In this work, the ¹H and ¹³C NMR spectra of 11 kinds of firstly synthesized N-substituted benzo -15-azacrown-5 and 3 bis-a3acrown ethers in different concentractions were recorded. Individual peaks were assigned. Some structural effects were also discussed.

²³Na ¹⁴N NMR chemical shifts were used to study Na⁺, NH₄⁺ complexes with 18-Ciown-6 in aqueous Solutions. The formation constants for[Na·18-Crown-6]⁺ and[NH₄·18-Crown-6]⁺ were determined using a new method which is different from that developed by Popoy.et.al.

The radicals generated from the interreactions between nitrofluorenone derivatives and aliphatic amines have been studied by ESR spectroscopy. The influence of electron affinity of nitrofluorenone derivatives, ionization potential of aliphatic amines and steic hindrance on their interreactions have been discussed.

In general, the strength of magnetic field used in NMR Imaging is nut very high, such as ¹H Imaging, it is less then 1 Tesla. Stability is about 10^-7 and homogenity of magnetic field is less then 10^-6. Such magnet can be provided by a spherical or a ring solenoid system.This report gives the relation between the field configuration and structure parameters of 4 winding spherical magnet and 8 winding ring magnet by means of computer simulution.It shows that these two system will be similar, if they arc designed appropriately. A ring solenoid magnet system can be used in NMR Imaging equipment instead of the spherical system.

The active free radicals generated in the Photochemical hydrogen abstraction reactions between acridine and aliphatic amines have been studied by the spin trapping technique and ESR method in this paper.The mechanism of hydrogen abstraction reactions have been discussed.

The ¹H NMR Spectra were measured using a pulsed spectrometer at room temperature for solid polybutadiene samples with different chain structure. They are quite distinguishable between each other.The temperature dependence of the chemical shifts and intensity radio of the two decomposed Lorentzian peaks for the star-type branched polybutadienc are reported.
An investigation to carbon black rubber interaction were carried out with high cis-polybutadiene samples added different types of carbon black by measuring EID'S temperature dependence. The results fail to confirm the so called "double layer model", and suggest an homogenization effect on the phase distribution.

The Structure-Independent Method for Separating lanthanide-induced contact and dipolar shift is generalized to the cases Where the coordinate molecules are multidentate ligands.The generalized method is applied to the separation of lanthanide-induced shifte of α-chloro anthraquinone and the assignment of the spectral lines.The results show that the method is useful for the assignment of ¹³C-NMR lines and for determining molecular structure.

NMR spectra of samples in which free radical reactions are taking place may show strongly perturbed intensities for lines belonging to reaction products. This effect is called CIDNP. CIDNP has became an important method for mechanistic investigation of reactions involving short-lived radical intermediates.
In this paper the radical pair theory of CIDNP was qualitatively and quantitatively discussed. The field dependence of the CIDNP effect was analyzed. The triplet mechanism of CIDNP was briefly described and some applications of CIDNP to photochemistry were given.

Assignment technique APT for CH_n carbons of compounds, using spin echo and I modulation is discribed. Two nuclei enhancement techniques by polarization transfer INEPT and DEPT are compared with each other. The examples of signal enhancement for ¹⁵N NMR spectra by INEPT are presented.The advantages and limitations of these methods are discussed.

A discussion of the principle of SQUID, the characteristic of SQUID NMR measurements and the application of SQUID NMR techniques is presented in this paper.

This is a review of 7th Specialized Colloque Ampere (Bucharest, Romania, 9-13 Sep. 1985), in which some of latest developments, new applications of NMR studies and the connection between magnetic resonace and quantum electronics are presented.