Complete assignment of (super 1)H NMR spectra and structural analysis of intact bacteriochlorophyll c dimer in solution

Article Abstract:

The H NMR spectra of intact farnesyl (3(super 1)R)-bacteriochlorophyll (BChL) c in carbon tetrachloride (CCl4) made by two-dimensional heteronuclear and homonuclear correlation techniques are investigated. It is shown that at room temperature, BChl c in CCl4 forms a stable dimer characterized by two resonances for each individual proton in the NMR spectrum. Molecules in the dimer also undergo slow exchange between two nonequivalent configurations with an exchange rate constant of about 1.8/s.

Magnetic resonance imaging, Carbon tetrachloride

---

NMR relaxation study of the bacteriochlorophyll c in solutions

Article Abstract:

A study is conducted to explore the dynamic properties of bacteriochlorophyll c in terms of relaxation behavior by measuring the NMR spin-lattice relaxation times and spin-spin relaxation times in different organic solvents. The results indicate that BChl c dimer can be used as quantitative measures for evaluating the internal motion of other chlorophyll-related pigment molecules.

All Other Basic Organic Chemical Manufacturing, Industrial organic chemicals, not elsewhere classified, Methanol, Acetone, Bacteria, Photosynthetic, Photosynthetic bacteria, Chemical properties

---

Dynamic exchange properties of the antiparallel bacteriochlorophyll c dimers

Article Abstract:

The substituent effect on the exchange rate of the antiparallel dimer is investigated by the thermodynamic analysis. It is shown that the antiparallel dimer formed from the most abundant homologue can be destabilized kinetically.

Analysis, Chemistry, Physical and theoretical, Physical chemistry, Thermodynamics, Properties, Structure

Similar abstracts:

• Abstracts: Comparative study of conducting polymers by the ESCR model. Cation electrochemical stability in chloroaluminate ionic liquids
• Abstracts: Differential hydration of phenol and phenoxy radical and the energetics of the phenol O-H bond in solution. Solubilization of phenol in an intercalculated surfactant bilayer
• Abstracts: Solvation structure of [Li.sup.+] in concentrated LiP[F.sub.6]-propylene carbonate solutions. Structured modifications between lithium-diborate glasses and melts: Implications for transport properties and melt fragility
• Abstracts: Investigation of the excited state structure of DCM via ultrafast electronic pump/vibrational probe
• Abstracts: Computer simulation of cosolvent effects on hydrophobic hydration. Dynamics of halide ion-water hydrogen bonds in aqueous solutions: Dependence on ion size and temperature

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.