首页|Anion-induced differential assembly and structural transformation of supramolecular coordination cages
Anion-induced differential assembly and structural transformation of supramolecular coordination cages
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The intimate host-anion interactions will regulate thermodynamics and kinetics in the self-assembly of cationic cages mimicking biological counterparts.Herein,we report construction and transformation of three Pd(Ⅱ)-based metal-organic cages(MOCs)depending on different anions.Stoichiometric conversions of the lantern-shaped MOC-34 into either octahedral MOC-35 or tricapped trigonal prism MOC-36 are induced by BF4-or NO3-,respectively.MOC-36 is kinetically favored and can undergo quantitative con-version to the thermodynamically preferred MOC-35 upon heating,accelerated by excess BF4-to motivate dissociative dynamics of Pd-vertices and lower activation barrier of cage transformation.The guest encap-sulation behaviors of MOC-35 and MOC-36 have also been tested.These results manifest a significance of host-anion dynamics beyond complementary anion template,shedding light on the understanding of intricate anion recognition in nature.
MOE Laboratory of Bioinorganic and Synthetic Chemistry,Lehn Institute of Functional Materials,School of Chemistry,Sun Yat-sen University,Guangzhou 510006,China
Institute of Environmental Research at Greater Bay Area,Guangzhou University,Guangzhou 510006,China
State Key Laboratory of Organometallic Chemistry,Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences,Shanghai 200032,China
NKRD Program of China国家自然科学基金国家自然科学基金LIRTP of Guangdong Pearl River Talents Program
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