CAS Key Laboratory of Functional Materials and Devices for Special Environments, Xinjiang Technical Institute of Physics & Chemistry, CAS; Xinjiang Key Laboratory of Electronic Information Materials and Devices, 40-1 South Beijing Road, Urumqi 830011, China.
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.
Molecules. 2019 Jul 30;24(15):2763. doi: 10.3390/molecules24152763.
Borates have been regarded as a rich source of functional materials due to their diverse structures and wide applications. Therein, zincobrates have aroused intensive interest owing to the effective structural and functional regulation effects of the strong-bonded zinc cations. In recent decades, numerous zincoborates with special crystal structures were obtained, such as CsZnBO and AZnBOX (A = Na, K, Rb, NH; X = Cl, Br) series with KBeBOF-type layered structures were designed via substituting Be with Zn atoms, providing a feasible strategy to design promising non-linear optical materials; KZnBO and BaNaZn(BO)(BO) with novel edge-sharing [BO] tetrahedra were obtained under atmospheric pressure conditions, indicating that extreme conditions such as high pressure are not essential to obtain edge-sharing [BO]-containing borates; BaKZn(BO)(BO) and BaKZn(BO)(BO) comprise two kinds of isolated polyborate anionic groups in one borate structure, which is rarely found in borates. Besides, many zincoborates emerged with particular physicochemical properties; for instance, BiZnOBO and BaZnBOF are promising non-linear optical (NLO) materials; ZnBO and KZnBO possess anomalous thermal expansion properties, etc. In this review, the synthesis, crystal structure features and properties of representative zincoborates are summarized, which could provide significant guidance for the exploration and design of new zincoborates with special structures and excellent performance.
硼酸盐由于其多样的结构和广泛的应用，被认为是功能材料的丰富来源。其中，由于强键合的锌阳离子对结构和功能的有效调节作用，锌硼酸盐引起了人们的浓厚兴趣。近几十年来，通过用锌原子取代铍原子，获得了具有特殊晶体结构的多种锌硼酸盐，如 CsZnBO 和 AZnBOX（A = Na，K，Rb，NH；X = Cl，Br）系列具有 KBeBOF 型层状结构的化合物，为设计有前途的非线性光学材料提供了可行的策略；在常压条件下获得了具有新颖的共用边[BO]四面体的 KZnBO 和 BaNaZn(BO)(BO)，表明获得含有共用边[BO]的硼酸盐并不需要极端条件如高压；BaKZn(BO)(BO)和 BaKZn(BO)(BO)在一个硼酸盐结构中包含两种孤立的多硼酸盐阴离子基团，这在硼酸盐中很少见。此外，许多锌硼酸盐具有特殊的物理化学性质；例如，BiZnOBO 和 BaZnBOF 是有前途的非线性光学（NLO）材料；ZnBO 和 KZnBO 具有异常的热膨胀性能等。本文综述了代表性锌硼酸盐的合成、晶体结构特征和性质，为探索和设计具有特殊结构和优异性能的新型锌硼酸盐提供了重要指导。
