Crystal and molecular structures of bis(4,4',6,6'-tetramethyl-2,2'-bipyridyl)copper(I) perchlorate, bis(4,4',6,6'-tetramethyl-2,2'-bipyridyl)copper(II) diperchlorate, and bis(4,4',6,6'-tetramethyl-2,2'-bipyridyl)copper(II) diperchlorate dihydrate. A search for copper(II) and copper(I) complexes with a common ligand environment

Burke, Philip J.; Henrick, Kim; McMillin, David R.

doi:10.1021/ic00135a035

Cited by 83 publications

(40 citation statements)

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“…In the case of Cu-phen and in the hypothesis that the coordination number is 5, the breaking of a Cu--O bond could bring the Cu coordination number to 4. As found by others [25], this type of coordination is typical of Cu(I).…”

Section: Resultssupporting

confidence: 83%

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Diffraction and XPS studies of Cu complexes of intercalated compounds of α-zirconium phosphate. II: XPS electronic structures

Parmigiani¹,

Depero

1994

Struct Chem

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The description of the crystallographic structure of Cu complexes of intercalated compounds of a-Zr(HPO4)2-H20 (ct-ZrP) reported in part I of this work is implemented with an X-ray photoelectron spectroscopy study performed on the same samples. The experiments carried out at room and liquid nitrogen temperatures, show, in contrast with data previously reported, that Cu 2+ ions are reduced by the AI-Ka and Mg-Kc~ radiations. Nevertheless, some information on the electronic structure has been achieved for those elements that are not photoreduced. In particular, the N ls core line due to the interaction of nitrogen in the phenanthroline with hydrogen in the structure has been identified, and the suppression of this interaction with the increasing concentration of copper has been demonstrated.KEY WORDS: X-ray photoelectron spectroscopy; Cu complexes; intercalated Cu compounds of a-zirconium phosphate; XPS core lines. ~TRODUCTIONStructure models for intercalated compounds of ct-Zr(HPO4)2"H20 (c~-ZrP) were recently proposed [1,2]. The models were derived by considerations on the unit-cell geometry changes undergone by a-ZrP on insertion of the organic molecules and on coordination by copper. In particular, a structural model for oe-Zr(H!_x)2Cux(phen)o.5o(PO4)2nH20 was described (part I) [2]. In this model two phenanthroline molecules are involved in the coordination of the copper ion. In our considerations about the Cu-coordination sphere we made reference to analogous compounds, studied by single-crystal diffraction methods [3][4][5].To achieve a more detailed knowledge on the nature of the chemical bond and on the chemical structure t CISE, S.p.A.

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Section: Resultssupporting

confidence: 83%

“…Finally, a possible explanation to the open problem of the instability of Cu(II) under irradiation can be found in the change in the coordination number of this ion [25].…”

Section: Parmigiani and Deperomentioning

confidence: 99%

Diffraction and XPS studies of Cu complexes of intercalated compounds of α-zirconium phosphate. II: XPS electronic structures

Parmigiani¹,

Depero

1994

Struct Chem

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“…In 2 this distance is 2.350(5) Å , less than the range of 2.55-2.82 Å [48,49], reported for copper(II) complexes containing coordinated perchlorate. As the steric bulk on carboxamide nitrogens increases from isopropyl (2) to isobutyl (3), the Cu1-O3 distance stretches from 2.350(5) to 2.539(4) Å .…”

mentioning

confidence: 62%

Syntheses and X-ray crystal structures of five- and six-coordinate copper(II) complexes of N,N,N′,N′-tetraalkylpyridine-2,6-dicarboxamides containing–OClO₃ and–OSO₂CF₃ counter ions

