Cyanidverbrückte Koordinationspolymere aus cis‐ oder trans‐[Ru(^tBuNC)₄(CN)₂] und MnCl₂: Zum Einfluß unterschiedlicher Topologien auf die magnetischen Eigenschaften von Materialien

Abstract

Cyanide Bridged Coordination Polymers from cis‐ or trans‐[Ru(tBuNC)4(CN)2] and MnCl2: About the Influence of Different Topologies on the Magnetic Properties of MaterialsThe reaction of cis‐ or trans‐[Ru(tBuNC)4(CN)2] with MnCl2 as an additional transition metal fragment yields the one dimensional coordination polymers {cis‐[Ru(CN)2(tBuNC)4] MnCl2}n, (1), and {trans‐[Ru(CN)2(tBuNC)4]MnCl2}n, (2), with a different arrangement of the metal centers caused by the different stereochemistry of the starting compounds. The variation of the Ru‐C‐N‐Mn geometry nevertheless leads to significant differences in the magnetic properties of 1 and 2. The coordination polymer derived from trans‐[Ru(tBuNC)4(CN)2] shows a more efficient antiferromagnetic intrachain interaction between the manganese centers compared to the cis‐derivative.

The reaction of manganese carbonyl with tert-butylisocyanide: Synthesis and characterization of cis- and trans-[MnI(tBuNC)4(CN)(CO)]

“…The four isocyanide moieties are all interconnected by new carbon carbon bonds. To the best of our knowledge One of the typical reactions of transition metal cyano complexes is the formation of cyanide bridged coordination polymers [1,4]. So another proof for the identity of 1a or 1b as a compound with a mixed cyanide carbon monoxide coordination sphere would be the reaction with an additional transition metal fragment and the comparison K. Halbauer et al / Journal of Organometallic Chemistry 692 (2007) 1898-1911 of the outcome of this reaction with the products of the same transition metal fragment with an octahedral dicyano complex.…”

“…Found: C,58.65;H,8.28;N,15.55%. m.p Table 3 Crystal and intensity data for the compounds 1b, [3][4][5]7 0.08 · 0.08 · 0.04 0.03 · 0.03 · 0.02 0.04 · 0.04 · 0.02 0.04 · 0.04 · 0.03 0.03 · 0.02 · 0.01 0.02 · 0.02 · 0.02 a (Å ) 16.8870 (4) 13.8640 (4) 10.025 (1) 11.6939 (5) 10.1944(9) 9.1484(5) b (Å ) 9.4207 (3) 20.0112 (3) 10.656 (1) 14.5357 (7) 26.976 (2) 12.1727(6) c (Å ) 18.9648 (5) 23.8270 (6) 14.060 (1) 18.389 (1) 12.709 (1) …”

“…The ruthenium complexes have already been introduced to the formation of cyanide bridged coordination polymers. These reactions demonstrated that the arrangement of metal centers relative to each other can be controlled by the use of the isomeric cis-or trans-complexes, respectively, and that the different isomeric coordination polymers show distinctively different magnetic properties [4]. Nevertheless, cyano complexes of paramagnetic transition metals like e.g.…”

1,4,N-Tri-tert-butyl-2,5-bis-tert-butylimino-1,2,4,5-tetrahydropyrrolo[3,2-b]pyrrol-3-amine

“…The reaction of metal carbonyls and tert-butyl isocyanide leads to metal(II) complexes with a mixed isocyanide-cyanide ligand environment [Ru 3 (CO) 12 : Dö nnecke & Imhof, 2003;; Fe 2 (CO) 9 : Halbauer, Dö nnecke et al, 2006; Mn 2 (CO) 10 : which were used for the construction of coordination polymers (Halbauer, Leibeling & Imhof, 2006). In the reaction of Mn 2 (CO) 10 , we observed the formation of the organic side-product N,N 0 -ditert-butyl-3,5-bis-t-butylimino-4-phenylcyclopent-1-ene-1,2diamine formed from four isocyanide molecules together with an additional CH(Ph) group originating from the solvent toluene.…”

Syntheses, crystal structures and magnetic properties of two heterometallic cyanide-bridged [MII2MnII2] (M = Fe and Os) square complexes

“…To date, only a few such examples have been reported. [32][33][34][35][36][37][38][39][40] Recently, our group has been interested in the investigation of polynuclear compounds with a bridging diamagnetic cyanidometal ligand. [41][42][43][44][45][46][47] In this paper, we report the syntheses, crystal structures, electronic absorption spectroscopy and magnetic properties of two tetra-nuclear cyanide-bridged square complexes [cis-Fe(bpy)…”