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Bis[6-meth-oxy-2-[(4-methyl-phen-yl)iminiometh-yl]phenolate-?O]tris-(nitrato-?O,O')ytterbium(III) monohydrate.

ABSTRACT: The crystal structure of title compound, [Yb(NO(3))(3)(C(15)H(15)NO(2))(2)]·H(2)O, contains two Schiff base 2-[(4-methyl-phen-yl)imino-meth-yl]-6-methoxy-phenol (HL) ligands, three independent nitrate ions that chelate to the ytterbium(III) ion in an O,O'-bidentate manner and an uncoordinated water mol-ecule. The coordination number of the Yb(III) ion is eight. The HL ligands chelate with a strong Yb-O(phenolate) bond and a weak Yb-O(meth-oxy) contact. The latter augments the coordination polyhedron to give a YbO(10) bicapped square antiprism. Classical inter-molecular O-H?O and N-H?O hydrogen bonds as well as weak C-H?O contacts contribute to the stability of the structure.

SUBMITTER: Liu JF

PROVIDER: S-EPMC2971141 | biostudies-literature | 2009 Oct

REPOSITORIES: biostudies-literature

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Bis[6-meth-oxy-2-[(4-methyl-phen-yl)iminiometh-yl]phenolate-κO]tris-(nitrato-κO,O')ytterbium(III) monohydrate.

Liu Jian-Feng JF Liu Jia-Lu JL Zhao Guo-Liang GL

Acta crystallographica. Section E, Structure reports online 20091017 Pt 11

The crystal structure of title compound, [Yb(NO(3))(3)(C(15)H(15)NO(2))(2)]·H(2)O, contains two Schiff base 2-[(4-methyl-phen-yl)imino-meth-yl]-6-methoxy-phenol (HL) ligands, three independent nitrate ions that chelate to the ytterbium(III) ion in an O,O'-bidentate manner and an uncoordinated water mol-ecule. The coordination number of the Yb(III) ion is eight. The HL ligands chelate with a strong Yb-O(phenolate) bond and a weak Yb-O(meth-oxy) contact. The latter augments the coordination polyhe ...[more]

PMID: 21578132

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Bis{6-meth-oxy-2-[(4-methyl-phen-yl)iminiometh-yl]phenolate-?O,O'}tris-(nitrato-?O,O')holmium(III) mono-hydrate.

Project description:The crystal structure of the title compound, [Ho(NO(3))(3)(C(15)H(15)NO(2))(2)]·H(2)O, contains two Schiff base 6-meth-oxy-2-[(4-methyl-phen-yl)iminiometh-yl]phenolate (L) ligands, three independent nitrate ions that chelate to the Ho(III) ion with O atoms and a hydrate water mol-ecule. The coordination environment of the Ho(III) ion is ten-coordinate. The L ligands chelate with a strong Ho-O(phenolate) bond and weaker Ho-O(meth-oxy) contacts. The latter can be inter-preted as the apices of the bicapped square-anti-prismatic [HoO(10)] polyhedron. Inter-molecular N-H?O hydrogen bonds occur. Intra-molecular O-H?O inter-actions link the complex mol-ecules and uncoordinated water mol-ecules.

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Tris{2-meth-oxy-6-[(4-methyl-phen-yl)iminiometh-yl]phenolate-?O,O'}tris-(thio-cyanato-?N)europium(III).

Project description:The metal center in the structure of the title compound, [Eu(NCS)(3)(C(15)H(15)NO(2))(3)], is coordinated by three Schiff base 2-meth-oxy-6-[(4-methyl-phen-yl)iminiometh-yl]phenolate (L) ligands and three independent thio-cyanate ions. In the crystal structure, the acidic H atom is located on the Schiff base N atom and hydrogen bonded to the phenolate O atom. The coordination environment of the Eu(III) ion is nine-coordinate by three chelating methoxy-phenolate pairs of O atoms and three N-atom terminals of the thio-cyanate ions. The compound is isostructural with the Ce(III) analogue [Liu et al. (2009 ?). Acta Cryst. E65, m650].

