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hydroperoxy radical

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Identification
Molecular formula
HO2
CAS number
3170-83-0
IUPAC name
hydroperoxy radical
State
State

The hydroperoxy radical exists as a gas at room temperature. Owing to its radical nature, it is highly reactive and not usually isolated or stored, but rather observed in situ in environments where reactive species are generated.

Melting point (Celsius)
-109.30
Melting point (Kelvin)
163.85
Boiling point (Celsius)
-13.10
Boiling point (Kelvin)
260.05
General information
Molecular weight
33.01g/mol
Molar mass
33.0070g/mol
Density
0.0013g/cm3
Appearence

The hydroperoxy radical is a reactive oxygen species. Being a radical, it does not have a stable visual appearance like many other compounds; instead, it is typically found transiently in the atmosphere and can be involved in various chemical reactions. It is commonly studied in the context of atmospheric chemistry and combustion processes, where it plays a critical role in the degradation of organic compounds.

Comment on solubility

Solubility of Hydroperoxy Radical

The hydroperoxy radical (HO2) is an intriguing molecule in terms of its solubility characteristics. As a radical species, its behavior in solution can vary significantly based on environmental conditions. Below are some key points regarding its solubility:

  • Solvent Dependence: Hydroperoxy radical exhibits different degrees of solubility in various solvents. It is generally more soluble in polar solvents, such as water and alcohols, due to its ability to engage in hydrogen bonding.
  • Reaction Dynamics: In solution, hydroperoxy radicals can react with other solutes, which may alter their concentration and apparent solubility. These reactions can lead to the formation of new products, complicating solubility profiles.
  • Temperature Effects: The solubility of hydroperoxy radicals can be influenced by temperature changes. As temperatures rise, solvent interactions can strengthen, potentially increasing solubility.
  • Concentration Thresholds: At high concentrations, the hydroperoxy radical may undergo self-reaction, leading to decreased effective solubility in a closed system.

In summary, while hydroperoxy radicals are generally more soluble in polar environments, their solubility is intricately linked to factors such as solvent choice, temperature, and the presence of other reactants. Understanding these dynamics is crucial for applications involving radical species in chemical processes.

Interesting facts

Interesting Facts About the Hydroperoxy Radical

The hydroperoxy radical, often represented as HO2, is a fascinating and highly reactive species in the realm of chemistry. This radical plays a crucial role in various atmospheric and biological processes. Here are some intriguing facts:

  • Key Role in Atmospheric Chemistry: The hydroperoxy radical is vital in the process of ozone formation and degradation in the atmosphere. It participates in complex reactions that influence air quality and climate change.
  • Biological Significance: In biological systems, hydroperoxy radicals can be involved in signaling pathways. They can act as secondary messengers that influence cellular processes, including apoptosis (cell death) and immune responses.
  • Formation and Decay: Hydroperoxy radicals are formed during the oxidation of organic compounds and the breakdown of peroxides. They are highly transient and can easily react with other radicals, further propagating oxidative processes.
  • Relationship with Other Radicals: The reactivity of HO2 allows it to interact with other radicals, such as hydroxyl radicals (•OH), leading to the formation of more complex organic species or initiating chain reactions in combustion processes.
  • Measurement Challenges: Detecting and quantifying hydroperoxy radicals can be challenging due to their short-lived nature. Scientists often use advanced techniques such as laser-induced fluorescence to study their behavior in the atmosphere.

Due to its reactivity and involvement in significant chemical processes, the hydroperoxy radical serves as a reminder of the intricate balance of nature and the importance of understanding chemical species that underpin many environmental and biological phenomena.

Synonyms
Perhydroxyl radical
Peroxyl radical
Hydroperoxo
DTXSID30894777
DTXCID501324339
3170-83-0
hydrogenperoxide(1-)
Peroxide (HO21-)
14691-59-9
dioxidanide
HOO anion
hydro-peroxide
hydrogendioxide(1-)
hydrogen(peroxide)(1-)
HOO(-)
CHEBI:29192
MHAJPDPJQMAIIY-UHFFFAOYSA-M
HO2(-)
[HO2](-)
Q413283
Q27109966