Crystallographic identification of an unusual homoleptic palladium citrate [Na(OH2)6]·{[Na3(OH2) 8]3[NaPd3(C6H4O 7)3]2}·(H2O) stabilised by intermetallic aggregation with sodium and heavy hydration

Abstract

A rare precious metal binary citrate represented by palladium in the form of a water-rich Na-Pd intermetallic aggregate has been isolated and crystallographically characterised. It shows a penta-anionic [NaPd 3(citrate)3]5- core balanced by [Na 3]3+ and Na+ hydrates in a 3-D coordination network stabilised exclusively by citrate bridges and fortified by extensive H-bonding. © 2010 The Royal Society of Chemistry.