CAJ | 학술논문

具有非对称中心结构的硼酸盐Bi2ZnB2O7由固相反应法在低于700℃下制备得到.X射线单晶结构分析表明,该化合物以正交空间群Pba2结晶,晶体学参数为:a=1.0819(2)nm,b=1.1023(2)nm,c=0.4890(1)nm,Z=4.其晶体结构中包含分别由[BO3]3-和[BO4]5-组成的[B2O5]4-和[B2O7]8-基团,它们被[ZnO4]四面体通过共用O原子的方式连接成二维2∞[ZnB2O7]6-层,这些层由Bi3+离子进一步结合形成三维网.红外光谱证实了[BO3]3-和[BO4]5-基团的存在,粉末倍频效应测试表明,其强度为KDP(KH2PO4)的4倍,UV漫反射光谱表明该物质吸收边约为360 nm.
구유비대칭중심결구적붕산염Bi2ZnB2O7유고상반응법재저우700℃하제비득도.X사선단정결구분석표명,해화합물이정교공간군Pba2결정,정체학삼수위:a=1.0819(2)nm,b=1.1023(2)nm,c=0.4890(1)nm,Z=4.기정체결구중포함분별유[BO3]3-화[BO4]5-조성적[B2O5]4-화[B2O7]8-기단,타문피[ZnO4]사면체통과공용O원자적방식련접성이유2∞[ZnB2O7]6-층,저사층유Bi3+리자진일보결합형성삼유망.홍외광보증실료[BO3]3-화[BO4]5-기단적존재,분말배빈효응측시표명,기강도위KDP(KH2PO4)적4배,UV만반사광보표명해물질흡수변약위360 nm.
A non-centrosymmetric borate, Bi2ZnB2 O7, has been prepared by solid-state reactions at temperature below 700℃. The single-crystal X-ray structural analysis showed that it crystallizes in the orthorhombic space group Pba2 with a=1.0819(2)nm,b=1.1023(2)nm,c=0.4890(1)nm,Z =4. It has a three dimensional (3D) structure in which [B2O5]4- and[B2O7]8-groups are bridged by [ZnO4]6-tetrahedra through sharing O atoms to form 2D2∞[ZnB2O7]6-layers that are further bridged by Bi3+cations giving rise to the final 3D framework. The IR spectrum confirms the presence of both[BO3]3-and [BO4]5- groups, second-harmonic-generation measurements display a response of about 4 × KDP (KH2PO4), and UV-vis diffuse reflectance spectrum shows an absorption edge at about 360 nm.