COORDINATION CHEMISTRY OF SCANDIUM .5. CRYSTAL AND MOLECULAR-STRUCTURE OF TRIS(ACETYLACETONATO)SCANDIUM(III)
COORDINATION CHEMISTRY OF SCANDIUM .5. CRYSTAL AND MOLECULAR-STRUCTURE OF TRIS(ACETYLACETONATO)SCANDIUM(III)
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DOI：
10.1021/ic50122a046
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发表时间：
1973-01-01
影响因子：
4.6
通讯作者：
MELSON, GA
中科院分区：
文献类型：
--
作者：
ANDERSON, TJ;NEUMAN, MA;MELSON, GA
用X射线单晶衍射技术测定了三乙酰丙酮钪（Ⅲ）Sc（CsH_（70）_3）_3的晶体和分子结构。晶体属Pbca空间群，晶胞常数a = 15.38（3），B= 13.73（3），c= 16.72（4）A。计数器数据的最小二乘改进给出了1088个有效反射的最终R因子为0.050。该结构由离散的Sc（C5 H7 O2）3分子组成，与T> 3对称性略有偏差。钪离子的配位环境为畸变八面体，单分子内氧-氧间距为2.715A，配位间距为2.94- 3.09A。钪-氧键长为2.070埃，表明钪（III）离子的半径为0.68埃。
The crystal and molecular structure of tris (acetylacetonato) scandium (lll), Sc (CsH703) 3, has been determined by single-crystal X-ray diffraction technique. The compound crystallizes in the space group Pbca, with cell constants a- 15.38 (3), b= 13.73 (3), c= 16.72 (4) A. Least-squares refinement of the counter data give a final R factor of 0.050 for 1088 significant reflections. The structure consists of discrete Sc (C5H702) 3 molecules with slight deviations from T> 3 symmetry. The coordination environment about the scandium ion is a distorted octahedron with an intrachelate oxygen-oxygen separation of 2.715 A and an interchelate separation of 2.94-3.09 A. The scandium-oxygen bond length, 2.070 A, suggests a radius for the scandium (III) ion of 0.68 A.