Kapoor

Pannu

Sharma

et al. 2010

Journal of Coordination Chemistry

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Reactions of anhydrous copper(II) chloride with NaX (1 : 1 or 1 : 2) and AgX (1 : 2) containing appropriate N,N,N 0 ,N 0 -tetraalkylpyridine-2,6-dicarboxamides(O-daap) in CH 3 CN yield monosubstituted five-coordinate [Cu(L 1 )Cl(CF 3 SO 3 )] (1), [Cu(L 2 )Cl(ClO 4 )] (2), [Cu(L 3 )Cl(ClO 4 )] (3), and six-coordinate [Cu(L 2 )(CF 3 SO 3 ) 2 ] Á H 2 O (4) (X¼ ÀOClO 3 and -OSO 2 CF 3 ; L 1 ¼ N,N,N 0 ,N 0 -tetraethylpyridine-2,6-dicarboxamides; L 2 ¼ N,N,N 0 ,N 0 -tetraisopropylpyridine-2,6-dicarboxamides; L 3 ¼ N,N,N 0 ,N 0 -tetraisobutylpyridine-2,6-dicarboxamides). The structures of these complexes have been determined by X-ray crystallography. The Cu 2þ in 1-3 adopts distorted square-pyramidal geometry, while 4 exhibits octahedral structure. Steric factors in conjunction with lattice effects and the nature of the anions are responsible for the variety in coordination spheres. These compounds undergo extensive intermolecular H-bonding to give to 2-D sheets extending along various planes.

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“…In our considerations of the Cu-coordination sphere we refer to analogous compounds as studied by singlecrystal diffraction methods [11][12][13]. In particular, Harrison et al found that Cu complexes of type [Cu(bipy)2C1]2X can exhibit different structures, depending on X, having five-coordinated copper(II) in either with trigonal-bipyramidal or square pyramidal geometry.…”

Section: Structural Model Of R Zr(hi _ X)2cux (Phen)oso(po4)2nh20 (A)mentioning

confidence: 99%

“…It is well known [14] that the pyridine molecule can partially reduce copper, and Burke et al [13] have found two valence states for copper (I and II) in the same type of molecules. Unfortunately the instability of copper under irradiation does not allow any conclusions to be drawn, based on XPS measurements, on its valence state in our compounds.…”

Section: Structural Model Of R Zr(hi _ X)2cux (Phen)oso(po4)2nh20 (A)mentioning

confidence: 99%

Diffraction and XPS studies of Cu complexes of intercalated compounds of α-zirconium phosphate. I: Derivation of structural models from powder diffraction data

et al. 1994

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Reasonable structural models are proposed for the Cu complexes of two intercalated compounds of α-Zr(HPO4)2·H2O (α-ZrP): one with 1,10-phenanthroline (A) and the other with 2,2′-bipyridyl (B). The models are derived from considerations of the unit-cell geometry changes undergone by α-ZrP upon insertion of, first, the organic molecules and then copper, in accordance with a set of general criteria of structural analysis called the "comparison method

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Abstract: Der pseudotetraedrische Club‐Komplex kristallisiert mit Z=4 in der Raiumgrtippe Pben, das Anion ist nicht koordiniert.

Cited by 83 publications

References 10 publications

Diffraction and XPS studies of Cu complexes of intercalated compounds of α-zirconium phosphate. II: XPS electronic structures

Diffraction and XPS studies of Cu complexes of intercalated compounds of α-zirconium phosphate. II: XPS electronic structures

Syntheses and X-ray crystal structures of five- and six-coordinate copper(II) complexes of N,N,N′,N′-tetraalkylpyridine-2,6-dicarboxamides containing–OClO₃ and–OSO₂CF₃ counter ions

Diffraction and XPS studies of Cu complexes of intercalated compounds of α-zirconium phosphate. I: Derivation of structural models from powder diffraction data

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Abstract: Der pseudotetraedrische Club‐Komplex kristallisiert mit Z=4 in der Raiumgrtippe Pben, das Anion ist nicht koordiniert.

Cited by 83 publications

References 10 publications

Diffraction and XPS studies of Cu complexes of intercalated compounds of α-zirconium phosphate. II: XPS electronic structures

Diffraction and XPS studies of Cu complexes of intercalated compounds of α-zirconium phosphate. II: XPS electronic structures

Syntheses and X-ray crystal structures of five- and six-coordinate copper(II) complexes of N,N,N′,N′-tetraalkylpyridine-2,6-dicarboxamides containing–OClO3 and–OSO2CF3 counter ions

Diffraction and XPS studies of Cu complexes of intercalated compounds of α-zirconium phosphate. I: Derivation of structural models from powder diffraction data

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Syntheses and X-ray crystal structures of five- and six-coordinate copper(II) complexes of N,N,N′,N′-tetraalkylpyridine-2,6-dicarboxamides containing–OClO₃ and–OSO₂CF₃ counter ions