Self‐Assembly and Characterization of Grid‐Type Copper(<scp>I</scp>), Silver(<scp>I</scp>), and Zinc(<scp>II</scp>) Complexes

Patroniak, Violetta; Stefankiewicz, Artur R.; Lehn, Jean‐Maríe; Kubicki, Maciej

doi:10.1002/ejic.200500313

Cited by 34 publications

(28 citation statements)

References 51 publications

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“…Flavones constitute one of the major classes of naturally occurring products. Synthesis of flavones and their derivatives has attracted considerable attention owing to their significant biocidal, [13] pharmaceutical [14] and antioxidant [15] activities. It has been observed that the presence of hydroxyl groups at position 5 or 7 is frequently required for higher biological activities.…”

Section: Introductionmentioning

confidence: 99%

Copper(II) complexes of hydroxyflavone derivatives as potential bioactive molecule to combat antioxidants: synthesis, characterization and pharmacological activities

Nagashri

Joseph

Dhanaraj³

2011

Applied Organom Chemis

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Section: Introductionmentioning

confidence: 99%

Copper(II) complexes of hydroxyflavone derivatives as potential bioactive molecule to combat antioxidants: synthesis, characterization and pharmacological activities

Nagashri

Joseph

Dhanaraj³

2011

Applied Organom Chemis

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“…21 All of the bond distances and bond angles in the ligand L are in the normal range. The pyridine ring containing N(1) atom and C (6), N(2) and C(14) atoms define a plane P1, while the other pyridine ring containing N(4) atom and C (8), N(3) and C(14) atoms define another plane P2. The dihedral angle between P1 and P2 is 9.68(2)º and the dihedral angles between the phenyl ring and the P1 and P2 are 58.31(3)º and 59.79(3)º, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Comparing the synthetic conditions of the above Zn(II) and Cu(I) complexes with those used in the earlier [2×2] grid complexes, [6][7][8][9] we found that in order to obtain [2×2] grid complexes, one must not only select the appropriate ligand, but also choose the right metal-salt. In the earlier literature, the metal-salts were not simple ones, including [Cu(CH 3 CN) 4 ]PF 6 , Cu(CF 3 SO 3 ) 2 ·C 6 H 6 , Zn(BF 4 ) 2 , AgCF 3 SO 3 , AgBF 4 , Co(BF 4 ) 2 , Fe(BF4) 2 , Mn(ClO 4 ) 2 and so on.…”

Section: 23mentioning

confidence: 99%

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Hydrothermal Synthesis, Crystal Structures and Properties of Zinc(II) Di-nuclear Complex and Copper(I) Coordination Polymer Based on Building Block 2-Phenyl-4,6-di(pyridin-2-yl)pyrimidine

Zhao¹,

Wang²,

Jiang³

et al. 2013

Bulletin of the Korean Chemical Society

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A tetradentate ligand of 2-phenyl-4,6-di(pyridin-2-yl)pyrimidine (L) has been synthesized and its complexes with ZnI 2 and CuI have been obtained by hydrothermal method. single crystal X-ray diffraction analysis indicates that ligand L coordinates with Zn(II) ions to form a simple four-coordinate di-nuclear complex, while the complexation of L with Cu(I) constructs a one-dimensional chain polymer. The existence of I -ion hampers the L to assemble grid-type complexes with Zn(II) and Cu(I). Fluorescence spectra show that the L emits blue fluorescence while its Cu(I) polymer decrease the fluorescence intensity and Zn(II) complex quenches the fluorescence.

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“…Up to date, many fascinating supramolecular structures have been obtained by using metal ions and ligands containing nitrogen-donor atoms, for instance bipyridine [1], terpyridine [2] or tetrapyridine [3], to name a few.…”

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confidence: 99%

Unprecedented Architecture of the Linear (μ-Cl)-Tetranuclear Cobalt Complex with Quaterpyridine Ligand

2011

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The cationic tetranuclear cobalt complex of the geometry Cl-CoL-Cl-CoL-Cl-CoL-Cl-CoL (where L is 6,6 000 -dimethyl-2,2 0 :6 0 ,2 00 :6 00 ,2 000 -quaterpyridine) has been synthesized and structurally characterized. The structural unit contains one cationic ligand, two Eu(NO 3 ) 5 dianions, two solvent acetonitrile molecules and some disordered water molecules. The salt crystallizes in the monoclinic space group C2/c with a = 17.405 (3) Å , b = 28.700 (5) Å and c = 23.350 (5) Å , b = 95.14 (2)8. The cation is C 2 -symmetrical, the central Cl atom lies on the twofold axis. This structure is another example of centro-noncentro ambiguity: in the centrosymmetric model, the terminal Cl in the cation is disordered between the two ends of the chain. The Eu ion is coordinated by five nitro groups, the coordination number is 10-two oxygen atoms of every nitro group are involved in the coordination with the mean Eu-O distance of 2.52(3) Å . The quaterpyridine ligands are folded, the dihedral angle between the terminal ring planes is 29.3 (2) and 32.8 (3)8 in the two symmetry independent ligands. In the crystal structure the coulombic attraction between the cations and anions seems to be a driving force; the ionic species make a chessboard-like pattern, the voids in such created structure are filled with the solvent-acetonitrile molecules as well as by some disordered waters.Keywords Co complexes Á Eu complexes Á Centro-noncentro ambiguity Á Crystal packing Results and DiscussionThe use of transition metal ions capable of bridging multidentate ligands to construct pre-programed, self-assembled small inorganic systems and multi-dimensional infinite supramolecular networks is an area of chemistry which has received ever-increasing attention over recent years. Up to date, many fascinating supramolecular structures have been obtained by using metal ions and ligands containing nitrogen-donor atoms, for instance bipyridine [1], terpyridine [2] or tetrapyridine [3], to name a few.In the present work, we extend these studies of the metalo-ligand complexes based on tetrapyridine ligand coordinated with d-and f-metal ions, obtained in one-pot reaction. The crystals contain cation with four organic ligands coordinated to the four cobalt ion bridged by chloride ions and two penta-nitrato anionic species with nitrate oxygen atoms coordinated to trivalent europium ion. The formation of this type of complex may be understood considering the large stability of polynitrato counter ions [4]. The high affinity of the europium ions for nitrato anions does not allow heterometallic Co-Eu complexes to be prepared from N 4 -donor ligand if the latter anions are present in solution [5].The investigated complex may be of use in several fields of coordination chemistry. In particular, d-and f-polynuclear complexes might be used to fabricate nanomagnetic materials of the potential use in many fields, [6] and due to their electronic properties such as high conductivity as molecular devices in the field of nano-electronics [7,8]. Figures 1 and ...

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Self‐Assembly and Characterization of Grid‐Type Copper(I), Silver(I), and Zinc(II) Complexes

Cited by 34 publications

References 51 publications

Copper(II) complexes of hydroxyflavone derivatives as potential bioactive molecule to combat antioxidants: synthesis, characterization and pharmacological activities

Copper(II) complexes of hydroxyflavone derivatives as potential bioactive molecule to combat antioxidants: synthesis, characterization and pharmacological activities

Hydrothermal Synthesis, Crystal Structures and Properties of Zinc(II) Di-nuclear Complex and Copper(I) Coordination Polymer Based on Building Block 2-Phenyl-4,6-di(pyridin-2-yl)pyrimidine

Unprecedented Architecture of the Linear (μ-Cl)-Tetranuclear Cobalt Complex with Quaterpyridine Ligand

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