Compounds with One l,3-Dichalcogena-ferrocenophane Ring

With respect to intramolecular metal-metal interactions, a series of 1,3-dichalco-gena-[3]ferrocenophanes has been investigated that contain a transition metal complex fragment in the center between the two ring-attached chalcogens (Table 5-5). Hetero-bimetallic complexes of this kind can be considered as either 1,3-dichal- 

In an extension of the chemistry of l,2,3-trithia-[3]ferrocenophane, fc(S3), the corresponding bis(l,2,3-trithia) complex, i.e., l,T,2,2 -bis-(l,2,3-trithia-[3])ferroceno-phane, [Fe(C5H3)2](S3)2, has recently been prepared [271, 272] by tetralithiation of fc(SH)2 with nBuLi. Following the initial deprotonation of fc(SH)2, metallation 

Desulfurization with tri(n-butyl)phosphine converts both fc(S3) (or its /er/-butyl-substituted derivatives) [273, 274] and [Fe(C5H3)2](S3)2 (or its /er/-butyl-substituted analog) [272] to polymers in which the ferrocene units are linked through disulfide bridges (cf. Sect. 5.8), 

2 Compounds with Two or Three l,3-DichaIcogena-[3 ferrocenophane Rings 

The molecular structure of Sn(Sc2fc)2 [260] is based on a pseudo-tetrahedral tin(iv) center (angle Se-Sn-Se 108.6(1)°) the cyclopentadienyl rings of the [fcSez] ligands are eclipsed with a mean twist angle of 5,7°, 

In the case of the l,3-dithia-[3]ferrocenophanes containing platinum in the bridging 

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