Poly[[hexaaqua(μ2-oxalato-κ4 O 1,O 2:O 1′,O 2′)bis(μ3-pyridine-2,4-dicarboxylato-κ4 N,O 1:O 1′:O 4)dicerium(III)] monohydrate]
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چکیده
In the polymeric title compound, {[Ce(2)(C(7)H(3)NO(4))(2)(C(2)O(4))(H(2)O)(6)]·H(2)O}(n), the Ce(3+) cation is nine-coordinated in a distorted CeNO(8) tricapped trigonal-prismatic geometry, formed by three pyridine-2,4-dicarboxyl-ate anions, one oxalate anion and three water mol-ecules. The mid-point of the oxalate anion is located on an inversion center. The oxalate and pyridine-2,4-dicarboxyl-ate anions bridge the Ce(3+) cations, forming a two-dimensional polymeric complex parallel to (010). Inter-molecular classical O-H⋯O hydrogen bonding and weak C-H⋯O hydrogen bonding are present in the crystal structure and π-π stacking [centroid-centroid distance = 3.558 (2) Å] is observed between parallel pyridine rings of adjacent mol-ecules. The uncoordinated water mol-ecule shows an occupancy of 0.5.
منابع مشابه
Poly[[hexaaqua(μ2-oxalato-κ4 O 1,O 2:O 1′,O 2′)bis(μ3-pyridine-2,4-dicarboxylato-κ4 N,O 2:O 2′:O 4)dilanthanum(III)] monohydrate]
In the polymeric title compound, {[La(2)(C(7)H(3)NO(4))(2)(C(2)O(4))(H(2)O)(6)]·H(2)O}(n), the La(3+) cation is nine-coordinated in a distorted LaNO(8) tricapped trigonal-prismatic geometry formed by three pyridinedicarboxylate anions, one oxalate anion and three water mol-ecules. The oxalate anion is located on an inversion center. The oxalate and pyridine-dicarboxyl-ate anions bridge the La(3...
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In the title coordination polymer, {[Sm(2)(C(4)H(2)O(4))(3)(H(2)O)(6)]·6H(2)O}(n), the Sm(III) ion is nine-coordinated by four O atoms from three different maleate ligands, two O atoms from one fumarate ligand and three O atoms from three water mol-ecules. The fumarate ligand lies on an inversion center. Adjacent Sm(III) ions are bridged by the maleate and fumarate ligands, forming a layer para...
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