Unusual Ring Systems Containing Indium. Synthesis and Structure of the First Mercuraindacycles.

The mercuraindacycles bis(&mgr;-1,8-naphthalenediyl)mercury(II)(bis(tetrahydrofuran)chloroindium(III)) (5) and bis(&mgr;-1,8-naphthalenediyl)mercury(II)(bis(tetrahydrofuran)bromoindium(III)) (7) are the products of the reaction of indium(I) halides with 1,8-naphthalenediylbis(mercury(II) halides). Their formation involves a partial transmetalation followed by a spontaneous ring closure. Compounds 5 and 7 have been characterized by (1)H, (13)C, and (199)Hg NMR spectroscopy.

Gold Clustering at the Terminal Functions of Long-Chain Thiols and Amines.

Treatment of 1,6-hexanedithiol with (4)/(3) mol equiv of tris[(triphenylphosphino)aurio(I)]oxonium tetrafluoroborate and sodium tetrafluoroborate affords (n-hexane-1,6-dithiolato)tetrakis-[(triphenylphosphine)gold(I)] bis(tetrafluoroborate) (1). The analogous reactions with beta-mercaptoethylamine, HS(CH(2))(2)NH(2), 1,4-diaminobutane, H(2)N(CH(2))(4)NH(2), and n-butyl- and n-octylamine, CH(3)(CH(2))(n)()NH(2) (n = 3 or 7), give the corresponding penta- (2), hexa- (3), and trinuclear (4, 5) complexes, respectively. The crystal structures of compounds 3 and 5 have been determined by single-crystal X-ray diffraction studies.

Terminally Bifurcated Tetraaurio-alpha,omega-bis(sulfonium) Salts as Building Blocks for Auriophilicity-Determined Coordination Polymers.

Treatment of alpha,omega-dithiols HS(CH(2))(n)()SH, n = 4 or 5, with tris[(triphenylphosphine)aurio]oxonium tetrafluoroborate affords the corresponding S,S,S',S'-tetrakis[(triphenylphosphine)aurio]-alpha,omega-alkanediylbis(sulfonium) bis(tetrafluoroborates) of the type {[(Ph(3)P)Au](2)S(CH(2))(n)()S[Au(PPh(3))](2)}(2+)2BF(4)(-). The crystal structure of the species with n = 5 has been determined by single crystal X-ray diffraction studies. In the lattice the unfolded dications are linked into chains through short double Au-Au contacts between the terminal bifurcated diauriosulfonium centers.