Synthesis and structure of new eight-membered Si–O–λ5σ4–P heterocycles

Synthesis and structure of new eight-membered Si–O–λ5σ4–P heterocycles
复制标题

新型八元Si–O–λ5σ4–P杂环的合成与结构

DOI:
10.1039/a803283a
复制
发表时间:
1998
期刊:
影响因子:
--
通讯作者:
H. Grützmacher
H. Grützmacher
中科院分区:
--
文献类型:
--
作者:
Y. Vaugeois;R. Jaeger;Joëlle Levalois;A. Mazzah;M. Wörle;H. Grützmacher

文献摘要

被引文献

相似文献

Bu2tSi(OLi)21 与 PhPOCl2 或 Ph2Si(OLi)2 与 POCl3 以 1:1 摩尔比反应,分别形成 1,3,3,7-tetraoxa-2,6-disila-4,8-​​λ5σ4-diphosphacyclooctanes 5 和 9。 X射线结构分析显示5在椅子构象中包含八元Si2O4P2环。环中的 Si-O (1.65 A) 和 P-O 1.57 A 键长在典型范围内;末端 PO 氧中心位于轴向位置,并且相对于中心 Si2O4 平面呈反方向。
The reaction of Bu2tSi(OLi)21 with PhPOCl2 or of Ph2Si(OLi)2 with POCl3 in a 1:1 molar ratio leads to the formation of the 1,3,3,7-tetraoxa-2,6-disila-4,8-λ5σ4-diphosphacyclooctanes 5 and 9, respectively. An X-ray structure analysis shows 5 to contain an eight-membered Si2O4P2 ring in the chair conformation. The Si–O (1.65 A) and P–O 1.57 A bond lengths in the ring lie within the typical range; the terminal PO oxygen centres are in an axial position and oriented trans with respect to the central Si2O4 plane.