Synthesis and crystal structure of the hexakis(thiocyanato-N)-cobaltate(II) anion

Abstract
The synthesis and structure of [H4L1][Co(NCS)6] is described in which the cation is the tetraprotonated form of the tetraamine N,N′-bis(3-aminopropyl)piperazine(L1). The pale red crystals are monoclinic, space group P21/c(no. 14), with a= 7.215(1), b= 8.815(1), c= 21.270(2)Å, β= 91.82(1)° and Z= 2. The final conventional R factor was 0.0372. Cobalt(II) in the [Co(NCS)6]4– ion is co-ordinated octahedrally with an average Co–N bond length of 2.11 Å.

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