نتایج جستجو برای: adamantane
تعداد نتایج: 671 فیلتر نتایج به سال:
In the title compound, 2C(10)H(18)N(+)·CO(3) (2-), the adamantan-1-aminium cation forms three N-H⋯O hydrogen bonds to three carbonate ions, resulting in a layer parallel to (001) with the adamantane groups located on its surface so that adjacent layers form only C-H⋯H-C contacts. The carbonate anions occupy special positions of 32 symmetry, whereas the adamantan-1-aminium cations occupy special...
All trans retinal was attached to both the primary face and the secondary face of beta-cyclodextrin via a Schiff base linkage, analogous to that in rhodopsin. The new models were evaluated and compared with n-butylamine retinylidene Schiff base for their rates of hydrolysis, and factors that influence such rates. Competition studies using adamantane carboxylate demonstrated the kinetic trap the...
We performed a first principles total energy investigation on the structural, electronic, and vibrational properties of adamantane molecules, functionalized with amine and ethanamine groups. We computed the vibrational signatures of amantadine and rimantadine isomers with the functional groups bonded to different carbon sites. By comparing our results with recent infrared and Raman spectroscopi...
Oxidative chlorination of ArSbCl2 (1) with SO2Cl2 provided ArSbCl4 (2), the base hydrolysis of which gave rise to the arylstibonic acid (ArSb)4O6(OH)4 (3) having an adamantane type structure. The intramolecularly coordinating substituent Ar = 6-diphenylphosphinoacenaphth-5-yl- modulates the Lewis acidity of 1-3 and prevents extensive aggregation.
A four-folded azidation of tetrakis(4-iodophenyl)methane and -adamantane leads to stable organic azides, but yet energetic materials, measured by differential scanning calorimetry (DSC). The rigid and symmetrical structures can be useful for new polymer and nanomaterial developments in material sciences as well as bioconjugations, after 1,3-dipolar cycloaddition reactions with terminal alkynes ...
Short nucleic acid sequences specific to oncogene targets such as bcl-2, bcr-abl, and c-myc have been shown to exhibit specific anti-cancer activity in vitro through antigene or antisense activity. Efficient in vivo delivery of oligonucleotides remains a major limitation for the therapeutic application of these molecules. We report herein on the preparation of transferrin-modified nanoparticles...
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