A Neutral, Triple‐Helical, Trinuclear, Oxo‐Centered Mixed‐Valence Iron Complex

Abstract

COMMUNICATIONSprovided evidence for the existence of such order also in the solution state.[''] We foresee applications of precision self-asof ever increasing complexity from systems of components of advanced synthetic and informational sophistication. Efforts on using all 5725 reflections. Hydrogen atoms were placed in calculated positions on the appropriate N atoms and on the first four C atoms of the alkyl chain.All non-hydrogen atoms were refined anisotropically and hydrogen atoms were refined by using a riding model (C-H = 0.97. N-H = 0.86 A) with U,,,(H) = 1 .2UEq(C, N). Full-matrix least squares refinement of247 parameters gave R, = 0.1701 [R, = 0.1523 on 1>2a(l)data] and S =1.723. Although the sembly to the targeted fabrication of organized states of matter our part are now being directed towards the inclathration of complementary species in the channel voids of 3,, as well as the elaboration of the periphery for the exploitation of this effective means of generating hexagonal order.[1] a) M. Mdscal.

Discrete Tetrairon(III) Cluster Exhibiting a Square-Planar Fe4(μ4-O) Core: Structural and Magnetic Properties

“…Thus, the Fe 2 (μ-O), 24,25 Fe 3 (μ 3 -O), 26,27 Fe 4 (μ 4 -O), 28,29 Fe 5 (μ 5 -O), 30,31 and Fe 6 (μ 6 -O) 32,33 motifs have been observed in the solid-state structures of iron coordination compounds.…”

New Materials Derived from Heterocyclic Systems

“…Five-membered rings with two or more nitrogen atoms such as pyrazole [66], imidazole [67], triazole [68], benzotriazole [69], or tetrazole [70] have also participated in this type of assemblies. Figure 27.20 shows the hexameric assembly 74 involving a copper metal and a ligand bearing an imine and pyridine and imidazole rings [71].…”

Acetatos homo e heterotrinucleares de ferro: um experimento para o laboratório de química de coordenação

“…Variando-se a velocidade de varredura, os alunos puderam obter uma correlação linear entre a corrente de pico catódica e a raiz quadrada da velocidade de varredura, a mesma situação para o caso da redução reversível obtida com soluções de hexacianoferrato(III) de potássio. 32 Normalmente essa relação é considerada como uma prova da reversibilidade de um processo eletroquímico, porém também é válida para processos irreversíveis.…”