SCANDIUM PICRATE COMPLEX WITH TRANS-1,4-DITHIANE-1,4-DIOXIDE

被引：15

作者：

AYALA, JD ^{[1
]}

VICENTINI, G ^{[1
]}

BOMBIERI, G ^{[1
]}

机构：

[1] UNIV MILAN,IST CHIM FARMACEUT,I-20131 MILAN,ITALY

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1995年 / 225卷 / 1-2期

基金：

巴西圣保罗研究基金会;

关键词：

SCANDIUM PICRATE; INFRARED SPECTRA; X-RAY STRUCTURAL ANALYSIS;

D O I：

10.1016/0925-8388(94)07120-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new polynuclear scandium picrate complex [Sc-3(pic)(3)(TDTD)(1.5)(OH)(5)(H2O)] (pic)(H2O)(5) (pic=picrate) has been obtained by reacting hydrated scandium picrate and trans-1,4-dithane1,4-dioxide (TDTD) in water. The compound has been characterized by infrared spectra and X-ray structural analysis. It crystallizes in a monoclinic cell, space group PZ,, with a=13.528(5), b=26.002(4), c=15.421(3) Angstrom and beta=103.26(3)degrees, Z=4, dc=1.85 g cm(-3). The crystal structure consists of polymeric chains of centrosymmetric hexameric clusters of scandium ions, connected via TDTD bridges. The scandium coordination polyhedrons are formed by oxygens of hydroxyl units, shared between two or three scandium ions, monodentate or bidentate picrates, water molecules and TDTD ligands monodentate or bridging. The scandium coordination numbers are six for four scandium ions and seven for the remaining two. The Sc-Sc separations are: Sc(1)-Sc(2) 3.317(4), Sc(2)Sc(3) 3.392(3), Sc(1)-Sc(2)' 3.430(3), Sc(1)Sc(S)' 3.462(2) and Sc(2)-Sc(2)' 3.460(2) Angstrom. Uncoordinated water molecules and picrate ions complete the crystal structure.

引用

页码：357 / 362

页数：6

共 25 条

[1] THE COMPLEX CHEMISTRY OF SCANDIUM .1. PREPARATION AND PROPERTIES OF SOME SCANDIUM(III) COMPLEXES OF POLYAMINES - X-RAY CRYSTAL-STRUCTURES OF TRI(NITRATO-OO')(2,2'-6',2''-TERPYRIDYL-NN'N''SCANDIUM(III) AND [1,2-BIS(PYRIDINE-ALPHA-CARBALDIMINO)ETHANE-NN'N''N''']-DI-MU-HYDROXO-DI(NITRATO-OO')DISCANDIUM(III) DINITRATE BIS(ACETONITRILE)-6 [J].