Phosphine and phosphine oxide groups in metal-organic frameworks detected by P K-edge XAS
OPEN ACCESS
Loading...
Author / Producer
Date
2015-02-07
Publication Type
Journal Article
ETH Bibliography
yes
Citations
Altmetric
OPEN ACCESS
Data
Rights / License
Abstract
Phosphine metal–organic frameworks (P-MOFs) are crystalline porous coordination polymers that contain phosphorus functional groups within their pores. We present the use of X-ray absorption spectroscopy (XAS) at the P K-edge to determine the phosphine to phosphine oxide ratio in two P-MOFs with MIL-101 topology. The phosphorus oxidation state is of particular interest as it strongly influences the coordination affinity of these materials for transition metals. This method can determine the oxidation state of phosphorus even when the material contains paramagnetic nuclei, differently from NMR spectroscopy. We observed that phosphine in LSK-15 accounts for 72 ± 4% of the total phosphorus groups and that LSK-12 contains only phosphine oxide.
Permanent link
Publication status
published
External links
Editor
Book title
Journal / series
Volume
17 (5)
Pages / Article No.
3326 - 3331
Publisher
Royal Society of Chemistry
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Organisational unit
03746 - Van Bokhoven, Jeroen A. / Van Bokhoven, Jeroen A.