The gold(I) center in each of the title complexes, [Au(C3H8N2S)(2)]ClO
4, (1), and [AU(C5H12N2S)(2)]ClO4, (2), is essentially linearly coordi
nated through the S atoms of the dialkylthiourea ligands. The complexe
s crystallize in pairs, with an Au ... Au separation of 3.620(4) and 4
.294(2) Angstrom for (1) and (2), respectively. The perchlorate anion
does not interact with the bis(alkylthiourea)gold(I) cation. Compound
(1) sits on a twofold axis.