A new heterotetranuclear cluster compound [Mo~3(PbI~3)S~4(dtp)~3 (C~3H~4N~2)~3][(CH~3)~2CO]~2 (2) was prepared by the reaction of [Mo~3OS~3(dtp)~4(H~2O)] with PbI~3^- in the presence of imidazole (C~3H~4N~2). The cluster structure consists of the neutral Mo-Pb tetranuclear cluster with a cubane-like [Mo~3PbS~4] core and the solvent acetone (CH~3)~2CO. There are hydrogen bonds O- - -H---N between the oxygen atom of the acetone and the (NH) of the imidazol ring of the Mo-Pb Cluster. Crystallographic data: Orthorhombic P~b~c~a (No.61). a=2.3590(3), b=1.9161(5), c=2.6458(9)nm, V=11.959(6) nm^3, Z=8. Final R=0.067.

Key words: CLUSTER COMPOUND, MOLYBDENUM COMPOUNDS, LEAD COMPOUNDS, SULFUR COMPOUNDS, CRYSTAL STRUCTURE, SYNTHESIS, HETEROKARYON, STRUCTURE CHARACTERISTICS