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Syntheses and Crystal Structures of Ln(phen) 2 (NO 3 ) 3 with Ln = Pr, Nd, Sm, Eu, Dy, and phen = 1,10‐phenanthroline
Author(s) -
Zheng YueQing,
Zhou LinXia,
Lin JianLi,
Zhang SunWei
Publication year - 2001
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/1521-3749(200107)627:7<1643::aid-zaac1643>3.0.co;2-3
Subject(s) - monoclinic crystal system , crystallography , dodecahedron , crystal structure , chemistry , molecule , stacking , lanthanide , stereochemistry , ion , organic chemistry
Abstract Five new complex compounds of the formula Ln(phen) 2 (NO 3 ) 3 were prepared. The X‐ray structural analyses indicate that they crystallize isostructurally in the monoclinic space group C 2/ c (no. 15) with cell dimensions for example for Pr(phen) 2 (NO 3 ) 3 : a = 11.194(1) Å, b = 18.095(2) Å, c = 13.101(2) Å, β = 100.52(1)°, V = 2609.1(6) Å 3 , Z = 4. The crystal structures consist of [Ln(phen) 2 (NO 3 ) 3 ] complex molecules. The rare earth atoms are coordinated by four N atoms of two phen ligands and six O atoms of three nitrato groups to complete a distorted bicapped dodecahedron. The [Ln(phen) 2 (NO 3 ) 3 ] complex molecules are assembled via π‐π stacking interactions between the neighboring phen ligands to form 1D columnar chains, which are then arranged in the crystal structures according to pseudo 1D close‐packed patterns.