Preparation crystal and molecular structure, and properties of tetrakis(ferrocenecarboxylato)bis(tetrahydrofuran)dicopper(II). A structure containing both eclipsed and staggered ferrocenyl fragments

μ2-Acetato-κ2O:O′-tris(μ2-ferrocenecarboxylato-κ2O:O′)bis[(N,N-dimethylformamide-κO)copper(II)]

“…1). The arrangement of the ferrocenecarboxylate groups is therefore different from that in the centrosymmetric compound tetrakis(ferrocenecarboxylato)bis(tetrahydrofuran)copper(II) reported by Churchill et al (1985), in which the four ferrocene units are arranged in a clockwise mode. There is also a noticeable difference between the conformations of the coordination of the Cu II and carboxylate O atoms of (I) and the Churchill complex.…”

“…Moreover, compounds containing ferrocenyl units always show some unusual properties and have potential applications in the ®eld of materials science, such as molecular sensors (Beer, 1992), molecular magnets (Miller & Epstein, 1994) and nonlinear optical materials (Long, 1995). Dinuclear copper(II) complexes with two different kinds of carboxylate groups still remain rare, especially ones with bulky carboxylate groups like ferrocenecarboxylate (Churchill et al, 1985), which may be due to the existence of evident steric hindrance. We report here the synthesis and crystal structure of the title dimeric copper(II) carboxylate, (I), with ferrocenecarboxylate and acetate groups.…”

Synthesis, Crystal Structures and Properties of Tetrametallic Complexes: [M2(phen)4(FCA)2](ClO4)2·(H2O)2 (M=Zn or Co, phen=1,10‐phenanthroline, FCA=anion of 3‐ferrocenyl‐2‐crotonic acid)

“…Thermal ellipsoids are the 50% probability level. And hydrogen atoms are omitted for clarity.average 0.2038(6) nm and 2 from 0.2034(4) to 0.2059(3) nm, average 0.2043(4) nm] and the dimensions of the cyclopentadienyl (C p ) rings are consistent with those reported in the literature [35][36][37][38][39][40][41]. The two C p rings are planar and nearly parallel (tilt angle…”

μ-Acetato-tri-μ-ferrocenecarboxylato-bis[(N,N-dimethylformamide)copper(II)]

“…For related literature, see: Chung & Wei (1999); Churchill et al (1985); Erre et al (1985); Maspoch et al (2002); Porter & Doedens (1984); Viossat et al (2005); Chen et al (2006).…”