Tetrairidium dodecacarbonyl

Iridium compounds: tetrairidium dodecacarbonyl

The iridium in tetrairidium dodecacarbonyl formally is in the oxidation state 0.

Tetrairidium dodecacarbonyl

• Formula as often written: Ir₄(CO)₁₂
• Hill system formula: C₁₂Ir₄O₁₂
• CAS registry number: [18827-81-1]
• Formula weight: 1104.989
• Class: carbonyl complex organometallic

Synonyms

• tetrairidium dodecacarbonyl
• iridium(O) carbonyl
• iridium carbonyl
• iridium dodecacarbonyl

Physical properties

• Colour: yellow
• Appearance: crystalline solid
• Melting point: 195°C (decomposes)
• Boiling point:
• Density:

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Element analysis

Element percentages for the elements in tetrairidium dodecacarbonyl

Element	%
C	13.04
Ir	69.58
O	17.38

Synthesis

Not available

Solid state structure

• Geometry of iridium:
• Prototypical structure:

Isotope pattern

What follows is the calculated isotope pattern for the Ir₄(CO)₁₂ unit with the most intense ion set to 100%.

Formula: Ir₄C₁₂O₁₂

mass  %
1100   5.1 ___
1101   0.7 
1102  34.5 _________________
1103   4.8 __
1104  87.8 ____________________________________________
1105  12.1 ______
1106 100.0 __________________________________________________
1107  13.8 _______
1108  44.1 ______________________
1109   6.0 ___
1110   1.4 _
1111   0.2 
1112   0.0 

References

The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.

• R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
• N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.
• F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in Advanced Inorganic Chemistry, John Wiley & Sons, 1999.
• A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
• R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
• A.R.West in Basic solid state chemistry Chemistry, John Wiley & Sons, 1999.
• A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
• J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
• D.R. Lide, (ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
• J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
• J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.

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Iridium	Iridium
Iridium	Iridium
Iridio	Iridio
Iridium	Irídio