Abstrakti
Treatment of the polymeric alkynyl compounds (AuC(2)R)(n) (R = Fc, C(6)H(4)Fc; Fc = ferrocenyl) with the diphosphine PPh(2)C(6)H(4)PPh(2) gave complexes (RC(2)Au)PPh(2)C(6)H(4)PPh(2)(AuC(2)R) (1, R = Fc; 2, R = C(6)H(4)Fc) with end-capped ferrocenyl groups. The reactions of 1 or 2 with Cu(NCMe)(4)PF(6) result in formation of the heterotrimetallic aggregates [{Au(3)Cu(2)(C(2)R)(6)} Au(3)(PPh(2)C(6)H(4)PPh(2))(3)](PF(6))(2) (3, R = Fc; 4, R = C(6)H(4)Fc), which consist of the alkynyl clusters [Au(3)Cu(2)(C(2)R)(6)](-) "wrapped" by the cationic [Au(3)(PPh(2)C(6)H(4)PPh(2))(3)](3+) "belt". The novel compounds were characterized by NMR spectroscopy and ESI-MS measurements. The solid state structure of 3 is reported. Electrochemical properties of the complexes 1 - 4 have been studied. These data show that all six ferrocenyl units are oxidized in the clusters 3 and 4. The Fc groups of 3 are electronically coupled into each other, but in 4 behave essentially independently. Electronic structure calculations have been performed, showing good correlation with the X-ray and electrochemical studies.
Alkuperäiskieli | Englanti |
---|---|
Sivut | 8392-8398 |
Sivumäärä | 7 |
Julkaisu | Dalton Transactions |
Numero | 39 |
DOI - pysyväislinkit | |
Tila | Julkaistu - 2009 |
OKM-julkaisutyyppi | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä |