Tris triphenylphosphine nitrosylrhodium

Tetrahydrofuran (150 ml), purified by distillation from LiAlH4 and purged with nitrogen for 30 min, is added under a nitrogen flow to 1.0 g of RhCl3 3H2O contained in a 250-ml-round-bottomed flask equipped with a gas inlet adapter and a reflux condenser. Next, 7.8 g of triphenylphosphine and 6.8 g 

The cobalt nitrosyl complex is a deep-violet crystalline solid which is stable in air but decomposes rapidly in solution in the presence of oxygen. It is soluble in chloroform and dichloromethane but insoluble in ether and alcohols. Its chemistry has been studied recently.  

With the procedure in Sec. A it is possible to prepare various CoNOPs complexes (P = methyldiphenylphosphine, tri-p-fluorophenylphosphine, tri-phenylarsine) whose properties are similar to the triphenylphosphine complex. 

The nitrosyltris(triphenylphosphine)iridium complex, IrNO[P(C6Hs)3]3, can be prepared from IrCls using the procedure in Sec. B. 

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