto de Ciencia Molecular, Facultat de Química de la Universitat de València, Catedrático José Beltrán 2, 46980 Paterna (València), Spain
| | - Juan Cano
- Departament de Química Inorgànica/Instituto de Ciencia Molecular, Facultat de Química de la Universitat de València, Catedrático José Beltrán 2, 46980 Paterna (València), Spain
- Instituto de Ciencia Molecular (ICMol) and Fundació General de la Universitat de València (FGUV), Universitat de València, E-46980 Paterna, València, Spain
| | - Robert P. Doyle
- Department of Chemistry, Syracuse University, Syracuse, New York 13244-4100, United States
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Sartoris RP, Santana RC, Baggio RF, Peña O, Perec M, Calvo R. Pyrophosphate-bridged Cu(II) chain magnet: {[Na3Cu(P2O7)(NO3)].3H2O}n. Inorg Chem 2010; 49:5650-7. [PMID: 20462277 DOI: 10.1021/ic100398k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A Cu(II)...Cu(II) pyrophosphate-bridged compound of formula {[Na(3)Cu(P(2)O(7))(NO(3))].3H(2)O}(n) (1) has been characterized. X-ray diffraction measurements show that it crystallizes in the monoclinic space group P2(1)/m, with unit cell dimensions a = 7.2492(5) A, b = 8.2446(6) A, c = 9.9050(7) A, beta = 107.123(1) degrees, and Z = 2. The structure consists of chains of Cu(II) cations at inversion symmetry sites bound to four equatorial oxygen atoms provided by two pyrophosphate anions halved by a symmetry plane and two axial oxygen atoms of nitrate anions. The molar magnetic susceptibility chi(0) of a powdered sample was measured in the temperature range 2 K < T < 273 K, and an isothermal magnetization curve, M(B(0),T), was obtained at T = 30 K, with the magnetic field B(0) between 0 and 5 T. Fitting a spin-chain model to the susceptibility data, we evaluate an antiferromagnetic exchange coupling 2J = -24.3(1) cm(-1) (defined as H(ex) = -2JS(i)S(j)) between Cu(II) neighbors. For any orientation of B(0), single-crystal electron paramagnetic resonance (EPR) spectra obtained at 9.8 and 33.9 GHz at 300 K display a single signal having a g matrix with orthorhombic symmetry, arising from the merger produced by the exchange interaction of the resonances corresponding to the two rotated Cu(II) sites. The g matrices of the individual molecules calculated assuming axial symmetry yielded principal values g(parallel) = 2.367(1) and g(perpendicular) = 2.074(1) at both frequencies, indicating a d(x(2)-y(2)) ground-state orbital for the Cu(II) ions. The angular variation of the EPR line width suggests exchange narrowing in a system with one-dimensional spin dynamics, as expected from the structure and susceptibility data. The results, discussed in terms of the crystal and electronic structures and of the spin dynamics of the compound, are compared with those obtained in other materials.
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Affiliation(s)
- Rosana P Sartoris
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral and INTEC (CONICET-UNL), Güemes 3450, 3000 Santa Fe, Argentina
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Marino N, Vortherms AR, Hoffman AE, Doyle RP. Expanding Monomeric Pyrophosphate Complexes beyond Platinum. Inorg Chem 2010; 49:6790-2. [DOI: 10.1021/ic1006007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Nadia Marino
- Department of Chemistry, Syracuse University, Syracuse, New York 13244-4100
| | | | - Amanda E. Hoffman
- Department of Chemistry, Syracuse University, Syracuse, New York 13244-4100
| | - Robert P. Doyle
- Department of Chemistry, Syracuse University, Syracuse, New York 13244-4100
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19
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Coordination complexes incorporating pyrophosphate: Structural overview and exploration of their diverse magnetic, catalytic and biological properties. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.12.015] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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20
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Pyrophosphate-bridged complexes with picomolar toxicity. J Inorg Biochem 2009; 103:1254-64. [PMID: 19666193 DOI: 10.1016/j.jinorgbio.2009.07.010] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2009] [Revised: 06/30/2009] [Accepted: 07/06/2009] [Indexed: 11/22/2022]
Abstract
Recently, we have observed the emergence of a new series of pyrophosphate-bridged coordination complexes. Such complexes have been prepared by overcoming the ready hydrolysis of the pyrophosphate moiety. To date, no exploration has been conducted on the cytotoxicity of such complexes. Three pyrophosphate-bridged complexes, namely {[Ni(phen)(2)](2)(mu-P(2)O(7))}.27H(2)O, {[Cu(phen)(H(2)O)](2)(mu-P(2)O(7))}.8H(2)O and {[Co(phen)(2)](2)(mu-P(2)O(7))}.6MeOH, (where phen is 1,10'-phenanthroline) were chosen for their comparative structural similarities and suitable aqueous solubility. Cytotoxicity studies in the adriamycin-resistant ovarian cancer cell line A2780/AD demonstrated highly significant efficacy, with values as low as 160pM for the cobalt complex at 72h. The underlying mechanism for such exceptional toxicity is investigated focusing on DNA interactions, topoisomerase I enzyme inhibition and oxidative stress (followed by intracellular glutathione levels). The role of hydrolysis in uptake and toxicity is also explored (followed by electronic absorption spectroscopy, (31)P NMR, and confocal microscopy) and the complexes are compared to cisplatin controls. Overall a clear picture of the extraordinary toxicity emerged. The results demonstrate a new class of prodrugs with significant potential for future development for the treatment of drug-resistant cancer cell lines.
