Ozawa Tadashi C, Kauzlarich Susan M
Department of Chemistry, One Shields Avenue, University of California-Davis, Davis, CA 95616, USA.
Inorg Chem. 2003 May 19;42(10):3183-6. doi: 10.1021/ic034061k.
Synthesis and crystal structure of a new compound, BaCuZn(3)As(3), are reported. Single crystals of BaCuZn(3)As(3) are synthesized via NaCl/KCl flux reaction in a sealed fused silica ampule. Its elemental composition has been determined to be Ba/Cu/Zn/As = 1.03(4):1(0):2.91(6):2.98(3), suggesting BaCuZn(3)As(3) as the chemical formula. The structure of BaCuZn(3)As(3) has been determined by X-ray diffraction. It crystallizes in the orthorhombic Cmcm space group with a = 4.2277(3) A, b = 12.970(1) A, and c = 12.011(1) A at T = 90.7 K, and it exhibits a columnar structure along the a-axis. This structure is isotypic to beta-BaCu(4)S(3) but highly distorted. beta-BaCu(4)S(3) is considered to be a layered structure whereas BaCuZn(3)As(3) is a three-dimensional network.
报道了一种新化合物BaCuZn₃As₃的合成及晶体结构。通过在密封的熔融石英安瓿中进行NaCl/KCl助熔剂反应合成了BaCuZn₃As₃的单晶。其元素组成经测定为Ba/Cu/Zn/As = 1.03(4):1(0):2.91(6):2.98(3)，表明化学式为BaCuZn₃As₃。BaCuZn₃As₃的结构通过X射线衍射确定。它在正交晶系Cmcm空间群中结晶，在T = 90.7 K时，a = 4.2277(3) Å，b = 12.970(1) Å，c = 12.011(1) Å，并且沿a轴呈现柱状结构。该结构与β-BaCu₄S₃同型，但高度扭曲。β-BaCu₄S₃被认为是层状结构，而BaCuZn₃As₃是三维网络结构。
