boron(B)
2.The calculated structures of all SubPcs with the center of boron (B), aluminum (Al) or beryllium (Be) are cone-shaped. The angles of the isoindole unit rotating around the axis through its alpha carbons are about 26° ~ 28° in the derivatives with the B center, and they are 40? and 34.8° respectively when the centers are Al and Be.
4.Changes in concentrations of boron (B) and magnesium (Mg) in the ovary (fruitlet),rind and pulp of fruit were investigated throughout fruit development of parthenocarpic Kamei satsuma mandarin (Citrus unshiu Marc.) and self-pollinated Egan 1 tangerine (C.reticulata Blanco).The results showed as follows:1) B concentrations in the ovary of Kamei were at high levels before flowering and at full bloom,and decreased after flowering,whereas that of Egan 1 was relatively low at full bloom,thereafter significantly increased.No significant differences were observed in Mg changes in the ovary (fruitlet) between the two cultivars,which presented decreasing trends after flowering.2) Minor changes of B concentrations in the rind of the two cultivars were detected,remarkable changes were found for B in the pulp,which came to the peak values during the stage of fruit enlargement.Mg concentrations were relatively high in the rind and pulp of the two cultivars during early fruit development,and presented obviously declining trends during the middle and late stage of fruit development.
9.Study on NMR Spectroscopy of Proton and Boron-11 of Diarylboron Chelates containing B—N Coordinate Bond and Some Triboranes
10.The boron-rich phase in Nd-Fe-B magnet was studied by means of HVEM, Mossbauer spectroscopy, X-ray diffraction and magnetic measurements.