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Sabiah S, Varghese B, Murthy NN. First hexanuclear copper(ii) pyrophosphate through hydrolysis of phosphodiester with a dicopper complex. Chem Commun (Camb) 2009:5636-8. [DOI: 10.1039/b910094f] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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22
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Ikotun OF, Higbee EM, Ouellette W, Lloret F, Julve M, Doyle RP. Synthesis, Structural, Magnetic and Thermal Characterization of {[Cu(bipy)]2(μ-HP2O7)(μ-Cl)}·H2O. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800617] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Ikotun OF, Ouellette W, Lloret F, Kruger PE, Julve M, Doyle RP. Synthesis, Structural, Thermal and Magnetic Characterization of a Pyrophosphato-Bridged Cobalt(II) Complex. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800196] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Xu JY, Tian JL, Zhang QW, Zhao J, Yan SP, Liao DZ. Tetranuclear pyrophosphate-bridged Cu(II) complex with 2,2′-dipyridylamine: Crystal structure, spectroscopy and magnetism. INORG CHEM COMMUN 2008. [DOI: 10.1016/j.inoche.2007.10.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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25
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Marino N, Mastropietro TF, Armentano D, De Munno G, Doyle RP, Lloret F, Julve M. Spin canting in an unprecedented three-dimensional pyrophosphate- and 2,2′-bipyrimidine-bridged cobalt(ii) framework. Dalton Trans 2008:5152-4. [DOI: 10.1039/b813097n] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Self-Assembled 1D Water Cluster in a Supramolecular Architecture of CoII(Tartrate)(Phenanthroline/Bipyridine): An Assessment of Magnetic Property. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700574] [Citation(s) in RCA: 25] [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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27
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Ikotun OF, Armatus NG, Julve M, Kruger PE, Lloret F, Nieuwenhuyzen M, Doyle RP. Synthesis and Structural and Magnetic Characterization of {[(phen)2Ni]2(μ-P2O7)}·27H2O and {[(phen)2Mn]2(μ-P2O7)}·13H2O: Rare Examples of Coordination Complexes with the Pyrophosphate Ligand. Inorg Chem 2007; 46:6668-74. [PMID: 17636894 DOI: 10.1021/ic700439a] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction in water of M(II) [M = Ni or Mn] with 1,10-phenanthroline (phen) and sodium pyrophosphate (Na4P2O7) in a 2:4:1 stoichiometry resulted in the crystallization of dinuclear complexes featuring the heretofore rare bridging pyrophosphate. Single-crystal X-ray diffraction studies revealed the complexes to be {[(phen)2Ni]2(micro-P2O7)} . 27H2O (1) and {[(phen)2Mn]2(micro-P2O7)} . 13H2O (2) where the asymmetric M(phen)2 units are bridged by bis-bidentate pyrophosphate, each metal ion exhibiting a distorted octahedral geometry. The bridging pyrophosphate places adjacent metal centers at 5.031 A in 1 and 4.700 A in 2, and its conformation also gives rise to an intramolecular pi-pi interaction between two adjacent phen ligands. Intermolecular pi-pi interactions between phen ligands from adjacent dinuclear complexes create an ornate 3D network in 1, whereas a 2D sheet results in 2. The hydrophilic nature of the pyrophosphate ligand leads to heavy hydration with the potential solvent-accessible area for 1 and 2 accounting for 45.7% and 26.4% of their unit cell volumes, respectively. Variable-temperature magnetic susceptibility measurements on polycrystalline samples of 1 and 2 revealed net weak intramolecular antiferromagnetic coupling between metal centers in both compounds with J = -3.77 cm(-1) in 1 and J = -0.88 cm(-1) in 2, the Hamiltonian being defined as H = -JSA.SB. The ability of the bis-bidentate pyrophosphate to mediate magnetic interactions between divalent first row transition metal ions is discussed bearing in mind the number and nature of the interacting magnetic orbitals.
