51244-07-6Relevant academic research and scientific papers
Reactivity of (NBu4)[Pt(C6F5)2(acac)] toward electrophilic metal centers: Metal-metal vs metal-Cγ(acac) bond formation. Crystal structure of a complex containing a μ2-acac-O,O′ bridging ligand and a coordinated dichloromethane
Forniés, Juan,Martínez, Francisco,Navarro, Rafael,Urriolabeitia, Esteban P.
, p. 1813 - 1819 (1996)
The reaction between (NBu4)[Pt(C6F5)2(acac)] and AgClO4 (1:1 molar ratio) in CH2Cl2 at room temperature gives the neutral tetranuclear complex [PtAg(C6F5)2(acac)]2 (1) in a good yield. The structure, which has been determined by single-crystal X-ray diffraction methods, shows two anionic fragments [Pt(C6F5)2(acac)]- linked by two Ag+ atoms, each silver center being bonded to a Pt atom of one fragment and to an oxygen atom of the acac ligand of the other fragment. Noteworthy structural features are the O-acac coordination of the silver atom (instead of the more usual Cγ coordination) and the unexpected presence of a dichloromethane molecule coordinated to the silver center. The reaction of 1 with tht (tht = SC4H8, tetrahydrothiophene) or PPh3 gives the dinuclear complexes [PtAg(C6F5)2(acac)-(L)] (L = tht (2), PPh3 (3)) by cleavage of the O-Ag bond; alternatively, complexes 2 and 3 can be one-pot synthesized by reaction of (NBu4)[Pt(C6F5)2(acac)] and O3ClOAgL (L = tht, PPh3). Their structural characterization points to the presence of donor-acceptor Pt→Ag bonds. Different behavior is observed in the reaction of (NBu4)[Pt(C6F5)2(acac)] with O3-ClOAuPPh3, giving the dinuclear complex [PtAu(μ-acac)(C6F5)2(PPh3)] (4) in which, as can be seen from its spectroscopic data, the gold atom is bonded to Cγ of the acac ligand.
Synthesis and reactivity of the first (hydrosulfido)gold(III) complex. Crystal structure of the derivatives NBu4[{Au(C6F5)3}2SR] with the isolobal fragments R = H, AuPPh3, AgPPh3
Canales, Fernando,Canales, Silvia,Crespo, Olga,Concepción Gimeno,Jones, Peter G.,Laguna, Antonio
, p. 1617 - 1621 (2008/10/08)
The treatment of NBu4[AuBr(C6F5)3] with NaSH affords the (hydrosulfido)gold(III) complex NBu4[Au(C6F5)3SH]. The latter compound reacts with [Au(C6F5/s
Solid and solution structures of ternary gold(I) complexes with triphenylphosphine and nitrogen-containing ligands
Munakata, Megumu,Yan, Sheng-Gang,Maekawa, Masahiko,Akiyama, Mamoru,Kitagawa, Susumu
, p. 4257 - 4262 (2007/10/03)
A series of gold(I) complexes [Au(PPh3)L]ClO4 (L = pyridine 1a, 2,6-dimethylpyridine 1b, 2,6-di-tert-butylpyridine 1c, quinoline 1d, acridine 1e, benzo[h]quinoline 1f, naphthyridine 2a, 1,10-phenanthroline 2b, 2,2′-biquinoline 2c, di
Aurophilicity at sulfur centers. Synthesis and reactivity of the complex [S(Au2dppf)]; formation of polynuclear sulfur-centered complexes. Crystal structures of [S(Au2dppf)]·2CHCl3, [(μ-Au2dppf){S(Au2dppf)}2](OTf) 2· 8CHCl3, and [S(AuPPh2Me) 2(Au2dppf)]
Canales, Fernando,Gimeno, M. Conceptión,Laguna, Antonio,Jones, Peter G.
, p. 4839 - 4845 (2007/10/03)
Treatment of [Au2Cl2(μ-dppf)] (dppf =1,1′-bis(diphenylphosphino)ferrocene) with Li2S (molar ratio 1:1) in ethanol gives a yellow solid [S(Au2dppf)] (1). The sulfur atom in complex 1 can coordinate several neutral or cationic gold(I) fragments giving the trinuclear neutral [S{Au(C6F5)}(Au2dppf)] (2) or cationic derivatives [S(AuL)(Au2dppf)]ClO4 [L = CH2PPh3 (3), PPh3 (4), PPh2Me (5)]. A pentanuclear complex [Au{S(Au2dppf)2}]ClO4 (6) is obtained by reaction of 2 equiv of complex 1 with 1 equiv of [Au(tht)2]ClO4, in which the central gold atom is bonded to two sulfur atoms. Treatment of compound 1 with [Au2(OTf)2(μ-dppf)] (OTf = trifluoromethylsulfonate) in a molar ratio 2:1 affords the hexanuclear complex [(μ-Au2dppf){S(Au2dppf)}2](OTf)2 (7), in which two SAu3 units are joined through the dppf ligand. The reaction of 1 with 2 equiv of [Au(OClO3)PR3] leads to the quadruply bridging derivatives [S(AuPR3)2(Au2dppf)](ClO4) 2 [PR3 = PPh3 (8), PPh2Me (9)]. Crystal structure determinations were performed for complexes 1, 7, and 9. [S(Au2dppf)] (1) crystallizes in the monoclinic space group P2/n, with a = 12.571(4) A?, b = 10.579(4) A?, c = 15.212(4) A?, β = 107.84(3)°, Z = 2, T = -130 °C. [(μ-Au2dppf){S(Au2dppf)}2](OTf)2 (7) is triclinic, P1, with a = 15.177(3), b = 18.408(4), c = 27.894(8) A?, α = 88.83(2), β = 84.46(2), γ = 67.78(2), Z = 2, T = -100 °C. [S(AuPPh2Me)2(Au2dppf)](ClO4) 2 (9) is triclinic, P1, with a = 13.727(2) A?, b = 15.952(3) A?, c = 17.763(2) A?, α = 71.738(12)°, β= 73.264(14)°, γ= 75.96(2)°, Z = 2, T = -100 °C. All three complexes display short gold(I)-gold(I) interactions.
SYNTHESIS AND STRUCTURAL CHARACTERISATION OF THE MIXED-METAL CLUSTER CATION 5-C5H4R)2(AuP(C6H5)3)2>+ WITH R = H or Si(CH3)3
Fajardo, M.,Gomez-Sal, M. P.,Royo, P.,Carrera, S. Martinez,Blanco, S. Garcia
, p. C44 - C46 (2007/10/02)
Triangular "NbAu2" cluster compounds have been prepared by the reaction of 5-C5H4R)2H3> (R = H, Si(CH3)3) with gold(I) salts and the structure of 5-C5H4Si(CH3)3)2(AuP(C6H5)3)2> PF6 has been determined by X-ray diffraction.
