CuO2

CuO2
Name	CuO2
Caption	Structural depiction (hypothetical)
Othernames	Copper dioxide (nominal)
Formula	CuO2
Molar mass	79.55 g·mol−1 (nominal)
Appearance	Dark (predicted)

CuO2

CuO2 is a nominal copper dioxide stoichiometry discussed in theoretical studies and speculative materials reports. In the literature CuO2 appears in contexts ranging from high‑pressure phase diagrams studied by groups at Lawrence Livermore National Laboratory, Max Planck Society, and University of Cambridge to model systems invoked in analyses of oxide networks in research conducted at Massachusetts Institute of Technology and Stanford University. Although bulk, thermodynamically stable CuO2 is not a widely established compound like CuO or Cu2O, the formula is invoked in experimental claims, computational predictions, and comparative discussions in papers from institutions such as Harvard University and University of Tokyo.

Chemical composition and structure

The nominal composition CuO2 implies one copper atom coordinated to two oxygen atoms; related structural motifs are considered in studies by teams at Oak Ridge National Laboratory, Argonne National Laboratory, and Lawrence Berkeley National Laboratory. Proposed local geometries borrow from coordination environments found in materials characterized by groups at ETH Zurich and École Polytechnique Fédérale de Lausanne (EPFL), and theoretical phases have been explored using methods developed at Princeton University and California Institute of Technology. Crystal structures analogous to CuO2 are often compared to layered oxides investigated by researchers at University of Illinois Urbana–Champaign and Imperial College London, and cluster geometries are benchmarked against data from National Institute of Standards and Technology (NIST).

Synthesis and preparation methods

Reports that discuss routes to CuO2‑like compositions cite high‑pressure, high‑oxygen chemical vapor deposition, and reactive sputtering techniques used in facilities at Rutherford Appleton Laboratory and Brookhaven National Laboratory. Experimental attempts are sometimes carried out in diamond anvil cells at University of Tokyo or using pulsed laser deposition chambers at University of California, Berkeley. Computationally guided synthesis proposals originate from collaborations involving Brookhaven National Laboratory, Los Alamos National Laboratory, and computational chemistry groups at University of Oxford. Investigations referencing industrial techniques performed at Siemens and General Electric laboratories also appear in patents and conference presentations.

Physical and chemical properties

Assessed properties of nominal CuO2 phases are typically extrapolated from spectroscopic data from instruments at European Synchrotron Radiation Facility and Diamond Light Source and from theoretical predictions by groups at IBM Research and Microsoft Research. Reported optical and magnetic signatures are compared with established oxides characterized at National Synchrotron Light Source II and Helmholtz-Zentrum Berlin. Thermal stability and phase transitions are often discussed in the context of high‑pressure experiments performed at Centre National de la Recherche Scientifique (CNRS) and Tokyo Institute of Technology.

Electronic structure and superconductivity relevance

Electronic structure analyses referencing CuO2 stoichiometry are framed against the extensive literature on copper oxides and cuprate superconductors explored at Bell Labs, Brookhaven National Laboratory, and CERN. Density functional theory studies from groups at University of California, Santa Barbara and University of Pennsylvania examine predicted band structures, density of states, and Fermi surface topology; such work often cites methods originating from Princeton University and Rutgers University. The relevance to high‑temperature superconductivity is debated in reviews and conference proceedings organized by American Physical Society and International Union of Crystallography, and contrasted with the cuprate families studied at Argonne National Laboratory and Los Alamos National Laboratory.

Reactivity and chemical behavior

Reactivity claims for CuO2‑like species are assessed against established oxidation and reduction chemistry of copper documented by researchers at Royal Society of Chemistry and American Chemical Society. Corrosion, redox cycling, and oxygen intercalation phenomena are compared with experimental programs at Woods Hole Oceanographic Institution and Scripps Institution of Oceanography when environmental or geochemical implications are discussed. Theoretical investigations into reaction pathways and activation barriers originate from computational chemistry groups at ETH Zurich and University of Cambridge.

Applications and technological significance

Potential or proposed applications invoking CuO2 appear in speculative proposals for catalysis, energy storage, and electronic devices referenced in reports from Toyota Research Institute, Samsung Advanced Institute of Technology, and Intel Corporation. Discussions about catalytic oxidation, oxygen evolution reaction activity, and electrode materials draw analogies to research on related oxides at National Renewable Energy Laboratory, Toyota Central R&D Labs, and General Motors Research Laboratories. Proposed device concepts are sometimes presented at conferences organized by IEEE and Materials Research Society.

Safety and handling

Since bulk CuO2 is not a routinely available, well‑characterized commercial compound, standard precautions follow guidance for copper oxides and oxidizing materials from Occupational Safety and Health Administration, European Chemicals Agency, and laboratory safety offices at Harvard University and University of California, San Diego. Handling protocols align with practices recommended in safety data sheets issued by distributors such as Sigma-Aldrich and procedures adopted by facilities including Lawrence Berkeley National Laboratory.

Category:Copper compounds