Synthesis and Structures of Compounds Based on Chalcocyanide Tetranuclear Rhenium Clusters: Bonding Cluster Complexes by diene‐Bridged Cu^II Units

Design of Cyano‐Bridged Coordination Polymers Based on Tetrahedral Rhenium Cluster Cyanide Complexes and 3d Transition Metals

“…[33] It is very interesting to note that both these compounds have a compositions similar to that of 25, but their structures are sufficiently different. Whereas compound 25 has a chainlike polymeric structure, 26 and 27 are molecular (Figure 21) 4+ cationic units, the structure of which differs noticeably from the corresponding cation in 25.…”

“…the (1,2,3) cationic unit by the nitrogen atom of a CN ligand (Figure 17). [28] [33] can be presented as the result of coordination of a CN ligand to a [Cu(NH 3 )(dien)] 2+ unit with a square-planar structure. The structures of 22 and 23 have only one distinction: in the case of 22 gem-CN ligands are bonded to two cationic units, whereas in 23 these bridging ligands have an ortho orientation ( Figure 18).…”

“…[33] The anionic unit of this structure is provided by the complex [{Cu 3 (dien) 4 2-anionic units to construct the polymeric structure. The negative charge of this onedimensional network is compensated by K + cations.…”

New cyano-bridged complexes based on tetrahedral rhenium chalcocyanide clusters, Cu2+ cations, and polydentate amines

“…21 Investigation of the Cu 2+ -dien-[Re 4 Q 4 (CN) 12 ] 4-system (dien is diethyl enetriamine) showed that both molecular and polymeric structures are produced depending on the composition of the solution. 20 In continuation of these studies, we exam ined the formation of such complexes in relation to the dentation of the N donor ligand coordinated to the Cu atom at a constant Cu : ligand ratio of 1 : 1. We used en, dien, and triethylenetetraamine (trien) as the chelating ligands.…”

“…14, 16 The use of polydentate ligands offers additional possibilities for controlling the dimensionality of the cyano bridged compounds. [17][18][19][20][21] In recent years, we have carried out systematic studies of the synthesis of cyano bridged coordination polymers based on the tetrahedral rhenium cluster complexes [Re 4 Q 4 (CN) 12 ] 4-(Q = S, Se, or Te) and 3d metal com plexes with N donor ligands. The reactions of copper ammonium complexes with K 4 [Re 4 Q 4 (CN) 12 ] (Q = S, Se, or Te) were demonstrated to give chain struc tures, 15 whereas the reaction of the copper chelate complex Cu(en) 2 Cl 2 (en is ethylenediamine) with K 4 [Re 4 Te 4 (CN) 12 ] in an ammonium medium af forded a molecular compound.…”