Abstract
The mono- and di-cationic clusters [Co6(µ3-Te)8(PEt3)6][PF6]n(n= 1 2 or 2 3) have been prepared by oxidation of the uncharged species [Co6(µ3-Te)8(PEt3)6]1. The diamagnetic dicationic cluster has been fully characterized by a crystal structure determination: space group P21/c, a= 13.303(3), b= 19.043(3), c= 14.401(7)A, β= 112.30(4)° and Z= 2. The cluster cation, which is isostructural with the other stellated octahedral members of the series [M6(µ3-E)8(PEt3)6]n+(E = S or Se), is significantly distorted, with Co–Co bond distances ranging from 3.005(2) to 3.265(2)A. The magnetic behaviour of [Co6(µ3-Te)8(PEt3)6][PF6]2 is different from that of a BF4– salt previously reported.
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