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Anilate Tethered Neutral Tetrahedral Pd(II) Cages Exhibiting Selective Encapsulation of Xylenes and Mesitylene
Author(s) -
Yadav Ashok,
Sarkar Meghamala,
Subrahmanyam Sappati,
Chaudhary Atul,
HeyHawkins Evamarie,
Boomishankar Ramamoorthy
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201905852
Subject(s) - mesitylene , chemistry , hydrocarbon , xylene , o xylene , raw material , porosity , host–guest chemistry , molecular recognition , binding energy , organic chemistry , benzene , toluene , molecule , supramolecular chemistry , physics , nuclear physics
The design of porous materials for the recognition of multiple hydrocarbons is highly desirable for the energy‐efficient separation and recognition of chemical feedstock. Herein, three new iso‐structural porous discrete metal–organic cages of formula {[Pd 3 (N i Pr) 3 PO] 4 (R‐AN) 6 } (R‐AN=anilate linkers) for the selective recognition of substituted aromatic hydrocarbons are reported. The tetrahedral cages 1 , 2 , and 3 containing anilate, chloranilate, and bromanilate linkers exhibited selective encapsulation of mesitylene, o ‐xylene, and p ‐xylene, respectively, over other analogous aromatic hydrocarbons. These selective encapsulations were driven by the variations in the portal diameters present at each of these cages and their interactions with the hydrocarbon guests. These observations are supported by mass spectrometry, NMR studies, and theoretical binding‐energy calculations.