USING PLATINUM(II) AS A BUILDING BLOCK TO 2-ELECTRON REDOX SYSTEMS - CRYSTAL-STRUCTURE AND REDOX BEHAVIOR OF CIS-[PTII(3-FERROCENYLPYRIDINE)2CL2]

被引:41
作者
CARUGO, O [1 ]
DESANTIS, G [1 ]
FABBRIZZI, L [1 ]
LICCHELLI, M [1 ]
MONICHINO, A [1 ]
PALLAVICINI, P [1 ]
机构
[1] UNIV PAVIA,DIPARTIMENTO CHIM GEN,I-27100 PAVIA,ITALY
关键词
D O I
10.1021/ic00031a014
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Reaction of 3-ferrocenylpyridine (3-FcPy) with [Pt(II)Cl4]2- gave the square complex cis-[Pt(II)(3-FcPy)2Cl2], which was structurally characterized by X-ray crystallography. The compound, C33H32Cl2Fe2N2OPt, containing a disordered acetone molecule, crystallizes in the triclinic P1BAR space group, with unit cell parameters a = 9.976 (9) angstrom, b = 10.53 (1) angstrom, c = 16.89 (1) angstrom, alpha = 106.5 (1)-degrees, beta = 97.8 (1)-degrees, gamma = 102.8 (1)-degrees, V = 1621 (6) angstrom 3, Z = 2, and d(calcd) = 1.742 g cm-3. The structure converged to an R factor of 3.5%. cis-[Pt(II)(3-FcPy)2Cl2], in acetone, DMSO, or MeCN solution, undergoes a two-electron oxidation process, according to two one-electron reversible steps, which involve the two appended ferrocenyl fragments, whose potentials are separated by only the statistical term (36 mV). It is demonstrated that the cis-[py2Pt(II)] core is a convenient bridging unit to build up novel bis(ferrocene) systems, in which the two relatively close Fc fragments display independent redox activity.
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页码:765 / 769
页数:5
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