The title centrosymmetric cluster octakis(4-isopropylpyridine-N)-di-mu (4)-
oxo-hexa-mu (3)-oxo-octa-mu (2)-oxo-decaoxooctamolybdenum(V)dimolybdenum(VI
), [Mo10O26(C8H11N)(8)], consists of ten Mo atoms connected together by bri
dging oxo groups. Pentavalent Mo atoms are linked into four Mo-2(V) pairs b
y metal-metal single bonds with lengths of 2.5637 (6) and 2.6132 (6) Angstr
om.