Biomedical subjects
Publications and source records attributed to Tomislav Friscić.
An imidazolium-based task-specific ionic liquid containing an ethylaminediacetic acid moiety readily results in the formation of 2:1 octahedral chelate complexes with aqueous Co2+, Ni2+, and Cu2+.
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The reaction between pairs of enantiomeric cocrystals involving caffeine or theophylline and a chiral cocrystal former has been investigated by liquid-assisted grinding: we demonstrate two different outcomes for such cocrystal-cocrystal reactions.
We report a method to enforce face-to-face stacking of the aromatic rings of organic semiconductor molecules in the solid state that employs bifunctional hydrogen-bond donors, in the form of semiconductor cocrystal formers, to align semiconductor building blocks.
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A linear template in the form of a bipyridine has been developed and is shown to direct a single-crystal-to-single-crystal [2 + 2] photodimerisation of a dicarboxylic acid.
A metal organic framework with two different nodes (circle and square) and a structure related to one of the 20 known 2-uniform nets has been constructed using an organic building unit that codes for multiply fused nodes.
A ladder-like coordination polymer involving a dinuclear Zn Schiff-base complex possesses organic linkers that undergo [2+2] photodimerisation in the solid state.
[reaction: see text] Cocrystallization of trans-1,2-bis(4-pyridyl)ethylene (4,4'-bpe) with eight members of a homologous series of phloroglucinols 1a-h yields molecular solids 2(1a-h).2(4,4'-bpe) with components held together by four O-H...N hydrogen bonds. In each case, the molecules assemble to form a discrete four-component assembly with olefins preorganized for a [2 + 2] photodimerization. UV irradiation of each member in the series of solids produces rctt-tetrakis(4-pyridyl)cyclobutane (4,4'-tpcb), stereospecifically, in up to 100% yield.
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The title dimeric complex, bis[micro-2,2'-[hexane-1,6-diylbis(nitrilomethylidyne)]diphenolato-1:2kappa(4)O,N:N',O']dicopper(II),[Cu(2)(C(20)H(22)N(2)O(2))(2)], has been investigated by single-crystal X-ray diffraction, by thermogravimetric analysis and differential scanning calorimetry, and also by FT-IR spectroscopy. Different synthetic and crystallization procedures gave crystals which were quite different in appearance, and it was initially thought that these were different polymorphic forms. Subsequent structure determination showed, in fact, serendipitous preparation of crystals in the P4(1) space group by one method and in space group P4(3) by the other. In these enantiomorphic structures, the Cu atoms have a distorted flattened tetrahedral coordination, with Cu-N and Cu-O distances in the ranges 1.954 (4)-1.983 (4) and 1.887 (4)-1.903 (4) A, respectively.