A Novel Polynuclear Gold-Sulfur Cube with an Unusually Large Stokes Shift V.W.-W.Y. acknowledges financial support from the Research Grants Council and The University of Hong Kong, and the receipt of a senior research fellowship from the Croucher Foundation. E.C.-C.C. acknowledges the receipt of a postgraduate studentship (1997-1999) and a Croucher Foundation scholarship (1999-2000), administered by The University of Hong Kong and the Croucher Foundation, respectively. N.Z. acknowledges the receipt of a postdoctoral fellowship from The University of Hong Kong.