New hosts, m- and p-bis(diphenylhydroxymethyl)benzene and 2,2′-bis(diphenylhydroxymethyl)-1,1′-diphenyl, were found to exhibit high and selective inclusion tendencies toward a wide variety of guest compounds. Crystal structures of two representative acetone complexes were determined.

Nucleophilic addition of the heterometallic complex [Pd,(dppf),(p-S),] [dppf = 1,l '-bis(dipheny1phosphino)ferrocene] to [AgCl(PPh,)] or AgCl gave [Ag,Pd,Cl,(dppf),- (p,-S),], the first example of a heteropolymetallic aggregate based on a { Pd,S,} core and whose crystal structure shows a planar { Pd,S,} ring with two protruding AgCl fragments.* A similar result was obtained for Pt and Pd phosphine acetates," Pd phosphine acetates are known to be unstable.

The reaction of trans-[RuLCI,] + (L = 1,5,9,13-tetramethyI-l ,5,9,13-tetraazacyclohexadecane) with NO2-in water at 60 "C leads to the formation of trans-[RuL(O)CI]+ and tran~-[RuL(OH)(N0)]~+. The formation of the products can be rationalized by the disproportionation of trans-[RuL(CI) (NO,)] +. The structures of the products have been determined by X-ray crystallography: trans-[RuL(O)CI] CIO,, space group Pna2, (no. 33), a = 12.616(1), b = 15.421 (3), c = 11.292(3) A; Ru=O and Ru-CI 1.75(1) and 2.435(6) A; trans-[R~L(0H)(NO)J[C10,]~, space group Pbca (no. 61), a = 20.459(3), b = 29.16(1), c = 25.1 3(1) A; average Ru-OH and Ru-NO 1.906(9) and 1.74(1) A.

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The crystal structure of anhydrous silver(I)(2-carbamoylphenoxy)acetate has been determined by X-ray diffraction and refined to a residual of 0.041 for 1532 observed reflections. The complex forms crystal: with space group C2/c and Z4 in a unit cell of dimensions a 20.789(6), b 5.202(1) c 17.318(6)Ǻ, β 105.89(2)°. The structure is based on a centrosymmetric bis-carboxylate bridged dimer [Ag-O 2.228(3), 2.266(3)Ǻ, O-Ag-O 155.8(1)°; Ag…Ag 3.001(1)Ǻ] which is extended into an infinite zigzag polymer through the axial positions via the carbamoyl oxygens of adjacent ligands [Ag-O 2.494(3)Ǻ]. Symmetrical long-rang interactions of phenyl-carbon to silver are also found in the structure [Ag-C 3.094, 3.078(4)Ǻ].