Gold-Group 11 Metal Compounds

Most compounds with Au—Hg bonds whose structure was established by X-ray diffraction fit into two main groups (i) ylide complexes, and (ii) M-centered, Au-rich clusters. 

The reaction of [PPN][Au2 CH2P(S)Ph2 2] with HgCl2, followed by T1PF6 treatment, resulted in a rearrangement of the Au-C bonds and compound 6 was isolated. It is an isomer of compound 5 in the cation of which both gold and mercury are linearly coordinated by a carbon and a sulfur atom. The isomers 5 and 6 do not interconvert under reflux inTHF [36]. The transannular gold-mercury distance in the cation of 6 [2.989(1) A] is about 0.1 A shortest than in the cations containing the 

When the reaction of Hg[CH2P(S)Ph2]2 with Au(tht)Cl was performed in a 1 2 molar ratio the trinuclear species 8 was quantitatively isolated [38]. The molecule 

The development of the second class of compounds with gold-mercury bonds, that is, Hg-containing, Au-rich clusters, was mainly the contribution of Pignolet and coworkers [41-43]. Such compounds were generally obtained by addition of mercury 

The reaction of the preformed 16-electron clusters [ (Ph3P)Au 8M](N03)2 (M = Pt, Pd) with metallic Hg resulted in isolation of the isomorphous 20-electron clusters [ (Ph3P) Au 8M (Hg)2] (N03)2 in which two mercury atoms cap in a (i4-fashion the gold atoms of two opposite square faces in an M-centered square-antiprism [Au-Hg 2.915 

---

The aim of this chapter is to review the chemistry of chalcogenolates in the last 10 years. The more recent reviews in this field included chalcogenolates of the s-block elements,13,14 early transition metal thiolates,15 metal complexes with selenolate and tellurolate ligands,16 copper(I), lithium and magnesium thiolates,17 functionalized thiolate complexes,18 19 pentafluorobenzenethiolate platinum group compounds,20 tellurium derivatives,21 luminescent gold compounds,22 and complexes with lanthanide or actinide.23... 

The lack of homopolyatomic anions for elements to the left of group IV In Table I is noteworthy. Zlntl reported no success with reactions of alkali metal alloys of the copper and zinc family elements and of thallium with liquid ammonia, and the generally stabilizing effect of crypt has not been evident In our own Investigations of alloys of mercury and thallium. On the other hand. It is possible to Isolate a white crypt-potassium gold compound from ammonia solutions at low temperatures which decomposes to elemental gold (+ ) above about -10°C (30). 

This class of compounds showing explosive instability deals with heavy metals bonded to elements other than nitrogen and contains the separately treated groups GOLD COMPOUNDS LEAD SALTS OF NITRO COMPOUNDS LITHIUM PERALKYLURANATES MERCURY COMPOUNDS METAL ACETYLIDES METAL FULMINATES METAL OXALATES PLATINUM COMPOUNDS PRECIOUS METAL DERIVATIVES SILVER COMPOUNDS... 

---