Subject trinuclear

Carbonylferrates have been the subject of many studies. The well-defined mono-, di-, and trinuclear species [FefCO) ", [Fe2(CO)g] , and [Fe3(CO)ii] have been obtained by a variety of methods in varying yields and degrees of convenience. The procedures described here provide uniform, convenient, high-purity, high-yield syntheses of the sodium salts of these three important reagents. In addition, the preparation of the bis [/<-nitrido-bis(triphenylphosphorusXl + )] salt of [Fe3(CO)n] by metathesis of [(Ph3P)2N]Cl with Na2[Fe3(CO)i i] is presented. 

Several trinuclear iron carbonyl clusters have been subjected to a Fenske-Hall MO treatment by Buhl and co-workers. Hall has released details of the methodology for calculating potential energy surfaces for carbonyls, phosphines etc. using a variety of electron correlation techniques. 

Laccases are used at the cathode of a BFC to catalyze the four-electron electroreduction of 02(which acts as the terminal electron acceptor) to water. They belong to a group of enzymes called blue copper oxidases," due to the presence of a type 1 (T1) copper site in the enzyme. This copper site acts as the primary electron acceptor and imparts laccases with a blue color. Additional copper ions in type 2 and type 3 (T2/T3) sites form a trinuclear cluster that acts as a binding site for molecular oxygen. Here, the electrons transferred firom the T1 site reduce oxygen to water. Laccases have been the subject of study for several decades, and have found use in fields ranging firom wastewater treatment to the paper industry [19,20], However, it is their DET ability and high redox potential that have led to their use in biosensors and BFCs. 

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