配位化学近期进展

经历了五十年代复兴时期以后,无机化学与有机化学、物理化学、生物化学、固体化学等学科的相互渗透和交叉,形成了近代配位化学。它的发展对元素分离提取技术的进一步改进,新颖催化反应及高效高选择性催化剂的发现,

介绍一本内容新颖的教材《现代配位化学》

由厦门大学化学系徐志固教授编著，蔡启瑞、张乾二教授主审的《现代配位化学》一书已由化学工业出版社于1987年12月正式出版。此书比较全面、系统地介绍了配位化学的基础理论、重要成果和发展现况。全书共75万多字，分十三章。书中作者大量引用了国外无机化学及有关的名著和现刊，同时也反映了国内。

Engineering the coordination structure of Cu for enhanced photocatalytic production of C_(1) chemicals from glucose

Photocatalytic decomposition of sugars is a promising way of providing H_(2),CO,and HCOOH as sus-tainable energy vectors.However,the production of C_(1) chemicals requires the cleavage of robust C−C bonds in sugars with concurrent production of H_(2),which remains challenging.Here,the photo-catalytic activity for glucose decomposition to HCOOH,CO(C_(1) chemicals),and H_(2) on Cu/TiO_(2)was enhanced by nitrogen doping.Owing to nitrogen doping,atomically dispersed and stable Cu sites resistant to light irradiation are formed on Cu/TiO_(2).The electronic interaction between Cu and nitrogen ions originates valence band structure and defect levels composed of N 2p orbit,distinct from undoped Cu/TiO_(2).Therefore,the lifetime of charge carriers is prolonged,resulting in the pro-duction of C_(1) chemicals and H_(2) with productivities 1.7 and 2.1 folds that of Cu/TiO_(2).This work pro-vides a strategy to design coordinatively stable Cu ions for photocatalytic biomass conversion.

Studies on a Traditional Chinese Medical Prescription Ma Xing Shi Gan Tang by Bio-coordination Chemistry

本文报道 pH 电位滴定法测出麻黄碱与生石膏中的 Cu^(2+)、Fe^(2+)、Zn^(2+)、Mn^(2+)离子形成的 ML 及 ML_2型络合物的稳定常数。滴定曲线显示甘草酸与上述四种金属离子也能分别形成不同稳定程度的络合物。用麻黄碱加甘草酸和上述四种金属离子配制成的模拟麻杏石甘汤和单纯生石膏煎剂与麻性石甘汤一样均有使家兔退热的效果,与对照组比较均有显著性差异(P<0.05);而用麻黄碱加甘草酸配制成的溶液无退热效果。作者认为应从生物—配位无机化学的多金属—多配体体系的观点去研究某些传统中医药方剂。