Bis(tropolonato)copper(II)

Berg, Jan-Eric; Pilotti, A.-M.; Söderholm, Anne-Charlotte; Karlsson, Bengt

doi:10.1107/s0567740878010079

Cited by 15 publications

(12 citation statements)

References 6 publications

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“…Generally very fine needles are obtained. Crystallisation of bis(5octyloxytropolonato)copper from 1,4-dioxan containing 10% acetic acid in a similar way to that used for bis(tropolonato)copper(ii) 15 yielded a suitable crystal for an X-ray diffraction study. ‡ The CuO 4 centre is required by crystallographic symmetry to be precisely planar, and the entire molecule is planar within 7%.…”

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confidence: 99%

New metallomesogens core. New copper complexes with calamitic mesophases using tropolone based ligands. Crystal structure of bis(5-octyloxytropolonato)copper

Chipperfield¹,

Clark²,

Elliott³

et al. 1998

Chem. Commun.

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confidence: 99%

New metallomesogens core. New copper complexes with calamitic mesophases using tropolone based ligands. Crystal structure of bis(5-octyloxytropolonato)copper

Chipperfield¹,

Clark²,

Elliott³

et al. 1998

Chem. Commun.

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“…[6,7] In contrast, several crystal forms have been reported for Cu(hino) 2 . [8][9][10][11][12] In these solids different modes of aggregation by longer bonds in the Jahn-Teller distorted coordination sphere are relevant; we will discuss this aspect in the context of the structures reported www.zaac.wiley-vch.de ARTICLE herein.…”

Section: Was Structurally Characterized Bymentioning

confidence: 91%

“…The solvents for moisture sensitive reactions were dried with molecular sieves and reactions with insensitive components were carried out in commercially available solvents. [Cu(trop) 2 ] and [Cu(hino) 2 ] were prepared according to the literature methods by Berg et al [6] and Barret et al [8] IR spectra were recorded with a Nicolet Avatar360 E.S.P. spectrometer with samples pressed in KBr windows.…”

Section: Methodsmentioning

confidence: 99%

“…The reduced effective Bohr magneton number (μ eff ) at room temperature of 1.20 per copper ion is typical for strongly antiferromagnetic coupled systems. The exchange interactions between Cu atoms in the same polymer strand are therefore modeled by using the following Heisenberg Hamiltonian (6) The parameters J AB and B Figure 6). The increase in the χ m vs. T at very low temperature www.zaac.wiley-vch.de ARTICLE can be attributed to a small monomolecular impurity of a Cu II complex.…”

Section: Fitting Procedures For Di-μ-methoxybis(tropolonato) Dicoppermentioning

confidence: 99%

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Alkoxide bridged Copper(II) Hinokitiolato and Tropolonato Complexes: Polymorphism, Reconstructive Phase Transition, and Magnetic Properties

Schnitzler

Lamberts

Speldrich

et al. 2016

Zeitschrift anorg allge chemie

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Abstract. Polymorphism and an unexpected reconstructive phase transition in [Cu(trop)(μ-OMe)] 2 (trop = tropolonate) were studied by single crystal and powder X-ray diffraction; the phase transition is associated with a huge hysteresis of ca. 200°C. In the readily reproducible crystal form, the methoxide-bridged dinuclear subunits aggregate to infinite chains by longer bonds in the Jahn-Teller distorted coordination sphere. Analogous alkoxide-bridged derivatives with the substi-

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“…A bond-valence analysis (Brown, 2002(Brown, , 2009 of the CuO x bonding in the cis,trans,cis trimer and cis,cis dimer is given in Table 1. The CuO 6 values in (III) are compared with those for bis(tropolonato)copper(II), Cu(trop) 2 , which is most often viewed as a square-planar CuO 4 monomer (Robertson, 1951;Macintyre et al, 1966;Berg et al, 1978). The latter view has, however, been challenged by a subsequent claim that Cu(trop) 2 'exists as a sandwich-type dimer' (Hasegawa et al, 1997); a claim reiterated in a recent review article (Vigato et al, 2009).…”

Section: Commentmentioning

confidence: 99%

Bis(hinokitiolato)copper(II): modification (III)

Ho¹

2010

Acta Crystallogr C

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Bis(hinokitiolato)copper(II), Cu(hino)(2), exhibits both antibacterial and antiviral properties, and has been previously shown to exist in two modifications. A third modification has now been confirmed, namely tetrakis(mu(2)-3-isopropyl-7-oxocyclohepta-1,3,5-trien-1-olato)bis(3-isopropyl-7-oxocyclohepta-1,3,5-trien-1-olato)tricopper(II)-bis(mu(2)-3-isopropyl-7-oxocyclohepta-1,3,5-trien-1-olato)bis[(3-isopropyl-7-oxocyclohepta-1,3,5-trien-1-olato)copper(II)] (1/1), [Cu(C(10)H(11)O(2))(2)](3).[Cu(C(10)H(11)O(2))(2)](2), where 3-isopropyl-7-oxocyclohepta-1,3,5-trien-1-olate is the systematic name for the hinokitiolate anion. This new modification is composed of discrete [cis-Cu(hino)(2)](2)[trans-Cu(hino)(2)] trimers and [cis-Cu(hino)(2)](2) dimers. The Cu atoms are bridged by mu(2)-O atoms from the hinokitiolate ligands to give distorted square-pyramidal and distorted octahedral Cu(II) coordination environments. Hence, the Cu(II) environments are CuO(5)/CuO(6)/CuO(5) for the trimer and CuO(5)/CuO(5) for the dimer. Each trimer and dimer has crystallographically imposed inversion symmetry. The trimer has never been observed before, the dimer has been seen only once before, and the combination of the two together in the same lattice is unprecedented. The CuO(5) cores exhibit four strong basal Cu-O bonds [1.915 (2)-1.931 (2) A] and one weak apical Cu-O bond [2.652 (2)-2.658 (2) A]. The CuO(6) core exhibits four strong equatorial Cu-O bonds [1.922 (2)-1.929 (2) A] and two very weak axial Cu-O bonds [2.911 (3) A]. The bite angles for the chelating hinokitiolate ligands range from 83.13 (11) to 83.90 (10) degrees .

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Bis(tropolonato)copper(II)

Cited by 15 publications

References 6 publications

New metallomesogens core. New copper complexes with calamitic mesophases using tropolone based ligands. Crystal structure of bis(5-octyloxytropolonato)copper

New metallomesogens core. New copper complexes with calamitic mesophases using tropolone based ligands. Crystal structure of bis(5-octyloxytropolonato)copper

Alkoxide bridged Copper(II) Hinokitiolato and Tropolonato Complexes: Polymorphism, Reconstructive Phase Transition, and Magnetic Properties

Bis(hinokitiolato)copper(II): modification (III)

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