Structures and Unexpected Dynamic Properties of Phosphine Oxides Adsorbed on Silica Surfaces

Structures and Unexpected Dynamic Properties of Phosphine Oxides Adsorbed on Silica Surfaces
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二氧化硅表面吸附的氧化膦的结构和意外的动态性质

DOI:
10.1002/chem.201404880
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发表时间:
2014
期刊:
Chemistry - A European Journal
影响因子:
--
通讯作者:
Blümel, Janet
Blümel, Janet
中科院分区:
--
文献类型:
--
作者:
Hilliard, Casie R.;Kharel, Sugam;Cluff, Kyle J.;Bhuvanesh, Nattamai;Gladysz, John A.;Blümel, Janet

文献摘要

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吸附在二氧化硅表面上的选定氧化膦的固态核磁共振光谱确定了表面迁移率,甚至是高熔点氧化膦的表面迁移率。加合物 Ph3PO⋅HOSiPh3 和 Cy3PO⋅H2O 的晶体结构表明,与二氧化硅的相互作用涉及 PO 基团与吸附水和表面硅烷醇基团的氢键结合。
Solid‐state NMR spectroscopy of selected phosphine oxides adsorbed on silica surfaces establishes the surface mobilities, even of phosphine oxides with high melting points. Crystal structures of the adducts Ph3PO⋅HOSiPh3and Cy3PO⋅H2O indicate that the interactions with silica involve hydrogen bonding of the PO group to adsorbed water and surface silanol groups.