63640-04-0Relevant articles and documents
Synthesis and structural studies of some gold(I) complexes containing selenoureato ligands
Molter, Anja,Mohr, Fabian,Rust, Joerg,Lehmann, Christian W.
, p. 10586 - 10591,6 (2012/12/12)
N,N-Diethyl-N′-4-nitrobenzoylselenourea (HLSe) reacts with the mono- and dinuclear phosphine gold(I) chloro complexes [AuCl(PR 3)] (R=Ph, o-tol, Et) and [Au2Cl2(μ-P-P)] (P-P=dppm, dppe, dppp, dppb, dppf) in the presence of base to give gold(I) phosphine selenoureato complexes [Au(LSe)(PR3)] [R=Ph (1), o-tol (2), Et (3)], [Au2(LSe)2(μ-P-P)] [P-P=dppm (4), dppe (5), dppp (6), dppb (7), dppf (8)] in excellent yields. The compounds were fully characterised by spectroscopic methods and, in the case of compounds 1, 5 and 8, by single crystal X-ray diffraction. The compounds consist of a gold atom bound in linear fashion to the phosphine ligand and the selenium atom from the deprotonated acylselenourea. These complexes thus represent the first examples of acylselenoureato metal compounds in which the ligands do not adopt the typical O,Se chelating mode but rather coordinate to the metal only through the selenium atom.
Synthesis, structures and anti-malaria activity of some gold(i) phosphine complexes containing seleno- and thiosemicarbazonato ligands
Molter, Anja,Rust, Joerg,Lehmann, Christian W.,Deepa, Ganesh,Chiba, Peter,Mohr, Fabian
, p. 9810 - 9820 (2011/12/03)
A series of both mono- and dinuclear gold(i) phosphine complexes containing monoanionic seleno- and thiosemicarbazones as ligands were prepared and fully characterized by spectroscopic methods and, in some cases, by single crystal X-ray diffraction. The in vitro anti-malaria activity of some of these compounds was investigated in chloroquine sensitive strains of Plasmodium falciparum. The IC50 results show that the sulfur containing compounds exhibit activity similar to that of chloroquine, whilst the selenium derivatives display only moderate anti-malaria activity.
Polymeric and macrocyclic gold(I) complexes with bridging dithiolate and diphosphine ligands
Hunks, William J.,Jennings, Michael C.,Puddephatt, Richard J.
, p. 3605 - 3616 (2008/10/09)
The reaction of digold(I) diphosphine complexes [Au2(O2CCF3)2(μ-Ph2P-X -PPh2)] with dithiols HS-Y-SH can give either macrocyclic complexes [Au2(μ-S-Y-S)(μ-Ph2P-X-PPh2)] or polymeric complexes [Au2(μ-S-Y-S)(μ-Ph2P-X-PPh2)] n. The structures of the macrocyclic complex [Au2{μ-(S-4-C6H4)2S}{μ -Ph2P(CH2)4PPh2}], and the polymeric complexes [Aun{μ-(S-CH2CO2CH2CH 2O)2-1,4-C6H4}n(μ- trans-Ph2PCH{double bond, long}CHPPh2)n] and [Aun{μ-(S-CH2CO2CH2CH 2O)2-1,5-C10H6}n(μ -trans-Ph2PCH{double bond, long}CHPPh2)n] have been determined. Evidence is presented that the complexes exist primarily as macrocycles in solution and that, in favorable cases, ring-opening polymerization occurs during crystallization.
Luminescent gold(i) macrocycles with diphosphine and 4,4'-bipyridyl ligands
Brandys, Marie-Claude,Jennings, Michael C.,Puddephatt, Richard J.
