A revision of the structure of (bipyridyl-N,N')-dicyanoplatinum(II)

W. B. Connick; L. M. Henling; R. E. Marsh

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A revision of the structure of (bipyridyl-N,N')-dicyanoplatinum(II)

机译：（Bipyridyl-N，N'）-dicyanoplatinum（II）结构的修订

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In a previous X-ray crystallographic study of crystals of Pt(bpy)(CN)2 (bpy = 2,2'-bipyridine) the planar molecules were reported to be exactly eclipsed, stacked directly on top of one another with a spacing of 3.33 A so as to form a linear Pt…Pt…Pt chain. A reinvestiga-tion shows this structure to be incorrect. The presence of weak intermediate layer lines indicates that the repeat distance along the stacking direction is 6.66 A rather than 3.33 A. Successive molecules within the stack are rotated by 180° and the resulting Pt-atom chain is slightly zigzag with a Pt…Pt…Pt angle of 168.6(1)°. The implications are discussed of the determination and refinement of an apparently satisfactory, although grossly wrong, structure that was based on an incorrect unit cell and an incorrect space group.

机译：在先前的Pt（bpy）（CN）2晶体（bpy = 2,2'-联吡啶）的X射线晶体学研究中，据报道，平面分子完全偏食，彼此直接堆叠，间距为3.33 A，以便形成线性的Pt…Pt…Pt链。重新调查显示此结构不正确。中间层弱线的存在表明沿着堆叠方向的重复距离为6.66 A，而不是3.33A。堆叠中的连续分子旋转180°，生成的Pt原子链略微呈锯齿形，并带有Pt…Pt… Pt角为168.6（1）°。讨论了对基于不正确的晶胞和不正确的空间群的表面上令人满意的（尽管严重错误）结构的确定和改进的讨论。

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《Acta Crystallographica, Section B. Structural Science》 |1996年第5期|共6页
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W. B. Connick; L. M. Henling; R. E. Marsh;
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A revision of the structure of (bipyridyl-N,N')-dicyanoplatinum(II)

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