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Pentacyanonitrosylferrate(2-)

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Identification
Molecular formula
[Fe(CN)5(NO)]2-
CAS number
14878-55-2
IUPAC name
iron;nitroxyl anion;pentacyanide
State
State

At room temperature, pentacyanonitrosylferrate(2-) is typically found in a solid state as part of its salt form. It is not usually encountered in its free form but rather as a component of various complexes.

Melting point (Celsius)
0.00
Melting point (Kelvin)
0.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
185.98g/mol
Molar mass
185.9800g/mol
Density
1.8900g/cm3
Appearence

Pentacyanonitrosylferrate(2-) appears as a crystalline solid that may vary in color, generally presenting as pale yellow to colorless depending on the specific counter-cation paired with the anion.

Comment on solubility

Solubility of Iron Nitroxyl Pentacyanide

The compound iron nitroxyl pentacyanide, represented by the formula [Fe(CN)5(NO)]2-, exhibits intriguing solubility characteristics that are influenced by its anionic structure and interactions with surrounding solvents.

Factors Affecting Solubility

  • Polarity of the Solvent: The solubility of this compound tends to be higher in polar solvents such as water due to strong ion-dipole interactions.
  • Complexation: The presence of multiple cyanide groups can lead to complex formation, which may enhance solubility in specific metal ion solutions.
  • Charge Distribution: The 2- charge on the anion contributes to its solubility in ionic solutions by promoting interactions with positively charged ions.

Generally, coordination complexes like this one exhibit variable solubility, with factors that can include:

  1. Affects of temperature - solubility may increase with rising temperatures.
  2. pH levels of the solution - varying pH can alter ionization and thus solubility.
  3. Presence of competing ions - other ions in solution can either increase or decrease solubility based on their affinity for the cyanide ligands.

To summarize, the solubility of [Fe(CN)5(NO)]2- is influenced by a combination of molecular structure, solvent properties, and environmental conditions. It represents a fascinating study in solubility behavior associated with coordination compounds.

Interesting facts

Interesting Facts about Iron Nitroxyl Pentacyanide Anion

The iron nitroxyl pentacyanide anion, represented as [Fe(CN)5(NO)]2-, is a fascinating compound with unique properties and applications. This anion serves as an example of how transition metals can interact with ligands to form complex structures.

Unique Characteristics

  • Transition Metal Complex: Iron, a transition metal, plays a crucial role in the stability and reactivity of this complex.
  • Coordination Chemistry: The presence of cyanide (CN-) ligands indicates that this anion demonstrates a rich coordination chemistry, which is a hallmark of many metal complexes.
  • NO Ligand: The inclusion of nitroxyl (NO) adds an interesting aspect to the chemistry of this compound, as it can affect the oxidation state and electronic properties of the iron center.

Applications and Research

This compound is not just a laboratory curiosity. It has potential applications in various fields:

  • Catalysis: The anion's unique structural features may make it a candidate for catalytic processes in organic synthesis.
  • Biological Relevance: Similar compounds are studied for their roles in biological systems, particularly in oxygen transport and electron transfer processes.
  • Material Science: Research into metal cyanide complexes often explores their use in developing new materials, including sensors and electronic devices.

In Summary

The study of [Fe(CN)5(NO)]2- showcases the beauty of coordination chemistry and how second-order structural effects can lead to novel functionalities. The interaction between iron, cyanide ligands, and nitroxyl creates a complex that is ripe for exploration in both fundamental and applied chemistry.