Two Molecular-Type Complexes of the Octahedral Rhenium(III) Cyanocluster Anion [Re6Se8(CN)6]4− with M2+ (Mn2+, Ni2+)

Abstract

Two novel octahedral rhenium(III) selenocyanide cluster complexes [(nBu) 4 N] 2 Ni(H 2 O) 5 [Re 6 Se 8 (CN) 6 ]·2H 2 O (1) and [(nBu) 4 N] 2 Mn(H 2 O) 4 [Re 6 Se 8 (CN) 6 ]·2H 2 O (2) have been prepared by the reaction of K 4 [Re 6 Se 8 (CN) 6 ]·3.5H 2 O, (nBu) 4 NBr and Ni(OAc) 2 (or MnSO 4 ) in aqueous solution. The complexes have been structurally solved in the orthorhombic unit cell Pbca with parameters: a = 19.393(2), b = 17.292(2), c = 37.255(4) Å for 1, and a = 19.518(4), b = 17.488(3), c = 37.997(5) Å for 2. The cluster anions and M 2+ form ionic pairs

Structure of a new molecular rhenium cluster complex: trans-{[Ni(NH3)5]2×[Re6Se8(CN)4(OH)2]}·6H2O

“…The lengths of Re-Re (2.6147-2.640 Å), Re-Se (2.5159-2.5395 Å), Re-C (2.090-2.106 Å), and C-N (1.145-1.149 Å) bonds are comparable to the data for other complexes containing the [Re 6 Se 8 (CN) 6 ] 4cluster core [10][11][12][13][14][15][16][17][18][19][20], but are somewhat longer (∼0.02 Å) than Re-Re, Re-Se, Re-O (2.080 Å) bonds in the complexes with the [Re 6 Se 8 (OH) 6 ] 4cluster core [5,21]. Molecular complexes and crystallization water molecules are joined by an extended system of hydrogen bonds.…”

Atomlike Building Units of Adjustable Character: Solid‐State and Solution Routes to Manipulating Hexanuclear Transition Metal Chalcohalide Clusters

“…With the presence of chelating ligands on the metal ions, reactions related to those just discussed can frequently be directed toward the formation of supramolecular assemblies. Quite a number of these have now been realized that incorporate a single, central hexacyanide cluster (45,163,(221)(222)(223)(224)(225)(226). Here, a reliable strategy is to tie up all but one of the coordination sites on the metal ion, as exemplified with the reaction between [Re 4 Os 2 Se 8 (CN) 6 ] 3À and [(Me 6 tren)-Cu(CF 3 SO 3 )] þ [Me 6 tren ¼ tris(2-(dimethylamino)ethyl)amine] in acetonitrile to give the cyano-bridged assembly {Re 4 Os 2 Se 8 [CNCu(Me 6 tren)] 6 } 9þ depicted in Fig.…”

[Re6(μ3-Se)8]2+ Core-Containing Cluster Complexes with Isonicotinic Acid: Synthesis, Structural Characterization, and Hydrogen-Bonded Assemblies

“…cluster core have been reported [13,14]. Several of these compounds utilize [Re 6 (l 3 -Se) 8 (CN) 6 ] 4-as a linker to build polymeric arrays with direct coordination to secondary metal ions [15][16][17][18][19][20][21][22][23]. Other efforts involve incorporating cluster systems into polymers [24], nanoparticles [25], self-assembly structures [26][27][28], and surfaces [29], all for the purpose of integrating the red/nearinfrared luminescence and redox properties of the cluster for functional materials.…”