An infrared and 31P magic angle spinning nuclear magnetic resonance study of the adsorption of PCl3 and OPCl3 on silica
An infrared and 31P magic angle spinning nuclear magnetic resonance study of the adsorption of PCl3 and OPCl3 on silica
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DOI：
10.1021/la00015a026
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发表时间：
1994-03
期刊：
影响因子：
3.9
通讯作者：
B. Morrow;S. Lang
中科院分区：
文献类型：
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作者：
B. Morrow;S. Lang
Bogatyrev和Chuiko * 1研究了吸附在二氧化硅上的PCI 3的红外光谱，他们观察到在3650和3500 cm-1附近由于扰动的孤立表面硅烷醇而出现两个宽的IR谱带。虽然没有具体的归属，他们认为两种不同的结构可能是由物理吸附的PCI 3和SiOH之间的相互作用产生的。另外一个IR谱带在605 cm-1处被报道，这是由于PCI 3与SiOH配位的反对称PCI伸缩模式。然而，对于纯的PCI 3，反对称和对称的PCI 3伸缩模2位于515和487 cm-1之间，并且对于任何分子复合物都不会预期如此大的高波数偏移。3
The infrared spectrum of PCI3 adsorbed on silica has been studied by Bogatyrev and Chuiko,* 1 who observed the appearance of two broad IR bands due to perturbed isolated surface silanols near 3650 and 3500 cm-1. Although no specific attribution was specified for either band, they assumed that two different structures could result from the interaction between physically adsorbed PCI3 and SiOH.An additionalIR band was reported at 605 cm-1 which was attributed to the antisymmetric PCI stretching mode of PCI3 coordinated to SiOH. However, for pure PCI3 the antisymmetric and symmetric PCI3 stretching modes2 lie between 515 and 487 cm-1, and such a large high-wave-number shift would not be expected for any molecular complex. 3