Stable gold(III) complexes with thiosemicarbazone derivatives

Dalton Transactions : an International Journal of Inorganic Chemistry
Isabel Garcia SantosUlrich Abram

Abstract

Novel thiosemicarbazonato complexes of gold(III) have been prepared from reactions of [Au(damp-C1,N)Cl2(damp- = 2-(N,N-dimethylaminomethyl)phenyl) or [NBu4][AuCl4] with 2-pyridineformamide thiosemicarbazones (HL). The thiosemicarbazones deprotonate and coordinate as mononegative, tridentate NNS ligands to gold to give [Au(Hdamp-C1)(L)]Cl2 or [AuCl(L)]Cl complexes. The organometallic damp- ligand is protonated during the reactions and the Au-N bond is cleaved. The [AuCl(L)]+ cations represent the first gold(III) complexes with thiourea derivatives which are not stabilised by an additional organometallic ligand. Reactions of [NBu4][AuX4](X = Cl, Br) with diphenylthiocarbazone (dithizone) result in reduction of the metal and the formation of gold(I) complexes of the composition [AuX(SCN4-3,4-Ph2)] where SCN4-3,4-Ph2 is 3,4-diphenyltetrazole thione which is formed from cyclisation of dithizone.

References

Aug 10, 2000·Acta Crystallographica. Section C, Crystal Structure Communications·F B Stocker, D Britton
Mar 13, 1996·Inorganic Chemistry·Richard V. ParishSimon P. Fricker
Oct 24, 2001·Inorganic Chemistry·Leijun HaoRichard Eisenberg
Apr 5, 2002·Acta Crystallographica. Section C, Crystal Structure Communications·Oscar E PiroAlejandro J Arvia

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Citations

Nov 5, 2014·Future Medicinal Chemistry·Pedro Ivo da Silva MaiaUlrich Abram
Jun 9, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Ahmed H MageedMurray V Baker
Feb 6, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·P I da S MaiaU Abram
Apr 1, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Alfonso CastiñeirasPaloma Sevillano
Jul 5, 2005·Dalton Transactions : an International Journal of Inorganic Chemistry·Denish V PatelDaniel Rabinovich
Feb 25, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Setshaba D KhanyeKelly Chibale
Apr 1, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Alfonso Castiñeiras, Rosa Pedrido
Dec 22, 2020·European Journal of Medicinal Chemistry·Ying SunWukun Liu
Jan 12, 2012·Inorganic Chemistry·Pedro I da S MaiaUlrich Abram

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