| S-EPMC2972108 | biostudies-literature

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Project description:The crystal structure of title compound, [Eu(NO(3))(3)(C(15)H(15)NO(2))(2)], contains two Schiff base 6-meth-oxy-2-[(4-methyl-phen-yl)imino-meth-yl]phenolate (L) ligands and three independent nitrate ions that chelate to the europium(III) ion via the O atoms. The coordination number of the Eu(III) ion is ten. The L ligands chelate with a strong Eu-O(deprotonated phenolate) bond and a weak Eu-O(meth-oxy) contact, the latter can be inter-preted as the apices of the bicapped square-anti-prismatic Eu(III) polyhedron. Intra-molecular N-H?O hydrogen bonds occur.

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Project description:The asymmetric unit of title compound, [Ce(NO(3))(3)(C(15)H(15)NO(2))(2)(CH(3)OH)], consists of two Schiff base 2-meth-oxy-6-[(4-methyl-phen-yl)iminiometh-yl]phenolate (HL) ligands, three nitrate anions and a methanol ligand. The Ce(III) ion is 11-coordinated: three nitrate radical anions coordinate to the Ce(III) ion through O atoms, two HL ligands chelate the Ce(III) ion through the O atoms of the phenolate and meth-oxy groups, and one methanol mol-ecule coordinates to Ce(III) ion through its O atom. The O atom of one nitrate anion is disordered over two sites of equal occupancy. The protonated imine N atoms are involved in intra-molecular hydrogen bonds with the phenoxide groups. C-H?O inter-actions are also observed.

| S-EPMC3007323 | biostudies-literature

(Methanol-κO)bis-{2-meth-oxy-6-[(4-methyl-phen-yl)iminiometh-yl]phenolato-κO,O'}tris-(nitrato-κO,O')lanthanum(III).

Project description:The asymmetric unit of title compound, [La(NO(3))(3)(C(15)H(15)NO(2))(2)(CH(3)OH)], consists of two Schiff base 2-meth-oxy-6-[(4-methyl-phen-yl)iminiometh-yl]phenolato (HL) ligands, three independent nitrate anions and one methanol mol-ecule coordinated to La(III). The coordination environment of the La(III) ion is formed by eleven O atoms. Three bidentate nitrate anions coordinate to the La(III) ion, while two HL ligands chelate the metal center with O atoms from the phenolate and meth-oxy groups. The HL ligands are zwitterionic, with protonated imine N atoms. The coordination sphere is completed by one methanol mol-ecule. The protonated imine N atoms are involved in intra-molecular N-H⋯O hydrogen bonds with the phen-oxy groups and nitrate ligands. One O atom of one nitrate group is disordered over two sites of equal occupancy.

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(E)-2-[(2-Hydr-oxy-5-nitro-phen-yl)iminiometh-yl]phenolate.

Project description:In the title mol-ecule, C(13)H(10)N(2)O(4), the dihedral angle between the mean planes of the benzene and phenolate rings is 21.6?(4)°. The nitro O atoms are twisted slightly out of the plane of the ring to which the nitro group is attached [dihedral angle 8.4?(3)°]. The amine group forms an intra-molecular hydrogen bond with both nearby O atoms. An extended ? delocalization throughout the entire mol-ecule exists producing a zwitterionic effect in this region of the mol-ecule. The shortened C-O bond [1.2997?(15)?Å] in concert with the slightly longer C-OH bond [1.3310?(16)?Å] provide evidence for this effect. The crystal packing is influenced by strong inter-molecular O-H?O hydrogen bonding. As a result, mol-ecules are linked into an infinite zigzag chain running along the b axis. A MOPAC PM3 calculation provides support to these observations.

| S-EPMC2968543 | biostudies-literature

2-[(E)-(3-Carb-oxy-4-hy-droxy-phen-yl)iminiometh-yl]-4-chloro-phenolate.

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