低维量子反铁磁性材料因具有自旋液体等新奇量子现象以及与高温超导的相关性，近年来迅速成为研究前沿和热点。然而，其新奇量子现象和异常特性的起源、本质以及机制，却还未被完全理解。因此，急需更多、更完美的新型低维量子反铁磁性材料模型进行深入研究。本项目申请人通过直接反应已经合成出目前一维磁性最优异的S=5/2链状结构。在此研究基础上，本项目拟通过间接脱水法可控合成更完美、一维量子磁性更优异的一维量子反铁磁性3d过渡金属链体系。而且，相比通过反应直接合成，此脱水间接合成方法更具可控性和普适性。本项目研究拟揭示微弱氢键减弱链间磁交换作用J’的显著作用，阐明单水分子脱水控制获得单原子链接以增强链内磁交换作用J，并最终合成出一维量子磁性优异的一维量子反铁磁性链化合物的可行性和有效性。

Low dimensional quantum antiferromagnetic (AFM) materials are of great interest recently due to their potential novel quantum phenomena like spin liquid and relation to high temperature superconductivity. However, the origin, nature, and mechanism of the novel quantum phenomena has not been understood very well. Thus, more ideal new low dimensional quantum AFM models need be urgently discovered for intensive investigation. The applicant of this project has discovered a nearly ideal spin S = 5/2 AFM chain with best one-dimensional (1D) magnetism. Based on the previous research, this project aims to experimentally realize more ideal 1D quantum AFM systems by indirect dehydration approach. This indirect dehydration approach is more controllable and universal, compared to direct synthesis by direct reaction of raw materials. This project plan to reveal the significant effect of weak hydrogen bonding on reducing interchain interaction J’, and illustrate the feasibility and validity of realizing 1D AFM chain compound with excellent 1D quantum magnetism by dehydration of single water molecule with enhanced intrachain interaction J by obtaining single atom as bridging ligand.