Birk Torben, Sørensen Henning Osholm, Bendix Jesper
Inorganic Chemistry, Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark.
Acta Crystallogr C. 2005 May;61(Pt 5):m231-3. doi: 10.1107/S0108270105008693. Epub 2005 Apr 23.
Two new chromium(V)-nitride complexes with a coordination sphere completed by bidentate ligands have been synthesized and structurally characterized. Bis(2-methylquinolin-8-olato)nitridochromium(V), [Cr(C10H8NO)2(N)], has the coordination sphere completed by an equatorial N2O2 set of ligators. The compound crystallizes with the five-coordinate complexes at sites with twofold rotational symmetry and all Cr-N bond directions aligned with the crystallographic b axis. Nitridobis(2-sulfidopyridine N-oxide)chromium(V), [Cr(C5H4NOS)2(N)], crystallizes with the molecules on general positions and has an equatorial S2O2 coordination environment, which is unprecedented among nitride complexes of the first-row transition metals. In both systems, Cr[triple-bond]N bonds are short at ca 1.56 A.
合成并表征了两种由双齿配体完成配位球的新型氮化铬（V）配合物。双（2-甲基喹啉-8-醇根）氮基铬（V），[Cr(C₁₀H₈NO)₂(N)]，其配位球由一组赤道面的N₂O₂配体完成。该化合物在具有二重旋转对称性的位点以五配位配合物形式结晶，且所有Cr-N键方向与晶体学b轴对齐。氮基双（2-硫代吡啶N-氧化物）铬（V），[Cr(C₅H₄NOS)₂(N)]，在一般位置上的分子结晶，具有赤道面的S₂O₂配位环境，这在第一行过渡金属的氮化物配合物中是前所未有的。在这两个体系中，Cr≡N键短，约为1.56 Å。
