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John F. Gallagher Richard D. A. Hudson A. R. Manning 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(1):28-30
The title compound, [Fe(C5H5)(C10H7O2S)], an important precursor en route to organometallic donor–π–acceptor systems, forms dimers in the solid state through cyclic intermolecular carboxylic acid O—H⃛O hydrogen bonds, graph set R(8) [O⃛O 2.661 (2) Å and O—H⃛O 175°]. Intermolecular CCp—H⃛πCp interactions between the unsubstituted cyclopentadienyl (Cp) rings and Cthiazole—H⃛πCp interactions link neighbouring molecules into a three-dimensional network [C⃛Cg 3.753 (7) Å and C—H⃛Cg 156°, and C⃛Cg 3.687 (3) Å and C—H⃛Cg 129°; Cg is the ring centroid]. Intramolecular C—H⃛O interactions are present, graph set S(7) [C⃛O 2.925 (3) Å and C—H⃛O 120°, and the closest C—H⃛Sthienyl contact has a C⃛S distance of 3.058 (2) Å]. 相似文献
146.
Abstract The first and second protonation constant (logβ111,logβ121 ) of the metal-ligand complex Gadolinium(III)-diethyltriamine-pentaacetic acid (DTPA) have been determined to be 2.27 and 1.52 at 25 °C and I = 0.1. A technique in which the three complexes (H2Gd-DTPA, HGd-DTPA?1, Gd-DTPA?2) are separated according to their relative polarity is utilized. An inductively coupled plasma-atomic emission spectrometer (ICP-AES) is used to determine the relative concentrations of each species by monitoring the gadolinium concentration. 相似文献
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Manning TJ Rhodes E Land M Parkman R Sumner B Lam TT Marshall AG Phillips D 《Natural product research》2006,20(6):611-628
Marine Natural Products (MNPs), such as bryostatin 1, are exposed to a range of physical and chemical conditions through the life cycle of the host organism. These include exposure to sunlight, oxidizing and reducing agents, cation binding, and adsorption to reactive metal oxide surfaces. Using Fourier Transform-Ion Cyclotron Resonance (FT-ICR), Matrix Assisted Laser Desorption Ionization Mass Spectrometry (MALDI-MS), UV/Vis absorbance spectroscopy, and molecular modeling, we studied the impact of UV light, TiO2, I2, and reaction with FeCl3 on the structure of bryostatin 1. Our results demonstrate that natural conditions transform bryostatin to a number of structures, including one with a molar mass of 806 Da, which we have previously identified in the sediment collected from the Gulf of Mexico. To date, at least 20 different structures of bryostatin have been reported in the literature. This work suggests that these variations may be products of the chemical environment in which the bryozoa Bugula neritina resides and are not the result of genetic variations within Bugula. 相似文献
148.
Hicks-Bruun M. M. Bruun J. H. Manning A. B. Shepherd F. M. E. Laupichler F. 《Analytical and bioanalytical chemistry》1933,95(1-3):101-102
Analytical and Bioanalytical Chemistry - 相似文献
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MK Hossain-Ibrahim K Rezajooi JK MacNally MRJ Mason AR Lieberman PN Anderson 《BMC neuroscience》2006,7(1):8-21