515. Phosphonitrilic derivatives. Part II. The structure of trimeric phosphonitrilic chloride
515. Phosphonitrilic derivatives. Part II. The structure of trimeric phosphonitrilic chloride
复制标题
515. 膦腈衍生物。
DOI：
10.1039/jr9600002548
复制
发表时间：
1960
期刊：
影响因子：
--
通讯作者：
D. F. Carroll
中科院分区：
文献类型：
--
作者：
A. Wilson;D. F. Carroll
用二维傅立叶和差分合成及三维最小二乘精修的方法确定了三聚体三聚氰基氯化膦(PNCL)的结构。该结构由离散的分子组成，每个分子由一个几乎平坦的六元环组成，每个环由交替的磷和氮原子组成，每个磷原子上连接着两个氯原子。环内的键长被认为在长度上都是相等的，尽管它们在1.57A到1-61A之间变化。环内的键角从118.33“到120.93”变化，但没有显著差异。在化合物的亚磷腈领域，几乎没有结构上的工作。(PNCL)的晶体结构已由Ketelaar和De Vries计算出来。1Bode无法对(PNBr)进行准确的结构分析，因为无法在电子密度图上观察到氮原子的位置。氯化物三聚体，
The structure of trimeric phosphonitrilic chloride,(PNCl,),, has been determined by means of two-dimensional Fourier and difference syntheses followed by three-dimensional least-squares refinement. The structure is composed of discrete molecules each of which is made up of an almost flat six-membered ring of alternate phosphorus and nitrogen atoms with two chlorine atoms attached to each phosphorus atom. The bond lengths within the ring are considered as all being equal in length although they vary from 1.57 to 1-61 A. The bond angles within the ring vary from 118.33" to 120.93" but are not significantly different. VERY little structural work has been done in the phosphonitrilic field of compounds. The crystal structure of (PNCl,), has been worked out by Ketelaar and de Vries. 1 Bode was unable to carry out an accurate structural analysis of (PNBr,), because the positions of nitrogen atoms could not be observed on electron-density maps. The chloride trimer,