Crystallographic analysis of an intramolecularly stabilised organosilver tetramer, [Ag(C6H4CH2NMe2-2)]4, and the first structurally characterised silver siloxide, {[Ag(PPh3)]2(µ4-OMe2SiOSiMe2O)}2

Recrystallisation of [Ag(C6H4CH2NMe2-2)]41 in the presence of PPh3 has led to the isolation of a silver siloxide, {[Ag(PPh3)]2(µ4-OMe2SiOSiMe2O)}22, from interaction with the silicone grease used to assemble the glassware. Both compounds have been characterised crystallographically, and 2 represents the first structurally characterised silver siloxide. The organometallic is a planar tetramer containing both four- and six-co-ordinate silver. The disiloxide adopts a dimeric ‘step’ structure incorporating trigonal PO2Ag and tetrahedral PO3Ag centres.

[1]  W. Schneider,et al.  (Phosphine)gold(I)-silyloxides and -silylthiolates , 1996 .

[2]  C. A. Russell,et al.  Structural Variation in Silver Acetylide Complexes: Syntheses and X-ray Structure Determinations of [Ph3PAgC⋮CPh]4·3.5THF and [Me3PAgC⋮CSiMe3]∞ , 1996 .

[3]  Patrick McArdle,et al.  ORTEX2.1 – a 1677‐atom version of ORTEP with automatic cell outline and cell packing for use on a PC , 1994 .

[4]  Scott R. Wilson,et al.  Crystal structure of [CF3CFC(CF3)Ag]4 and its use as a chemical vapor deposition precursor for silver films , 1993 .

[5]  M. Mahon,et al.  Synthesis and structural characterization of cycloborasiloxanes: The X-ray crystal structures of cyclo-1,3,3,5,5-pentaphenyl-1-bora-3,5-disiloxane and cyclo-1,3,3,5,7,7-hexaphenyl-1,5-dibora-3,7-disiloxane , 1992 .

[6]  Effendy,et al.  Structural, far-IR, and 31P NMR studies of two-coordinate complexes of tris(2,4,6-trimethoxyphenyl)phosphine with silver(I) halides , 1992 .

[7]  J. Ziller,et al.  Reactivity of samarium complex [(C5Me5)2Sm(.mu.-H)]2 in ether and arene solvents. X-ray crystal structures of the internally metalated complex (C5Me5)2Sm(.mu.-H)(.mu.-CH2C5Me4)Sm(C5Me5), the benzyl complex (C5Me5)2Sm(CH2C6H5)(THF), and the siloxide complex [(C5Me5)2Sm(THF)]2(.mu.-OSiMe2OSiMe2O) , 1991 .

[8]  S. Geib,et al.  Preparation and characterization of the monomeric copper(II) siloxide complex Cu[OSi(OCMe3)3]2(py)2 , 1989 .

[9]  M. Jansen.  Homoatomic d10–d10 Interactions: Their Effects on Structure and Chemical and Physical Properties , 1987 .

[10]  J. Calabrese,et al.  Transfer of perfluoroalkyl groups between metals: preparation of the anionic perfluoroalkyl metal complex Ag[CF(CF3)2]2 , 1986 .

[11]  G. Koten,et al.  Solid state structure of [Au2Li2(C6H4CH2NMe2-2)4]. A model for the reactive structure of organocuprates , 1984 .

[12]  Y. Struchkov,et al.  On the structure and properties of 2-silver(dimethylaminomethyl)ferrocene , 1978 .

[13]  B. Teo,et al.  Synthesis, characterization, and bonding of tetrameric triphenylphosphine silver halide cluster systems. Evidence of dictation of stereochemistries by van der Waals interactions , 1975 .

[14]  G. Koten,et al.  Stable arylsilver compounds containing dimethylamino, (dimethylamino)methyl or methoxy groups at the aryl nucleus , 1973 .

[15]  J. G. Noltes,et al.  Bis{2-[dimethylamino)methyl]phenyl}silverlithium, a tetranuclear organometallic compound with bridging aryl groups between silver and lithium , 1973 .

[16]  H. Schmidbaur,et al.  Heterosiloxane des Kupfers, Silbers und Golds , 1972 .

[17]  P. Corfield,et al.  The Crystal Structure of Phenylethynyl(trimethylphosphine)silver (I) , 1966 .