, p. 4601 - 4606 (2007/10/03)
The complexes [{-Ph2P(CH2)aPPh2AuNC5H4C5H4NAu-y2l:+ [CF3CVL (/; = 1-6) were prepared as colourless, air-stable solids by reaction of silver trifluoroacetate with the corresponding precursor complex [(CH2)(Ph2PAuCl)2], and
Dinuclear Gold(I) Chloride Complexes of 1,4-Bis(diphenylphosphinyl)butane and 1,5-Bis(diphenylphosphinyl)pentane: A Conformational Study
Schmidbaur, H.,Bissinger, P.,Lachmann, J.,Steigelmann, O.
, p. 1711 - 1716 (2007/10/02)
digold dichloride 1 and digold dichloride 2 have been prepared from R2SAuCl (R = CH2CH2OH) and the corresponding bidentate phosphines Ph2P(CH2)nPPh2 (n = 4 or 5) in good yields.The structures of the compounds have been determined by single crystal X-ray diffraction (1*CH2Cl2: space group P, Z = 2; 2*0.5 CH2Cl2: space group C2/c, Z = 8).While the monomers (AuCl)2 are associated through intermolecular Au Au contacts (3.323 Angstroem) to form a chain-like structure, the crystal lattice of 1*CH2Cl2 features independent (AuCl)2 molecules which show no intra- or intermolecular Au Au interactions.This exceptional behaviour can be rationalized on the basis of efficient packing of solvent molecules and molecules 1 with a particularly favourable conformation, which cannot be altered by weak Au(d10)-Au(d10) interactions. Key words: Auriophilicity, Gold(I) Complexes, Bidentate Phosphines, X-Ray
Chemistry of Polynuclear Metal Complexes with Bridging Carbene or Carbyne Ligands. Part 114. Ditungsten-Digold Compounds having two W(CC6H4Me-4)(CO)2(η5-C2B9H9Me2) Fragments linked by AuP(Ph)2(CH2)n(Ph)2PAu (n = 2-6) Groups
Goldberg, Justin E.,Mullica, Donald F.,Sappenfield, Eric L.,Stone, F. Gordon A.
, p. 2495 - 2502 (2007/10/02)
Treatment of 1 equivalent of the reagent CR)(CO)2(η5-C2B9H9Me2)> (R = C6H4Me-4), in the presence of TlBF4, with 0.5 equivalent of the compounds > (n = 2-6) in CH2Cl2 affords the complexes (CO)4(η5C2B9H9Me2)2>.The crystal structure of the species with n = 4 has been determined by X-ray crystallography, confirming that the molecule has two RCW(CO)2(η5-C2B9H9Me2) fragments bridged by an AuP(Ph)2CH2CH2CH2CH2(Ph)2PAu unit, with a centre of inversion at the midpoint of the chain of methylene groups.The W-Au bonds are asymmetrically bridged by the p-tolylmethylidyne ligands .In a similar manner, the compounds 5-C2B9H9Me2)2> have been prepared from reactions between the gold compounds and the salt CR)(CO)2(η5-C2B9H9Me2)>.Addition of (cod = cycloocta-1,5-diene) to the complexes (CO)4(η5C2B9H9Me2)2> affords the chain cluster compounds 3-CR)2(μ-Ph2P(CH2)nPPh2>(CO)4(cod)2(η5-C2B9H9Me2)2>.The NMR data (1H, 13C-, 31P- and 11B- for the new complexes are reported and discussed.
Cyclic μ-(4-Methylcyclohexadien-1-ylidenio)-bis Cations
Schmidbaur, Hubert,Inoguchi, Yoshio
, p. 1646 - 1653 (2007/10/02)
Arylation of α,ω-bisalkanes 1b - d using p-tolyllithium yields the binuclear tolylgold compounds 2n with n = 2, 3, and 4 (2b - d). p-CH3C6H4AuP(CH3)3 was obtained similarly as an NMR reference compound. 2d is converted into the cation p-CH3C6H42+ BF4- on treatment with HBF4 in diethyl ether, with elimination of toluene.The product is ascribed the cyclic structure 3d, based on NMR and 197Au Moessbauer data.
