Synthesis and crystal structure of NaTi2O4: A new mixed-valence sodium titanate
Synthesis and crystal structure of NaTi2O4: A new mixed-valence sodium titanate
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新型混价钛酸钠NaTi2O4的合成及晶体结构
DOI：
10.1016/0022-4596(89)90268-5
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发表时间：
1989
影响因子：
3.3
通讯作者：
H. Takei
中科院分区：
文献类型：
--
作者：
J. Akimoto;H. Takei
一种新的钛酸钠NaTi2O4，呈黑色，针状，晶体结构为正交晶系铁酸钙型结构，空间群Pnam，a = 9.2615（10）B= 10.7357（7），c= 2.9556（3），Z = 4。结构由单晶X射线研究确定，并对1856个观察到的反射进行了修正，得到常规值R = 0.029和Rw = 0.034。骨架结构由“双金红石”链组成，Ti 3+和Ti 4+随机占据两种类型的Ti位。
A new sodium titanate, NaTi2O4, is black in color, has a needle shape, and crystallizes in the orthorhombic calcium ferrite-type structure, space groupPnamwitha= 9.2615(10) Å,b= 10.7357(7)Å,c= 2.9556(3) Å, andZ= 4. The structure was determined from a single-crystal X-ray study and refined to the conventional valuesR= 0.029 andRw= 0.034 for 1856 observed reflections. The framework structure is built up from “double rutile” chains, and two types of Ti sites are randomly occupied by Ti3+and Ti4+ions.