The Crystal Structure of Cesium Chlorocuprate, Cs<sub>2</sub>CuCl<sub>4</sub>, and the Spectrum of the Chlorocuprate Ion

Helmholz, Lindsay; Kruh, R. F.

doi:10.1021/ja01125a012

Cited by 157 publications

(55 citation statements)

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“…The d-orbital splitting interval, A, for this complex is appreciably less than that for the pseudo-octahedral species described above, but it is larger than that calculated (-5 800 cin-l) from theoretical considerations based on a tetrahedral model (11). I t is known (1,3,6) that in certain systems C U C~~~-is distorted, tending toward a planar structure; because of this distortion a value greater than A,,,, is to be expected for the complex. Therefore, i t is reasonable to assume t h a t the 8 900 cm-I band is due to a complex having distorted tetrahedral symmetry.…”

Section: Psez~do-tetrajzedral Complexmentioning

confidence: 82%

A Spectrophotometric Study of Hexa-, Penta-, and Tetra- Coordinated Halogenocopper(ii) Complexes in Acetone – Hydrohalic Acid Mixtures

Faye¹

1966

Can. J. Chem.

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A spectrophotornetric study of the Cu(I1) -acetone -hydrochloric (hydrobromic) acid systems has revealed that a t relatively high ratios of ha1ide:copper there is a probable equilibriuni between four-, five-, and six-coordinate halogenocopper(I1) complexes. A distorted tetrahedral species is favored a t the highest ratios. Ligand field bands of pseudo-octahedral moilohaloge~locopper(II) colnplexes and, in the visible region, a charge transfer band of the six-coordinate complex, [C~Cl.~(ac)?]~-, have been identified. The results of the present work point to the important role of the solvent in determining the geometries and absorption spectra of the complexes, a factor that seems to have been misinterpreted by some previous workers.

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Section: Psez~do-tetrajzedral Complexmentioning

confidence: 82%

A Spectrophotometric Study of Hexa-, Penta-, and Tetra- Coordinated Halogenocopper(ii) Complexes in Acetone – Hydrohalic Acid Mixtures

Faye¹

1966

Can. J. Chem.

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“…Enfin, nous d6terminerons la loi de variation du moment magn6tique avec la d&ormation du t6tra~dr¢ et nous l'utiliserons pour pr6voir la sym6tri~ des groupements CuC1]-dans les cristaux dont la structure n'est pas encore connue. Helmholz & Kruh (1952) ont montr6 que, dans Cs2CuC14, l'ion CuCI~-n'est pas un t6tra~dre r6gulier…”

Section: Introductionunclassified

Relation entre la symétrie des groupements CuCl₄²⁻tétraédriques et les propriétés physiques des cupritétrachlorures. I. Moment magnétique moyen

Lamotte‐Brasseur¹,

Bossche²

1974

Acta Cryst Sect A

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THE JOINT PROBABILITY DISTRIBUTIONson between the theoretical curve and the experimental results obtained by (13) is shown in Fig. 2. The agreement between theory and practice is satisfactory. In particular, in spite of the presence of a heavy atom (C1), no serious deviation from the theory can be noted in structure (b). Furthermore, it is interesting to note that, owing to the presence of the factor 1/2N in the (EaEaIE1,E2) expression, a high percentage of quartets present A values crowded round the zeroThis behaviour is, therefore, enhanced in structure (c) in comparison with the structures (a) and (b). ConclusionsIn this paper, as in the Harker-Kasper inequalities (3) and (4) and in the Woolfson relation (15), no use is made of the signs S(E2u)and S(E2k). E2h and E2k, nevertheless, are strongly correlated, as is well known, with the sign of the product Eh-kEh+k. Consequently, from a general point of view, the probability density P(Eh, Ek, Eh-k, Eh+k) worked out in this paper can be considered as a useful marginal probability function of the more exhaustive density function P (Eh, Ek,., Eh + k, E2,, E2k). This aspect of the problem will be considered in a further paper.

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“…al., 1966) contains Cu(II) ions octahedrically surrounded by six chloride anions. The CuCl 4 2-in a yellow Cs 2 CuCl 4 (Helmholz & Kruh, 1952) is in tetragonal distortion. Brownish-red compounds of LiCuCl 3 2 2 O (Vossos et al, 1963) and KCuBr 3 (Geiser et al, 1986a) consist of planar u 2 X 6 2-anions (X = Cl, Br) with symmetrical Cu-X-Cu bridges.…”

Section: Electronic Structure and Coordination Geometry Of Cu(ii)-commentioning

confidence: 99%

“…Really, in Cs 2 [CuX 4 ] the mean values of trans-angle  is determined to be 124 deg. for X = Cl (Helmholz & Kruh, 1952) and 128.4 deg. for X = Br (Morosin & Lingafelter, 1960) which corresponds to slightly distorted tetrahedron, as well as tetrahalocuprates containing diprotonated 3-amminopyridine as counter-ions are characterized by planar structures of inorganic anions ( 170.60 deg.…”

Section: Structure Descriptionmentioning

confidence: 99%

Features of Structure, Geometrical, and Spectral Characteristics of the (HL)2[CuX4] and (HL)2[Cu2X6] (X = Cl, Br) Complexes

Kovalchukova¹

2011

Current Trends in X-Ray Crystallography

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The Crystal Structure of Cesium Chlorocuprate, Cs₂CuCl₄, and the Spectrum of the Chlorocuprate Ion

Cited by 157 publications

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A Spectrophotometric Study of Hexa-, Penta-, and Tetra- Coordinated Halogenocopper(ii) Complexes in Acetone – Hydrohalic Acid Mixtures

A Spectrophotometric Study of Hexa-, Penta-, and Tetra- Coordinated Halogenocopper(ii) Complexes in Acetone – Hydrohalic Acid Mixtures

Relation entre la symétrie des groupements CuCl₄²⁻tétraédriques et les propriétés physiques des cupritétrachlorures. I. Moment magnétique moyen

Features of Structure, Geometrical, and Spectral Characteristics of the (HL)2[CuX4] and (HL)2[Cu2X6] (X = Cl, Br) Complexes

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The Crystal Structure of Cesium Chlorocuprate, Cs2CuCl4, and the Spectrum of the Chlorocuprate Ion

Cited by 157 publications

References 0 publications

A Spectrophotometric Study of Hexa-, Penta-, and Tetra- Coordinated Halogenocopper(ii) Complexes in Acetone – Hydrohalic Acid Mixtures

A Spectrophotometric Study of Hexa-, Penta-, and Tetra- Coordinated Halogenocopper(ii) Complexes in Acetone – Hydrohalic Acid Mixtures

Relation entre la symétrie des groupements CuCl42−tétraédriques et les propriétés physiques des cupritétrachlorures. I. Moment magnétique moyen

Features of Structure, Geometrical, and Spectral Characteristics of the (HL)2[CuX4] and (HL)2[Cu2X6] (X = Cl, Br) Complexes

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The Crystal Structure of Cesium Chlorocuprate, Cs₂CuCl₄, and the Spectrum of the Chlorocuprate Ion

Relation entre la symétrie des groupements CuCl₄²⁻tétraédriques et les propriétés physiques des cupritétrachlorures. I. Moment magnétique moyen