SYNTHETIC, STRUCTURAL, AND SPECTROSCOPIC STUDIES ON SOLIDS CONTAINING TRIS(DIPICOLINATO) RARE-EARTH ANIONS AND TRANSITION OR MAIN-GROUP METAL-CATIONS

被引：172

作者：

BRAYSHAW, PA

BUNZLI, JCG

FROIDEVAUX, P

HARROWFIELD, JM

KIM, Y

SOBOLEV, AN

机构：

[1] UNIV WESTERN AUSTRALIA,DEPT CHEM,ADV MINERALS & MAT PROC RES CTR,NEDLANDS,WA 6009,AUSTRALIA

[2] UNIV LAUSANNE,INST CHIM MINERALE & ANALYT,CH-1005 LAUSANNE,SWITZERLAND

来源：

INORGANIC CHEMISTRY | 1995年 / 34卷 / 08期

关键词：

D O I：

10.1021/ic00112a019

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The synthesis and basic characterisation are reported for 85 new solids of the general formula [ML(x)][Ln-(dipic)(3)] . nH(2)O (M = Cr or Co; L = urea, ammonia, and various amines; Ln = La-Lu, plus Y; dipic = pyridine-2,6-dicarboxylate). Syntheses of some seven Cs-3[Ln(dipic)(3)] and [N(C2H5)(4)](3)[Ln(dipic)(3)] species are also given. Low-temperature luminescence measurements on a variety of these compounds and full X-ray crystallographic structure determinations for Cs-3[Eu(dipic)(3)]. 9H(2)O (orthorhombic, space group C222(1); a = 10.165(2), b = 18.164(4), c = 18.724(4) Angstrom; Z = 4; R(1) = 0.041 for 1573 ''observed'' reflections) and [Co(sar)]p[Eu(dipic)(3)]. 13H(2)O (monoclinic, space group P2(1)/n; n = 10.611(4), b = 26.500(10), c = 17.583(7) Angstrom; beta = 91.97(3)degrees; Z = 4; R(1) = 0.037 for 7695 ''observed'' reflections) are described to illustrate the range and complexity of the physical properties of these new materials. Both Cr(IlI) and Co(III) act as very efficient quenchers of the normally strong [Eu/Tb(dipic)(3)](3-) luminescence, though in at least one system it appears that Cr(III) may act to transfer excitation energy to Ln excited states from its own higher levels while simultaneously deactivating the Ln ion through its lower (doublet) states.

引用

页码：2068 / 2076

页数：9

共 40 条

[1]

Riehl J.P., Richardson F.S., Chem. Rev., 86, (1986)

[2]

Metcalf D.H., Bolender J.P., Driver M.S., Richardson F.S., J. Phys. Chem., 97, (1993)

[3]

Dong W., Flint C.D., J. Chem. Soc., Faraday Trans., 88, (1992)

[4]

Murray G.M., Sarrio R.V., Peterson J.R., Inorg. Chim. Acta, 176, (1990)

[5]

Bunzli J.-C.G., Froidevaux P., Harrowfield J.M., Inorg. Chem., 32, (1993)

[6]

Jezowska-Trebiatowska B., Legendziewicz J., Strek W., Excited States of Transition Elements, (1989)

[7]

Sabbatini N., Guardigli M., Lehn J.-M., Coord. Chem. Rev., 723, (1993)

[8]

Albertsson J., Acta Chem. Scand., 24, (1970)

[9]

Faithfull D.L., Harrowfield J.M., Ogden M.I., Skelton B.W., Third K., White A.H., Aust. J. Chem., 45, (1992)

[10]

Harrowfield J.M., Lu W.-M., Skelton B.W., White A.H., Aust. J. Chem., 47, (1994)

← 1 2 3 4 →