In
coordination chemistry
A coordination complex consists of a central atom or ion, which is usually metallic and is called the ''coordination centre'', and a surrounding array of bound molecules or ions, that are in turn known as ''ligands'' or complexing agents. Many ...
, the Das cubane is a
transition metal carboxylate complex
Transition metal carboxylate complexes are coordination complexes with carboxylate (RCO2−) ligands. Reflecting the diversity of carboxylic acids, the inventory of metal carboxylates is large. Many are useful commercially, and many have attracted ...
with the formula
oO(OAc)py
OO or oo may refer to:
Science and technology
* ʻŌʻō, an extinct bird of the genus ''Moho''
* Object-oriented programming, a computer programming paradigm
* O.O (also O.o or o.O), an emoticon to represent two eyes and a nose or mouth
Tran ...
sub>4 where OAc is
acetate
An acetate is a salt (chemistry), salt formed by the combination of acetic acid with a base (e.g. Alkali metal, alkaline, Alkaline earth metal, earthy, Transition metal, metallic, nonmetallic or radical Radical (chemistry), base). "Acetate" als ...
and py is
pyridine. The compound is named after Birinchi K. Das, who led the team that discovered the cluster. The compound features of Co
4O
4 core. Each Co(III) center is
low-spin Spin states when describing transition metal coordination complexes refers to the potential spin configurations of the central metal's d electrons. For several oxidation states, metals can adopt high-spin and low-spin configurations. The ambiguity o ...
and has
octahedral geometry. The compound is prepared by mixing a cobalt(II) salt with acetate and pyridine followed by oxidation with
hydrogen peroxide.
[{{cite journal , doi=10.1021/ic7011759, title=Synthesis, Structure, Spectral and Electrochemical Properties, and Catalytic Use of Cobalt(III)−Oxo Cubane Clusters, year=2007, last1=Chakrabarty, first1=Rajesh, last2=Bora, first2=Sanchay J., last3=Das, first3=Birinchi K., journal=Inorganic Chemistry, volume=46, issue=22, pages=9450–9462, pmid=17910439]
References
Cobalt complexes