Additions and corrections
MnII(N3)2(pyrazine). A 2-D layered structure consisting of ferromagnetically coupled 1-D {Mn(μ-1,1-N3)2}n chains
Jamie L. Manson, Atta M. Arif and Joel S. Miller
Chem. Commun., 1999, 1479.
The crystal structure reported as published was incorrectly refined in space group Cc. Due to significant X-ray absorption of the thin plate-shaped crystal used for the structural investigation, it was necessary to apply a different weighting scheme of the hk0 indices during the refinement procedure. By doing so it became readily apparent that the final agreement factors were much improved and suggested that C2/c was indeed the correct space group. We thank the persistence of Professor G. Girolami for pointing this out. Accordingly, the revised space group C2/c and the corrected CIF file has been deposited with the CCDC. Please note the following corrections to the text:
p. 1479
The MnN6 octahedron is markedly distorted, with Mn–Nazido distances ranging from 2.232(2) to 2.236(2) Å (averaging 2.234 Å) and two equivalent Mn–Npyz distances of 2.297(2) Å while cis-N–Mn–N angles range from 80.39(7) to 99.60(7)°. The N–N distances of the azido ligand range from 1.145(3) to 1.185(3) Å (averaging 1.165 Å) and reflects typical double bond character, and as such, the N(1)–N(2)–N(3) bond angle is 178.9(3)°.
p. 1480
These angles are 97.9(5) and 99.60(7)° for 1 and hence suggest ferromagnetic coupling.
Notes and references
Crystal data for C4H4MnN8: C2/c, Z = 2, R(F) = 0.0392, R(wF) = 0.0990, and GOF = 1.031.