Two kinds of ESR spectra measured from VO²⁺ supported on Y-type zeolites after treatments at various roast temperatures (200~700℃) are reported. Results suggest that the VO(H₂0)₄²⁺ ion in the cage of zeolite has two kinds of probable structures. With the increase of roast temperature, the structure (Ⅰ) turned to structure (Ⅱ) gradually. When the roast temperature was increased over 600℃, the structure (Ⅰ) disappeared entirely, and the parameter A_⊥ of structure (Ⅱ) decreased gradually. This implies that the delocalization of the unpaired electron was enhanced. At last, this unpaired electron was lost and the V⁴⁺ was oxidized to V⁵⁺. The bond parameter and reducible energy level were calculated from the spectral parameters.

The ¹³C-NMR spectra of some gibberic acid derivatives were assigned by using J_MOD and DEPT technique in combination with deuterium labelling experiment and some chemical transformation reactions

The active radicals produced in microwave discharge of ten alkanes were studied systematically by combination of spin trapping technique with ESR. The results show that (1) R· and H· are produced in the above systems and can be trapped by PBN, (2) the ratio of [PBN-R]·/[PBN-H]· varies with the distance between PBN and the discharge cavity.

The ²⁹Si NMR behaviour of the framework in divalent metal ion exchanged X-type zeolites was investigated, and the effects of exchange level, dehydration and the type of exchange ions(e.g.Cd²⁺,Cu²⁺,Co²⁺,Mn²⁺,Pb²⁺)on the ²⁹SiMASNMR spectra were discussed. It was found that at the exchange level of about 85%, the zeolite remained in a special state which might be related to a special catalytic activity at this ion exchange level.

The ¹⁹⁵Pt, ³¹P-NMR spectra were recorded for 12 platinum(Ⅱ) complexes containing phenyl cyclopentyl phosphine, phosphite and halogen ligands The influence of solvent,concentration and temperature on the ¹⁹⁵Pt spectra were investigated Lewis base solvents cause ¹⁹⁵Pt resonances moving upfield. For cis-Pt(PPh₃)₂Cl₂ in CH₂Cl₂ solution, ¹⁹⁵Pt concentration coefficient is -17.8ppm/mol, and temperature coefficient is 0. 43ppm/℃. It was found that the ¹⁹⁵Pt, ³¹P chemical shifts of cis-isomers are less than those of trans-isomers, δ_cis < δ_trans, and coupling constants of cis-isomers are greater than those of trans-isomers, (¹Jp_t-P)_cis > (¹Jp_t-p)_trans. Normal halogen dependence was observed for the complexes cis-Pt(PPh₃)₂X₂, the order of δ(¹⁹⁵Pt), δ(³¹P), 1Jpt-p values is Cl > Br > I. In 1, 2-diaminopropane solution the ¹⁹⁵Pt satellite of ³¹P spectrum is the AB part of ABX system, whereas the central peak appears as a singlet.The ₁₉₅Pt, ³¹P spectra of phosphite platinum complexes were also discussed.

The ESR spectra of five reduced heteropolyanions belonging to the Keggin structure are reported in this paper. They are SiV₂Mo₁₀O₄₀^6-, SiV₃Mo₉O₄₀^7-, PV₃MO₉O₄₀^6-, PV₃W₉O₄₀^6- and VV₃W₉O₄₀^6-. At room temperature and pH≤ 3, their spectra contained 8 hfs lines, while at pH=7-8, 8+15 hyperfine lines. Their shape change gradually and finally turned to 8-lines spectrum after a long period of time. The frozen spectra at - 150℃ exhibited complicated 8 line spectra which were successfully simulated based on slightly modified Bleaney's theory.The ESR parameters g_‖ g_⊥ A_‖ A_⊥ were determined and the approximate K, α values were calculated based on DeArmond's theory. The physical meaning of the results are discussed and the failure of observing the 22 hfs lines of V_s species are primarily explained according to the number and degeneracy of the isomers present in the V₃ species.

The urushiol diacetate derived from urushiol have been successfully separated using centrifugal rotational TLC with preparative silica gel thin layer coated by silver nitrate. The method gave rapid separation of a large amount of different kinds of urushiol diacetatcs. Because the silver ion is very sensitive to the degree of unsaturation and configuration of the unsaturated bonds, urushiol di-acetates were well separated. We are satisfied that the five main components were good enough in purity and quantity for NMR study.
The structure and configuration of key components of urushiol were determined successfully by ¹H and ¹³C-NMR. The assignment of resonances for ¹H and ¹³C were defined. In addition, they were confirmed by MS.

The active radicals produced in the photochemical hydrogen abstraction reactions between benzophenone and 2-ary1-1, 3-dithiolan were studied by combination of spin trapping technique with ESR specroscopy. Results show that the homolytic cleavage of C-H on the 2-C (or 4-C, 6-C) could take place, the produced active radicals  CH₂ werestabilized by the conjugation of adjacent sulphur atoms and could be trapped by nitrosodurene (ND) (or 2,4,6-tri-t-butylnitrosobenzene(TBN)) to form two spin adducts the concentration ratio of which was about 1:1.

UV and ¹H NMR of twelve pairs of α-halocinnamamides substituted by aromatic ring are reported. A structure-activity relationship study of a series of(Z) and(E)-N-alkyl-α-halocinnamamides showed that geometrical isomers act differently in the anticonvulsant activty; generally, (Z) derivatives are several times more potent than (E) isomers in the anticonvulsant activity. Their configurations were assigned by their UV γmax and ¹H chemical shifts of protons on the amide group and olefinic bond. The configuration was confirmed by the X-ray diffraction results of one pair of these geometric isomers.

This paper reports the study of DEPT, 2D H-H COSY, C-H COSY and long-range C-H COSY spectra of Clavulactone,a Dolabellane type diterpene.The long-range C-H COSY plays a very important role in the elucidation of H-C-C, H-C-C-C connectivities,therefore it is to some extent an alternative to the insensitive inadequate.

The fundamental principle of MRI is introduced briefly, and Compared with the traditional NMR spectroscopy. The recent research works of MRI are listed, and a diagram of research works system is made by the author. Particular emphases are placed on problems of fast imaging, high spacial resolution and contrast enhancement, etc. The problems of developing the chemical shift imaging and spectroscopic imaging are reviewed in detail. A new field of "Spacial Localized Spectroscopy" is discussed with the author's viewpoint in detail, also.