Colorless crystals of CsTh(MoO 4 ) 2 Cl and Na 4 Th(WO 4 ) 4 have been synthesized at 993K by the solid-state reactions of ThO 2 , MoO 3 , CsCl, and ThCl 4 with Na 2 WO 4 . Both compounds have been characterized by the single-crystal X-ray diffraction. The structure of CsTh(MoO 4 ) 2 Cl is orthorhombic, consisting of two adjacent [Th(MoO 4 ) 2 ] layers separated by an ionic CsCl sublattice. It can be considered as an insertion compound of Th(MoO 4 ) 2 and reformulated as Th(MoO 4 ) 2 ·CsCl. The Th atom coordinates to seven monodentate MoO 4 tetrahedra and one Cl atom in a highly distorted square antiprism. Na 4 Th(WO 4 ) 4 adopts a scheelite superlattice structure. The three-dimensional framework of Na 4 Th(WO 4 ) 4 is constructed from corner-sharing ThO 8 square antiprisms and WO 4 tetrahedra. The space within the channels is filled by six-coordinate Na ions. Crystal data: CsTh(MoO 4 ) 2 Cl, monoclinic, P2 1 /c, Z=4, a=10.170(1)Å, b=10.030(1)Å, c=9.649(1)Å, β=95.671(2)°, V=979.5(2)Å 3 , R(F)=2.65% for I>2σ(I); Na 4 Th(WO 4 ) 4 , tetragonal, I4 1 /a, Z=4, a=11.437(1)Å, c=11.833(2)Å, V=1547.7(4)Å 3 , R(F)=3.02% for I>2σ(I).