Identification of different Cr(III) nta complexes:: crystallisation of Cs2[Cr2(nta)2(μ-OH)2]•4H2O in two space groups

被引：35

作者：

Visser, HG ^{[1
]}

Purcell, W ^{[1
]}

Basson, SS ^{[1
]}

机构：

[1] Univ Orange Free State, Dept Chem, ZA-9300 Bloemfontein, South Africa

来源：

POLYHEDRON | 1999年 / 18卷 / 21期

关键词：

synthesis; identification; crystal structure; chromium (III); nitrilotriacetate dimer;

D O I：

10.1016/S0277-5387(99)00198-9

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Cs-2[Cr-2(nta)(2)(mu-OH)(2)]. 4H(2)O (nta=nitrilotriacetate) crystallises in two different space groups due to a slight variation in pH of the reaction mixtures. The structures of Cs-2[Cr-2(nta)(2)(mu-OH)(2)]. 4H(2)O have been determined from three-dimensional X-ray diffraction data. The complex crystallises in the tetragonal, 14(1)/a (I) and monoclinic, P2(1)/c (II), space groups. The two hydroxo groups bridge the two Cr centres with OH-Cr-OH angles of 81.5(3)degrees (I) and 82.08(10)degrees (II), respectively. The tetradentate nta ligand completes the octahedral geometry around the Cr centre. The Cr-OH bonds are 1.942(7) and 1.961(6) Angstrom for (I) and 1.987(2) and 1.991(1) Angstrom for (II). The Cr-N and Cr-O-(av) are 2.048(9) and 1.967(8) Angstrom for (I) and 2.061(3) and 1.975(2) Angstrom for (II), respectively. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：2795 / 2801

页数：7

共 20 条

[1]

BRANDENBURG K, 1998, VISUAL CRYSTAL STRUC

[2] X-RAY SCATTERING FACTORS COMPUTED FROM NUMERICAL HARTREE-FOCK WAVE FUNCTIONS [J].

CROMER, DT ;

MANN, JB .

ACTA CRYSTALLOGRAPHICA SECTION A-CRYSTAL PHYSICS DIFFRACTION THEORETICAL AND GENERAL CRYSTALLOGRAPHY, 1968, A 24 :321-&

[3] SYNTHESIS AND CHARACTERIZATION OF MU-CARBOXYLATO-O,O-MU-HYDROXO CHROMIUM(III) COMPLEXES CONTAINING AMINO-ACIDS, ACETATE AND NICOTINATE AS BRIDGING LIGANDS - CRYSTAL-STRUCTURE OF K2[CR(NTA)(OH)(ACETATE-O,O)CR(NTA)].4H2O [J].

GREEN, CA ;

KOINE, N ;

LEGG, JI ;

WILLETT, RD .

INORGANICA CHIMICA ACTA, 1990, 176 (01) :87-93

[4] EFFECT OF TEMPERATURE, PRESSURE, ACIDITY AND SOLVENT ON AN AQUO ION EXCHANGE REACTION [J].

HUNT, HR ;

TAUBE, H .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1958, 80 (11) :2642-2646

[5] SOLUTION STRUCTURE OF [CRIII(L)(O-O)]N COMPLEXES (L = NITRILOTRIACETATE, N,N-BETA-ALANINEDIACETATE - O-O = MALONATE, OXALATE, ACETYLACETONATE, 2H2O) AND CHARACTERIZATION OF [CR(NTA)(OH)]22- BY DEUTERON NMR-SPECTROSCOPY [J].

KOINE, N ;

BIANCHINI, RJ ;

LEGG, JI .

INORGANIC CHEMISTRY, 1986, 25 (16) :2835-2841

[6] KINETIC-STUDY OF THE REACTION OF MESO-TETRAKIS (PARA-TRIMETHYLAMMONIUMPHENYL)PORPHINATODIAQUACOBALT(III) WITH THIOCYANATE AND IODIDE-IONS IN AQUEOUS-SOLUTION [J].

LEIPOLDT, JG ;

PURCELL, W ;

MEYER, H .

POLYHEDRON, 1991, 10 (12) :1379-1383

[7] STUDIES ON THE SYNTHESIS OF METAL COMPLEXES .4. THE COBALT(III) COMPLEXES OF AMMONIATRIACETIC ACID [J].

MORI, M ;

SHIBATA, M ;

KYUNO, E ;

OKUBO, Y .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1958, 31 (08) :940-944

[8] SUBSTITUTION-REACTIONS OF TETRACARBOXYPHENYLPORPHINATOCOBALTATE(III) WITH THIOCYANATE AND PYRIDINE AS A FUNCTION OF PH [J].

PASTERNACK, RF ;

PARR, GR .

INORGANIC CHEMISTRY, 1976, 15 (12) :3087-3093

[9]

Sheldrick G.M., 1997, SHELXTL-97

[10]

SHELDRICK GM, 1993, SHELXL93 PROGRAM REF

← 1 2 →