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Copper(I) hydroxide
Copper(I) hydroxide is the inorganic compound with the chemical formula of CuOH. Little evidence exists for its existence. A similar situation applies to the monohydroxides of gold(I) and silver(I). Solid CuOH has been claimed however as an unstable yellow-red solid. The topic has been the subject of theoretical analysis. Copper(I) hydroxide would also be expected to easily oxidise to copper(II) hydroxide:
It would also be expected to rapidly dehydrate:
Solid CuOH would be of interest as a possible intermediate in the formation of copper(I) oxide (Cu2O), which has diverse applications, e.g. applications in solar cells.
Theoretical calculations predict that CuOH would be stable. Specifically, the dissociation of Cu(OH)2− leading to CuOH is subject to an energy of 62 ± 3 kcal/mol.
Without evidence for its existence, CuOH has been invoked as a catalyst in organic synthesis
Gaseous CuOH has been characterized spectroscopically using intracavity laser spectroscopy, single vibronic level emission, and microwave spectroscopic detection.
CuOH is calculated to be bent, with the point group Cs. In this case, the bond distance of the Cu-O bond was 1.818 Å and the bond distance of the O-H bond was 0.960 Å. The bond angle for this geometry was 131.9°. The compound is highly ionic in character, which is why this angle is not exactly 120°. Structural parameters for linear CuOH have also been examined computationally.
Although simple CuOH compounds are fairly elusive or restricted to the gas-phase within spectrometers, some derivatives are well characterized.
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Copper(I) hydroxide
Copper(I) hydroxide is the inorganic compound with the chemical formula of CuOH. Little evidence exists for its existence. A similar situation applies to the monohydroxides of gold(I) and silver(I). Solid CuOH has been claimed however as an unstable yellow-red solid. The topic has been the subject of theoretical analysis. Copper(I) hydroxide would also be expected to easily oxidise to copper(II) hydroxide:
It would also be expected to rapidly dehydrate:
Solid CuOH would be of interest as a possible intermediate in the formation of copper(I) oxide (Cu2O), which has diverse applications, e.g. applications in solar cells.
Theoretical calculations predict that CuOH would be stable. Specifically, the dissociation of Cu(OH)2− leading to CuOH is subject to an energy of 62 ± 3 kcal/mol.
Without evidence for its existence, CuOH has been invoked as a catalyst in organic synthesis
Gaseous CuOH has been characterized spectroscopically using intracavity laser spectroscopy, single vibronic level emission, and microwave spectroscopic detection.
CuOH is calculated to be bent, with the point group Cs. In this case, the bond distance of the Cu-O bond was 1.818 Å and the bond distance of the O-H bond was 0.960 Å. The bond angle for this geometry was 131.9°. The compound is highly ionic in character, which is why this angle is not exactly 120°. Structural parameters for linear CuOH have also been examined computationally.
Although simple CuOH compounds are fairly elusive or restricted to the gas-phase within spectrometers, some derivatives are well characterized.