Heteroatomic deltahedral clusters: Synthesis and structures of closo-[[[Bi.sub.3][Ni.sub.4][(CO).sub.6]].sup.3-], closo-[[[Bi.sub.3][Ni.sub.4][(CO).sub.6]].sup.2-], the open cluster [[[Bi.sub.3][Ni.sub.4][(CO).sub.9]].sup.3-], and the intermetalloid closo-[[[Ni.sub.x]@{[Bi.sub.6][Ni.sub.6][(CO).sub.8]}].sup.4-]

The synthesis and structures of four Bi-Ni heteroatomic clusters closo-[[[Bi.sub.3][Ni.sub.4][(CO).sub.6]].sup.3-], closo-[[[Bi.sub.3][Ni.sub.4][(CO).sub.6]].sup.2-], the open cluster [[[Bi.sub.3][Ni.sub.4][(CO).sub.9]].sup.3-], and the intermetalloid closo-[[[Ni.sub.x]@{[Bi.sub.6][Ni.sub.6][(CO).sub.8]}].sup.4-] are presented. The clusters are characterized in compounds with potassium cations sequestered by 2,2,2-crypt or 18-crown-6 ether.