نتایج جستجو برای: adamantane
تعداد نتایج: 671 فیلتر نتایج به سال:
In the crystal structure of the title compound, C(18)H(25)NO, mol-ecules are linked via O-H⋯N hydrogen bonds, forming chains parallel to the c axis. Additional weak N-H⋯O inter-actions stabilize the crystal packing. The adamantane cage consists of three fused cyclo-hexane rings in almost ideal chair conformations, with C-C-C angles in the range 107.9 (10)-111.3 (11)°.
We demonstrate the use of a simple pH swing to control the selection of one of three different guests from aqueous solution by a coordination cage host. Switching between different guests is based on the fact that neutral organic guests bind strongly in the cage due to the hydrophobic effect, but for acidic or basic guests, the charged (protonated or deprotonated) forms are hydrophilic and do n...
In the title coordination polymer, {[Zn(C(11)H(15)O(3))(2)(C(10)H(8)N(2))(C(11)H(16)O(3))]·H(2)O}(n), the Zn(II) ion is five coordinated by two N atoms from two 4,4'-bipyridine (4,4'-bpy) mol-ecules and three O atoms from two 3-hy-droxy-adamantane-1-carboxyl-ate anions (L) and one 3-hy-droxy-adamantane-1-carb-oxy-lic acid (HL) mol-ecule. The resulting coordination polyhedron is a near regular Z...
Unelquivocal samples of the l-adamantyl (l-Ad) and 2-Ad radicals have been prepared in a matrix of adamantane (Ad)l by the simultaneous deposition of atomic sodium, 1or 2-bromoadamantane, and adamantane at 77 K. The EPR spectrum of the l-Ad radical contrary to previous reports has a clearly resolved hyperfine structure that can be analyzed in terms of the solution parameters of Krusic et al., a...
b-Cyclodextrin (b-CD) forms inclusion complexes (ICs) with adamantane-modified benzoxazines (2 benzoxazine and 3 benzoxazine). These benzoxazines can readily penetrate into the CD’s hydrophobic cavity, causing turbidity of their solutions, from which fine crystalline powders are obtained. We characterized these complexes by powder X-ray diffraction, C and C CP/MAS NMR spectroscopies, DSC, and T...
Novel heteroleptic iridium complexes containing the 1-substituted-4-phenyl-1H1,2,3-triazole (phtl) cyclometalating ligand have been synthesized. The 3+2 Huisgen dipolar cycloaddition method (‘click’ chemistry) was utilized to prepare a class of bidentate ligands (phtl) bearing different substituents on the triazole moiety. By using various ligands (phtl-R1 and pytl-R2) (R1=adamantane, methyl an...
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