The title compounds, [Co（H2O）6]（OVA）2·2H2O 1, [Ni（H2O）6]（OVA）2·2H2O 2 and [Zn（OVA）2·2H2O] 3 （HOVA = o-vanillic acid = 2-hydroxy-3-methoxybenzoate）, were synthesized and characterized by single-crystal X-ray diffraction, elemental analysis, IR and TGA. Compounds 1 and 2 are both of triclinic with space group P1. The metal atom coordinated by six water molecules displays a slightly distorted octahedral configuration. Interestingly, the carboxyl group from HOVA ligand does not coordinate to the metal atom. Correspondingly, compound 3 belongs to the monoclinic system, space group C2/c. Each zinc（Ⅱ） atom exhibits a distorted four-coordinated tetrahedral geometry. Two monodentate carboxyl groups link one zinc（Ⅱ） atom to form a mononuclear molecule. The structure feature is different from that of compounds 1 and 2, which could be attributed to the different coordinated numbers and radii of Co（Ⅱ）, Ni（Ⅱ） and Zn（Ⅱ） atoms.
总结自大马士革铜工艺建立以来,电化学工作者利用化学镀技术围绕该工艺而开展的一系列相关研究,介绍了应用化学镀沉积镍三元合金防扩散层和化学镀铜种子层的研究以及离子束沉积法(Ion ized C lus-ter Beam,ICB)形成Pd催化层后的化学镀铜技术和超级化学镀铜方法.简要叙述化学镀铜技术在超大规模集成电路中的应用,总结化学镀铜技术的研究进展,并指出了今后的发展方向.
A series of Ln（tmtaa）（Htmtaa）·CH2Cl2 （Ln = Sm, Tb, Er and Yb） complexes were prepared and characterized by infrared spectra, mass spectra and molecular electronic spectroscopy as well as DSC measurement. A sandwich structure containing all the eight nitrogen atoms of tmtaa and Htmtaa was proposed for these complexes. X-ray photoelectron spectra （XPS） of these complexes revealed that four nitrogen atoms of both tmtaa and Htmtaa were chemically equivalent to each other, respectively. The acidic hydrogen of Htmtaa did not bind specifically to any nitrogen atom of Htmtaa, but was shared by all the four nitrogen atoms. The magnetic properties of these complexes were found to be in good agreement with their theoretical values.
