New carbenegold(I) complexes synthesized by the acac method

The reaction of [AuCl{C(NEt2)(NHBu)-Bu-t}] with Tl(acac)] (1:1) gives [Au(C-acac){C(NEt2)-(NHBu)-Bu-t}] (1). Complex 1 reacts with 2-pyridinethiol (HSpy-2), C6H4(Cequivalent toCH)(2)-1,3 (2:1), [Ph3PCH2CO2Me]ClO4, [Me3S(O)]ClO4, or [Me3NH]ClO4 to give, respectively, [Au(Spy-2)-{C(NEt2)(NHBu)-Bu-t}] (2), [{AuC(NEt2)(NHBu)-Bu-t}(2)(mu-Cequivalent toCC(6)H(4)Cequivalent toC-3)] (3), [Au{C(NEt2)(NHBu)-Bu-t}-{CH(PPh3)CO2Me}]ClO4 (4), [Au{C(NEt2)(NHBu)-Bu-t}{CH2S(O)Me-2}]ClO4 (5), or [Au{C(NEt2)(NHBu)-Bu-t}(NMe3)]ClO4 (6). The crystal structures of 1, 3, and 5 have been determined.