First examples of cyano-bridged complexes based on a novel cluster anion [Re12C17(CN)6]6-

Abstract

Two cyano-bridged compounds of novel dodecanuclear cluster anion [Re 12CS17(CN)6] with Ni2+ cations were synthesized, namely, one-dimensional polymer of the composition [{Ni(NH 3)4} {Ni(NH3)5}2Re 12CS17(CN)6] · 7H2O (I) with a chain structure and [Ni(NH3)6]3[{Ni(NH 3)4}3 {Re12CS17(CN) 6}2] · 21H2O (II), containing the anionic dimeric complex [{Ni(NH3)4}3 {Re 12CS17(CN)6}2]6-. The structures of both compounds were established by X-ray diffraction analysis. Crystals I are monoclinic, space group P2/n, a = 15.321(3), b = 12.635(2), c = 15.448(3) Å, β = 100.242(3)°, V = 2942.8(8) Å3, Z = 2. Crystals II are trigonal, space group R3, a = b = 19.7987(14), c = 28.8642(18) Å, V = 9798.6(12) Å3, Z = 3. © Nauka/Interperiodica 2007.