Synthesis and characterization of a tetrametallic coordination complex of tetrahydroxy-p-benzoquinone

• Planar, tetranuclear Re(I) based coordination complex of tetrahydroxy-p-benzoquinone.
• Tetrametallic complex was assembled in the absence of ancillary ligand in one step.
• Tetrahydroxy-p-benzoquinone in complex illustrates an unusual octa-dentate binding mode.

A new tetrametallic coordination complex of tetrahydroxy-p-benzoquinone (THBQ = C6O2(OH)4) has been synthesized by a single step reaction of THBQ with Re2(CO)10 in the absence of an ancillary ligand. This is only the second report on the synthesis of a discrete, planar, tetrametallic coordination complex containing THBQ4− anion and its crystal structure.

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