2D NMR methods, such as heteronuclear multiple-quantum coherence (HMQC) spectroscopy, heteronuclear correlation (HETCOR) spectroscopy, homonuclear
Hartmann-Hahn (HOHAHA) spectroscopy, total correlation spectroscopy (TOCSY), rotating frame Overhauser experiment spectroscopy (ROESY), heteronuclear single-quantum coherence (HSQC) spectroscopy, and heteronuclear multiple bond coherence (HMBC) spectroscopy, have been employed in lignin structure characterization [44, 84-86].
Accurate binding energies of the homonuclear
diatomic molecules carbon, nitrogen, oxygen and fluorine," J.
Both proton 2-D COSY and homonuclear
j-resolved spectroscopy are offered along with T1 and T2 relaxation experiments.
Davis, "MLEV-17-based two-dimensional homonuclear
magnetization transfer spectroscopy," Journal of Magnetic Resonance (1969), vol.
Strong heteronuclear bonds between two different metallic species influence the formation of the alloy structure, while the strongest homonuclear
bonds of one species form the core and the other metal forms the shell of the structure.
Double quantum filtered homonuclear
correlation spectroscopy (DQF-COSY), gradient selected heteronuclear single quantum coherence (gHSQC), and heteronuclear multiple bond coherence (gHMBC) were used for [sup.1]H and [sup.13]C NMR chemical shift assignments (w = weak correlation peak).
He begins with the atomic properties of one-electron and two-electron atoms, then explains the atomic properties and periodic trends of atoms with more than two electrons, homonuclear
diatomic molecules, gaseous alkali metal haloids with ionic bonds, other heteronuclear diatomic molecules with polar covalent bonds, the Lewis cubical atom model, molecular orbital calculations on heteronuclear diatomic molecules (as well as hybridization and estimation of net atomic charges from calculated electron densities), homonuclear
diatomic species of certain second-period elements, structure and bonding (including in simple compounds of the Group 14 elements and those in other Groups), and electron deficient molecules.
The current state-of-the-art technique to detect metabolites such as GABA, whose MRS peaks are overshadowed by much larger peaks in conventional MRS, is the homonuclear
MEGA-PRESS J-editing sequence (Mescher et al.
The second section offers 12 chapters on recent developments, including high-frequency dynamic nuclear polarization, homonuclear
and heteronuclear dipolar recoupling, and relaxation studies of solid biopolymers.
D., and Vaughan, G., 2006, "Constitutional Self-Selection of [2x2] Homonuclear
Grids from a Dynamic Mixture of Copper(I) and Silver(I) Metal acomplexes," Inorg.
Finally, 2-D homonuclear
correlation experiment, COSY (COrrelated SpectroscopY) was used to achieve the expected correlation between the adjutant protons and to prove that the signal assignments were correct.
Routine [.sup.1]H and [.sup.13]C spectra along with homonuclear
correlation spectroscopy (COSY), heteronuclear single-quantum correlation (HSQC), and gradient-assisted heteronuclear multiple bond correlation (gHMBC) data were obtained using a Varian Mercury 300 NMR spectrometer operating at a frequency of 300.13 MHz for proton.