Published January 2015 | Version v1
Journal article Metadata-only

Crystal structure of {[La2(CNCH2COO)6(H2O)4 ]H2O}n complex

Creators

  • 1. Inst. of Chemistry of Academy of Sciences of Moldova, 3, Academiei str., Chisinau MD-2028, Chisinau (Moldova, Republic of)
  • 2. Inst. of Applied Physics of Academy of Sciences of Moldova, 5, Academiei str., Chisinau, MD-2028, Chisinau (Moldova, Republic of)

Description

The lanthanum(III) cyanoacetate complex of formula {[La2(CNCH2COO)6(H2O)4]H2 O}n (1), has been prepared and characterized by X-ray diffraction analysis. Compound crystallizes in the triclinic centrosymmetric space group P-1 (No.2), a=8.997(5) Angstrom, b=9.251(5) Angstrom, c=9.728(5) Angstrom, α=67.849(5)degrees, β=84.224(5)degrees, γ=81.351(5) degrees. Single-crystal X-ray diffraction study reveals that crystals of 1 exhibits one-dimensional coordination polymer structure, which is composed of cyanoacetate bridged lanthanum (III) ions. The O9 coordination surrounding of La cation is completed by oxygen atoms of six carboxylate ligands that are coordinated in the bidentate bridging and tridentate-chelating bridging mode and two water molecules. The cations are bridged in a polymeric chain by four exo-bidentate cyanoacetate ligands or through μ2-O function of two other chelato-bridgind cyanoacetate ligands. The La***La separation along the polymer is equal to 4.754(3) Angstrom and 4.608(2) Angstrom. (authors)

Availability note (English)

Available online at http://www.cjm.asm.md/

Additional details

Identifiers

URL
http://www.cjm.asm.md/;

Publishing Information

Journal Title
Chemistry Journal of Moldova
Journal Volume
10
Journal Issue
1
Journal Page Range
p. 52-56
ISSN
1857-1727

INIS

Country of Publication
Moldova, Republic of
Country of Input or Organization
Moldova, Republic of
INIS RN
47102009
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ACETIC ACID; COMPLEXES; COORDINATION NUMBER; CRYSTAL STRUCTURE; CRYSTALS; LANTHANUM; LANTHANUM IONS; LIGANDS; POLYMERS; RARE EARTHS; X-RAY DIFFRACTION
Descriptors DEC
CARBOXYLIC ACIDS; CHARGED PARTICLES; COHERENT SCATTERING; DIFFRACTION; ELEMENTS; IONS; METALS; MONOCARBOXYLIC ACIDS; ORGANIC ACIDS; ORGANIC COMPOUNDS; RARE EARTHS; SCATTERING

Optional Information

Notes
22 refs., 3 tabs., 2 figs.