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Affiliation(s)
- Oluwatayo F Ikotun
- Department of Chemistry, Syracuse University, Syracuse, NY 13244-4100, USA
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Ikotun OF, Ouellette W, Lloret F, Julve M, Doyle RP. Synthesis, X-ray Structure, Thermal and Magnetic Behavior of [(bipy)2Ni2(μ-Cl)2Cl2(H2O)2]: The First Neutral Ferromagnetically Coupled Six-Coordinate Dichlorido-Bridged Nickel(II) Dimer. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700179] [Citation(s) in RCA: 16] [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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Doyle RP, Bauer T, Julve M, Lloret F, Cano J, Nieuwenhuyzen M, Kruger PE. Metamorphosis of a butterfly: synthesis, structural, thermal, magnetic and DFT characterisation of a ferromagnetically coupled tetranuclear copper(ii) complex. Dalton Trans 2007:5140-7. [DOI: 10.1039/b711655a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Pfeffer FM, Kruger PE, Gunnlaugsson T. Anion recognition and anion-mediated self-assembly with thiourea-functionalised fused [3]polynorbornyl frameworks. Org Biomol Chem 2007; 5:1894-902. [PMID: 17551638 DOI: 10.1039/b703208k] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three conformationally preorganised host molecules based on the [3]polynorbornyl framework and incorporating di-urea receptors were synthesised and their interaction with a series of anions investigated by (1)H NMR spectroscopy. A high affinity of each host molecule for dihydrogenphosphate (H(2)PO(4)(-)) and dihydrogenpyrophosphate (H(2)P(2)O(7)(2-)) was identified. In addition to binding to the urea receptors of the host molecules, evidence for an interaction involving the non-polar C-H groups within the binding cavity of the framework and guest anions was also discovered. Furthermore, an unusual 2 : 1 host-to-anion stoichiometry was indicated when binding H(2)P(2)O(7)(2-), and a model for the anion-mediated self-assembly of this complex species is proposed.
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Affiliation(s)
- Frederick M Pfeffer
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, Australia.
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Synthesis, structure and thermal analysis of the gallium complex of 1,4,7,10-tetraazacyclo-dodecane-N,N′,N″,N‴-tetraacetic acid (DOTA). Polyhedron 2006. [DOI: 10.1016/j.poly.2006.06.039] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Doyle RP, Julve M, Lloret F, Nieuwenhuyzen M, Kruger PE. Hydrogen-bond tuning of ferromagnetic interactions: synthesis, structure and magnetic properties of polynuclear copper(ii) complexes incorporating p-block oxo-anions. Dalton Trans 2006:2081-8. [PMID: 16625252 DOI: 10.1039/b515889c] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of copper(II) hydroxide with 2,2'-bipyridine (bipy) (1 : 1) in alkaline aqueous solution (pH 14) at room temperature affords the alternating carbonate/hydroxo-bridged copper(II) polymeric chain compound {[Cu3(bipy)3(mu-OH)2(mu-CO3)2].11H2O}n, 1, as determined by single-crystal X-ray diffraction. The structure of 1 is built up from two similar centro-symmetric dinuclear [(bipy)Cu(mu-OH)]2 cores which link together via bridging carbonate groups to mononuclear [(bipy)Cu] fragments to form the chain. Interdigitation of adjacent chains through pi-pi interactions, which involve each bipy ligand, forms sheets that are separated by the water molecules of crystallisation. Variable-temperature magnetic susceptibility measurements have shown that 1 behaves as an isolated spin doublet with two non-interacting spin triplets with the magnetic coupling through the bis-mu-hydroxo bridges being strongly ferromagnetic in nature. The hydrothermal reaction of copper(II) hydroxide, bipy and ammonium hydrogenphosphate (pH 8) yields a dinuclear copper(II) complex of formula {[Cu2(bipy)2(mu-OH)2(HPO4)(H2O)].4H2O}, 2, as determined by single-crystal X-ray diffraction. The structure of consists of an asymmetric dinuclear bis-mu-hydroxo copper(II) core with a monodentate hydrogenphosphate dianion coordinating to one copper(II) atom (above) and a water molecule to the other (below). Intra- and inter-molecular hydrogen bond interactions involving the hydrogenphosphate, water molecules and bis-mu-hydroxo groups link adjacent dinuclear fragments into chains, which interdigitate to form sheets that are separated by the water molecules of crystallisation. The investigation of the magnetic properties of 2 showed that the strength of the ferromagnetic interaction through the bis-mu-hydroxo bridges is influenced by the significant out-of-plane displacement of the hydrogen atom of the hydroxo groups, brought about through hydrogen bonding to the hydrogenphosphate ligand, and yielded the strongest ferromagnetic coupling yet reported for the bis-mu-hydroxo copper(II) core.
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Affiliation(s)
- Robert P Doyle
- School of Chemistry, University of Dublin, Trinity College, Dublin 2, Ireland
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Doyle RP, Nieuwenhuyzen M, Kruger PE. A molecular ‘back-flip’: the structural consequences of the crystal-to-crystal phase transition between [(phen)2CuCO3]·11H2O and [(phen)2CuCO3]·7H2O. CrystEngComm 2006. [DOI: 10.1039/b612319h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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