Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Ruthenium cryptates with an unusual selectivity for nitrate
AU - Baker, Naomi C. A.
AU - Fletcher, Nicholas C.
AU - Horton, Peter N.
AU - Hursthouse, Michael B.
PY - 2012
Y1 - 2012
N2 - The synthesis of two new tripodal complexes [Ru(L-3)](PF6)(2) and [Ru(L-4)](PF6)(2), encapsulating a ruthenium(II) cation, has been successfully achieved and the products fully characterized, including by X-ray structural determination. The smaller cavity, built around a tris(2-aminoethyl) amido scaffold demonstrated only moderate and predictable interactions with a range of anions and no significant spectroscopic change with nitrate, chloride and bromide, although dihydrogen phosphate did result in an almost stoichiometric precipitation. The expansion of the cavity to include the more rigid 1,3,5-benzenetricarbonylamide group creates a larger cavity, which shows a decrease in the emission on the introduction of chloride, bromide, hydrogen sulfate and nitrate salts, with the H-1 NMR titrations giving a surprisingly high binding affinity for nitrate over the smaller and simpler halides.
AB - The synthesis of two new tripodal complexes [Ru(L-3)](PF6)(2) and [Ru(L-4)](PF6)(2), encapsulating a ruthenium(II) cation, has been successfully achieved and the products fully characterized, including by X-ray structural determination. The smaller cavity, built around a tris(2-aminoethyl) amido scaffold demonstrated only moderate and predictable interactions with a range of anions and no significant spectroscopic change with nitrate, chloride and bromide, although dihydrogen phosphate did result in an almost stoichiometric precipitation. The expansion of the cavity to include the more rigid 1,3,5-benzenetricarbonylamide group creates a larger cavity, which shows a decrease in the emission on the introduction of chloride, bromide, hydrogen sulfate and nitrate salts, with the H-1 NMR titrations giving a surprisingly high binding affinity for nitrate over the smaller and simpler halides.
KW - TRIPLE-HELICAL ARRAY
KW - ANION-BINDING
KW - POLYPYRIDINE COMPLEXES
KW - METAL-COMPLEXES
KW - SOLAR-CELLS
KW - RECOGNITION
KW - LIGAND
KW - RECEPTOR
KW - CAGE
KW - COORDINATION
U2 - 10.1039/c2dt12446g
DO - 10.1039/c2dt12446g
M3 - Journal article
VL - 41
SP - 7005
EP - 7012
JO - Dalton Transactions
JF - Dalton Transactions
SN - 1477-9226
IS - 23
ER -