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In the perchlorate salt of trans-bis[1,2-bis(diphenylphosphino-P)ethane](hydroxo)(oxo)molybdenum(IV), trans-[Mo(O)(OH)(dppe)2]+ (dppe = C26H24P2), hydrogen bonding from the hydroxo ligand to the perchlorate counterion prevents the type of disorder often observed in O[triple bond]MX units and results in a well defined structure of the cation. The molybdenum-oxo bond length is completely normal for an MoIV—oxo bond. It is argued that the earlier reported structure of this complex, which has been a source of confusion in the literature, was actually describing disordered trans-[Mo(O)(F)(dppe)2](BF4).

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablock fh477

hkl

Structure factor file (CIF format)
Contains datablock fh477

CCDC reference: 129552

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