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Synthesis and Crystal Structure of [La(phen) 2 (H 2 O) 2 (NO 3 ) 2 ]NO 3 · 2(phen)(H 2 O) with phen = 1,10‐phenanthroline
Author(s) -
Zheng YueQing,
Zhou LinXia,
Lin JianLi,
Zhang SunWei
Publication year - 2000
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(200008)626:8<1715::aid-zaac1715>3.0.co;2-s
Subject(s) - triclinic crystal system , denticity , chemistry , crystallography , molecule , stacking , cationic polymerization , crystal structure , chelation , phenanthroline , intermolecular force , stoichiometry , stereochemistry , inorganic chemistry , polymer chemistry , organic chemistry
The title compound [La(phen) 2 (H 2 O) 2 (NO 3 ) 2 ](NO 3 ) · 2(phen)(H 2 O) with phen = 1,10‐phenanthroline was prepared by the stoichiometric reaction of La(NO 3 ) 3 · 6 H 2 O and 1,10‐phenanthroline monohydrate in a CH 3 OH–H 2 O solution. The crystal structure (triclinic, P 1 (no. 2), a = 11.052(2), b = 13.420(2), c = 16.300(2) Å, α = 78.12(1)°, β = 88.77(1)°, γ = 83.03(1)°, Z = 2, R = 0.0488, w R 2 = 0.1028) consists of [La(phen) 2 (H 2 O) 2 (NO 3 ) 2 ] 2+ complex cations, NO 3 – anions, phen and H 2 O molecules. The La atom is 10‐fold coordinated by four N atoms of two bidentate chelating phen ligands and six O atoms of two H 2 O molecules and two bidentate chelating NO 3 2– ligands with d(La–O) = 2.522–2.640 Å and d(La–N) = 2.689–2.738 Å. The intermolecular π‐π stacking interactions play an essential role in the formation of two different 2 D layers parallel to (001), which are formed by complex cations and uncoordinating phen molecules, respectively. The uncoordinated NO 3 – anions and H 2 O molecules are sandwiched between the cationic and phen layers.