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J. Chem. Soc., Dalton Trans.
Recrystallization of [Cu,l,( PPh,),] from toluene has yielded a new polymorph of that compound, (1 ), which has been shown by single-crystal X-ray diffraction analysis to have a tetrametallic 'cubane' structure rather than the expected 'step' structure. Crystals are monoclinic, space group P2,/n, with a = 19.47( 1 ), b = 26.94(1), c = 13.528(5) A, p = 98.98(4)", Z = 4 tetramers; R was 0.06 for No =doi:10.1039/dt9850000831 fatcat:foph4g4k6bb23c7hfvp647gr74