The stabilities and curing reaction mechanism of 1, 1-isophthaloyl bis (2-methylaziridine)(HX-752) and decanedioyl bis (2-methylaziridine)(PISA) were studied by ¹³C-NMR. HX-752 and PISA can slowly rearrange into oxazolines, and react with water in air at room temperature, respectively.
In the processes of rearrangement and curing reaction, the bond break of N-CH and N-CH₂, in both HX-752 and PISA is different.

2D-NMR experiments of ¹H-¹H COSY,¹³C-¹H COSY, JRES, RETIRES, RELAY and COLOC were applied to the studying of raffinose acetate (1), a model compound used in this research work. The results show that these techniques are useful for structure elucidation of natural glycosides. It is noted that COLOC is a powerful tool for the determination of sequence and interglycosidic linkages of sugar moieties.

The structures of the reaction product of p-(α-bromoacrylamido) benzene sulfonic acid and amino add (glytine,β-aminopropionic add, L-alanine and D, L-phenylalanine) are reported to be the derivatives of aziridine, ¹H and ¹³C NMR spectra of these reaction products are recorded. In assigning the spectral lines different NMR techniques are employed. The configurations of aziridine derivatives are confirmed. Based on the differences in NMR spectra, the relationship between the configuration and the nature of N-substituent is discussed.

A novel and simple ¹H-NMR method for determination of enantiomeric purity, BETR, is studied. BETR (Broad Peak Elimination by T₂ Relaxation) method is one that eliminates the broad peak of chiral shift reagent by CPMG pulse sequence in the ¹H-NMR determination. In the application of this technique to the determination of enantiomeric purity of 2'-hydroxy-2-benzyIoxy-1.1'-binaphthyl (1), in the presence of Eu(hfc)₃, the results are as follows. Increasing the molar ratio of Eu(hfc) l,the resonance peaks of methene in R isomer shift to the lower rede faster than that in S isomers but the chemical shift difference between wo protons of methene in S isomer is greater than that in R isomer. Due to Bloch-Siegert effect, their value:are dependent on the magnetic field strengrh.

The amount of end double bonds of polyoxyethylene-oxypropylene copolyether terminated with allyl group has been determined by ¹H-NMR. It contains directly quantitative measurement and quantitative measurement of adding internal standard.

In the aqueous micellar solution of hexadecyltrimethyl-ammonium bromide (CTAB) and non-aqueous micellar solution of polyoxyethylene 4-lauryl ether (Brij 30), the solubilization of many kinds of short chain aromtic hydrocarbons and their derivatives were studied by high resolution proton nuclear magnetic resonance spectroscopy (¹H-NMR). The detailed results of the solubilization position of different kinds of solubilizates in two kinds of micelle had been obtained. The study will be very profitable to go further into the mechanism of the solubilization.

ESR technique has been used to study the interaction of reduced V₂O₅/SiO₂ catalyst with a variety of adsorbed molecules. It has been shown that the V⁴⁺ ions with tetrahedral coordination are active centers. Their interaction with adsorbed molecules, such as CH₃OH, HCl, and CH₃CN etc, leads to the formation of octahedrally coordinated VO²⁺ complexes on the surface of the catalyst. The calculation of bonding parameters of surface complexes formed indicates that the unpaired electron is mostly confined to the vanadium ions d-orbital. The adsorption of oxygen at 77 K leads to the formation of various oxygen radicals. But no change had been found for the coordinated state of V⁴⁺ ions after adsorption of ethylene or propylene molecules.

A synchronous driving and controlling circuit is described in this paper. 2D chemical shift isotropy and anisotropy correlation spectra of powdered soilds have been obtained with this flipping angle device attached to a Bruker WP-80 NMR spectrometer.

On the basis of synthesising a series of ZSM-5/11 molecular sieves, the state of TBA⁺, the templating agent, within the framework of the samples were investigated by high-resolution solid-state ¹³C-NMR technique. The position and configuration of TBA⁺ within the channel of ZSM-5 and ZSM-11 molecular sieves were discussed and the product during the decomposition of TEA^-, n-butylamine, was discovered. Thereby, it was illustrated that TBA⁺ and n-butylamine both are the templating agents of ZSM-5 molecular sieve in the system with not very high SiO₂/Al₂O₃. From which ZSM-11 would be obtained.

In this paper, the PMR spectra of L-serine and its complex with Lanthanum (La) at different pH values are presented. Program PANIC was used to simulate these spectra and their chemical shifts and coupling constants were obtained. The pH dependence of their chemical shifts and coupling constants was shown. The proportions of the three rotational isomers of L-serine were calculated. The conformations of L-serine and its La complex were discussed.

Here are introduced two methods to measure the ESR spectra of the erythrocyte membrans, one is using the freeze-dried samples at the room temperature, and the other one is the freezing fresh samples at the low temperature. All these spectra are anisotropic with the orientation of the magnetic field, it maybe is produced by the magnetic interaction among the membrans. The signal of the g=2.0062 is stimulated by the superoxidized ion radicals.

The ¹H NMR and ¹³C NMR of seven new β-elemene derivates were studied in detail. The effects of the substituting groups on the chemical shifts of ¹H and ¹³C were discussed. We could deduce that the stable conformations of the compounds.

The structure of Na₂O-B₂O₃-V₂O₅ glasses is studied by the ⁵¹V NMR technique. The results show that,
1) as R<0.5+K, the NaV₃O₈, NaVO₃ and NaVO₃-B units are formed successively with the increasing of R.
2) as R=0.5 + K, all the V₂O₅ units are transformed into NaVO₃ and NaVO₃-B units.
3) as R>0.5 + K, the number of NaVO₃-B units decreases accordingly as the increasing of nonbridge-oxygen atoms in borate units, and it can be guessed that the boron atoms in NaVO₃-B are 4-coordinated.

This paper describes a system in which image of biological specimen is obtained from its ESR signal. In order to reduce microwave electric heating in biological specimen effectively and obtain the imaging information of specimen conveniently, the microwave frequency in the system is arranged at L-band and the cavity resonator is replaced by an one-turn plane coil. In this system the magnetic field scanning is controlled and the data collection of ESR signal is completed synchronously by IBM-PC computer. The ability of measurement on weak signal with noise is increased by repeating scanning, collection data, add and average. Finally, the image of specimen is obtained by reconstruction method of convolution filtering back-projection. This system also has the unexpensive feature and it is easy to build.