Synthesis of the cobalt–tellurium ‘stellated’ octahedral clusters [Co6(µ3-Te)8(PEt3)6]n+(n= 1 or 2). Molecular structure of [Co6(µ3-Te)8(PEt3)6][PF6]2
Franco CecconiCarlo A. GhilardiStefano MidolliniAnnabella OrlandiniAlessandro Bencini
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)Å, 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)Å. The magnetic behaviour of [Co6(µ3-Te)8(PEt3)6][PF6]2 is different from that of a BF4– salt previously reported.
Metrics
Topics
Related Documents
Synthesis, characterization and electronic structure of the novel ‘stellated’ octahedral cluster [Co6(µ3-S)7(µ3-H)(PEt3)6]+. Crystal and molecular structure of [Co6(µ3-S)7(µ3-H)(PEt3)6]0.7[Co6(µ3-S)8(PEt3)6]0.3[BPh4]
Franco CecconiCarlo A. GhilardiStefano MidolliniAnnabella OrlandiniPiero ZanelloA. CinquantiniAlessandro BenciniMyriam G. UytterhoevenGianluca Giorgi
Arene–osmium chemistry: synthesis via osmium atoms of [Os(η6-C6H6)(η4-C6H6)],[{OS(η6-C6H3Me3-1,3,5)}2(µ-H)2{µ-CH(C6H3Me2-3,5)}], [{OS(η6-C6H3Me3-1,3,5)}2(µ-CHC6H3Me2-3,5)], and [{OS(η6-C6H6)}3{µ3-(CH2)3CH}(µ-H)3]. X-Ray crystal structure of [{Os(η6-C6H3Me3-1,3,5)}2(µ-CHC6H3Me2-3,5)]
Judith A. BandyMalcolm L. H. GreenDermot O’Hare
Darstellung und Kristallstrukturen von [Co6Se8(PPh3)6]+[CoCl3(THF)]- , [Co8Se8(PPh3)6][Co6Se8(PPh3)6] und [Co8Se8(PPh3)6]+[CoCl3(PPh3)]-
Dieter FenskeJohannes OhmerKurt Merzweiler
Redox behaviour of the iron–sulphur cluster [Fe6(µ3-S)8(PEt3)6]2+. Synthesis and crystal structure of the new paramagnetic monopositive species [Fe6(µ3-S)8(PEt3)6]+as its [PF6]–salt
Franco CecconiCarlo A. GhilardiStefano MidolliniAnnabella OrlandiniPiero Zanello
Molecular CHEVREL-like Clusters [(RhPPh3)6(μ3-Se)8] and [Pd6(μ3-Te)8]4–
Günther ThieleZhiliang YouStefanie Dehnen