Synthesis and Molecular Structure of A Bimetallic Salen Complex Containing Zn and La: A Disordered Nitrate Group Dancing between Two Metal Centers
来源期刊：JOURNAL OF RARE EARTHS2005年第3期
论文作者：Leon Dyers Jr Donald Van Derveer Xiu R Bu
Key words：bimetallic complex; zinc; lanthannm; rare earths;
Abstract: A new bimetallic complex containing Zn and La was prepared from a salen ligand possessing methoxyl groups at the 3, 3'-positions. The structural feature is that one of nitrate groups is disordered and displaced between two metal centers. Crystal system: Triclinic space group:P-1, Z=2. a=0.82714(17) nm, b=1.3484(3) (1) nm, and c=1.3898(3) (1) nm, α=79.89(3)°, β=76.67(3)°, and γ=72.43(3)°. V=1.428.6(5) nm3, Dx=1.812 g·cm-3. (Δρ)max=1.510×10-3 enm3, (Δρ)min=-1.503×10-3 enm3. Accordingly, two water molecules occupy the metal centers in the apical positions via the syn-geometry.
Leon Dyers Jr1，Donald Van Derveer2，Xiu R Bu1
(1.Department of Chemistry, NASA Center for High Performance Polymers and Composites, Clark Atlanta University, Atlanta, Georgia 30314, USA;
2.Department of Chemistry, Clemson University, Clemson, South Carolina 29634, USA)
Abstract:A new bimetallic complex containing Zn and La was prepared from a salen ligand possessing methoxyl groups at the 3, 3''-positions. The structural feature is that one of nitrate groups is disordered and displaced between two metal centers. Crystal system: Triclinic space group:P-1, Z=2. a=0.82714(17) nm, b=1.3484(3) (1) nm, and c=1.3898(3) (1) nm, α=79.89(3)°, β=76.67(3)°, and γ=72.43(3)°. V=1.428.6(5) nm3, Dx=1.812 g·cm-3. (Δρ)max=1.510×10-3 enm3, (Δρ)min=-1.503×10-3 enm3. Accordingly, two water molecules occupy the metal centers in the apical positions via the syn-geometry.
Key words:bimetallic complex; zinc; lanthannm; rare earths;
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