Synthesis and Structure of PbUO2(CH2C(CH3)COO)4

被引：2
|
作者：
Serezhkina, L. B. [1 ]
Grigor'ev, M. S. [2 ]
Shimin, N. A. [1 ]
Serezhkin, V. N. [1 ]
机构：
[1] Samara Natl Res Univ, Samara 443086, Russia
[2] Frumkin Inst Phys & Electrochem, Moscow 119071, Russia
来源：
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2019年 / 64卷 / 03期
关键词：
uranyl compounds; methacrylates; X-ray diffraction;
D O I：
10.1134/S0036023619030173
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A new compound with the formula PbUO2(mac)(4), where mac is the methacrylate ion CH2C(CH3)COO-, has been synthesized and studied by X-ray diffraction and IR spectroscopy. The equatorial plane of a UO7 pentagonal bipyramid contains the oxygen atoms of four anions, three of which are coordinated to the uranyl ions monodentately, and one is coordinated bidentately, forming mononuclear complexes [UO2(mac)(4)](2-). Each lead ion is bound to eight oxygen atoms of five methacrylate ions of three such complexes. As a result, lead ions bond uranium-containing complexes into electroneutral chains [PbUO2(mac)(4)], which are the main structural units of crystals. The different roles of the four crystallographically nonequivalent methacrylate ions in the crystal structure determine the crystal-chemical formulas of the chains as A'AB(01)B(11)(B-21)(2), where A' = Pb2+; A = UO22+; B-01, B-11, and B-21 = mac. The chains are linked by the system of hydrogen bonds to form a framework. The effect of the nature of R2+ cations on the structure of methacrylate uranylates is considered.
引用
收藏
页码：342 / 350
页数：9
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