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Tris(dibenzoyl-methanido-κO,O')[(6S,8S)-(+)-7,7-dimethyl-3-(2-pyrid-yl)-5,6,7,8-tetra-hydro-6,8-methano-isoquinoline-κN,N']gadolinium(III).

ABSTRACT: In the title compound, [Gd(C(15)H(11)O(2))(3)(C(17)H(18)N(2))], the Gd(III) atom is coordinated by six O atoms from three β-diketonate ligands and two N atoms from a chiral ligand L(S),(S)-(+)-7,7-dimethyl-3-(2-pyrid-yl)-5,6,7,8-tetra-hydro-6,8-methano-iso-quinoline, in a coordination geometry best described as distorted square-anti-prismatic.

SUBMITTER: Li XL

PROVIDER: S-EPMC2969912 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Tris(dibenzoyl-methanido-?O,O')[(6R,8R)-(-)-7,7-dimethyl-3-(2-pyrid-yl)-5,6,7,8-tetra-hydro-6,8-methano-isoquinoline-?N,N']terbium(III).

Project description:In the title compound, [Tb(C(15)H(11)O(2))(3)(C(17)H(18)N(2))], the 7,7-dimethyl-3-(2-pyrid-yl)-5,6,7,8-tetra-hydro-6,8-methano-iso-quin-oline (L(RR)) ligand coordinates to Tb(III) through the two N atoms of the heterocycle. The metal centre is also chelated by three deprotonated 1,3-diphenyl-propane-1,3-dione (dbm) ligands, forming enanti-omerically pure [Tb(dbm)(3)L(RR)]. The Tb(III) atom is located in a distorted square anti-prism of eight coordinating atoms (six O and two N atoms).

| S-EPMC2969283 | biostudies-literature

(4R,5R,6S,7R,8S,9R,10S,13S)-7,8β-Epoxy-momilactone-A.

Project description:The title compound, C(20)H(26)O(4), was extracted from Leucas Urticifolia, a wild Lamiaceae herb distributed in the Punjab, Baluchistan, Sindh and the Rajputana desert of Pakistan. The plant is utilized for various medicinal applications by the local community. The title compound is based on the pimarane-diterpene skeleton. The mol-ecule exhibits an ep-oxy ring fused to momilactone-A, leading to a penta-cyclic mol-ecular structure. The absolute configuration was assigned by comparison with the crystal structure of momilactone, but needs further verification. The crystal structure is governed by four inter-molecular hydrogen-bond inter-actions of the C-H⋯O type.

| S-EPMC2961202 | biostudies-literature

(4'-All-yloxy-2,2':6',2''-terpyridine)(dibenzoyl-methanido)dinitratoerbium(III) acetonitrile solvate.

Project description:The title complex, [Er(C(15)H(11)O(2))(NO(3))(2)(C(18)H(15)N(3)O)]·CH(3)CN, has been synthesized from 4'-all-yloxy-2,2':6',2''-terpyridine (altpy), dibenzoyl-methane and erbium nitrate. The distorted monocapped square anti-prismatic coordination polyhedron is formed by a bidentate dibenzoyl-methanide residue, a tridentate altpy ligand and two nitrate anions that act as bidentate ligands and occupy mutually trans sites.

| S-EPMC2979846 | biostudies-other

4-(4-Methoxy-phen-yl)-7,7-dimethyl-5-oxo-5,6,7,8-tetra-hydrochromene-2,5-dione.

Project description:The title compound, C(18)H(20)O(4), was synthesized by the reaction of 4-methoxy-benzaldehyde, 2,2-dimethyl-1,3-dioxane-4,6-dione and 5,5-dimethyl-cyclo-hexane-1,3-dione with triethyl-benzyl-ammonium chloride in water as a green solvent. In the mol-ecule of the title compound, the six-membered pyran-one ring of the hexa-hydro-coumarin system has a screw-boat conformation while that of the dimethyl-cyclo-hexenone system has a distorted envelope conformation. The CMe(2) portion of this ring is disordered over two positions with refined occupancies of 0.721 (7) and 0.279 (7).

| S-EPMC2972097 | biostudies-literature

(6S,7S,8S,8aS)-6-Ethyl-3-oxo-1,2,3,5,6,7,8,8a-octa-hydro-indolizine-7,8-diyl diacetate.

Project description:In the mol-ecular structure of the title compound, C(14)H(21)NO(5), the six-membered ring of the indolizine moiety adopts a chair conformation. There are two independent mol-ecules in the asymmetric unit. The oxopyrrolidine ring attached to the indolizine ring system is nearly planar, with mean deviations of 0.018 (3) and 0.010 (3) Å for the two mol-ecules. The absolute configuration of the title compound was assigned from the synthesis.

| S-EPMC3295453 | biostudies-literature

Bis[(2-pyrid-yl)(2-pyridyl-amino)-methano-lato]manganese(III) nitrate.

Project description:The Mn(III) atom in the title complex, [Mn(C(11)H(10)N(3)O)(2)]NO(3), is coordinated by the two tridentate (2-pyrid-yl)(2-pyridyl-amino)-methano-late ligands, forming a six-coordinate environment. The four pyridyl N atoms constitute the equatorial plane on which the manganese(III) ion lies; the coordination plane suffers a slight distortion as indicated by the average plane deviation of 0.058?Å. The methano-late O atoms occupy the axial positions. The coordination geometry is thus octa-hedral. In the title compound, the cations are linked by nitrate anions via N-H?O hydrogen bonds to form one-dimensional chains. Moreover, the one-dimensional structure is stabilized by inter-molecular edge-to-face aromatic ?-? inter-actions with a center-of-inversion at a distance of ca 4.634?Å.

| S-EPMC3089209 | biostudies-literature

(4'-All-yloxy-2,2':6',2''-terpyridine-?N,N',N'')(dibenzoyl-methanido-?O,O')bis-(nitrato-?O,O')neodymium(III) acetonitrile solvate.

Project description:The title complex, [Nd(C(15)H(11)O(2))(NO(3))(2)(C(18)H(15)N(3)O)]·CH(3)CN or [Nd(altpy)(dbm)(NO(3))(2)]·CH(3)CN (altpy = 4'-all-yl-oxy-2,2':6',2''-terpyridine, dbm = dibenzoyl-methanide anion), has been synthesized from 4'-all-yloxy-2,2':6',2''-terpyridine, dibenzoyl-methanate and neodymium nitrate. The Nd(3+) atom is nine-coordinated by two O atoms from the bidentate dbm ligand, three N atoms from the tridentate altpy ligand and four O atoms from two nitrate anions that act as bidentate ligands and occupy mutually trans sites in a distorted monocapped square-anti-prismatic geometry.

| S-EPMC2980225 | biostudies-literature

2-Amino-7,7-dimethyl-5-oxo-4-(p-tol-yl)-5,6,7,8-tetra-hydro-4H-chromene-3-carbonitrile.

Project description:In the title mol-ecule, C(19)H(20)N(2)O(2), the cyclo-hexene ring adopts a sofa conformation, while the pyran ring adopts a flattened boat conformation. In the crystal, mol-ecules are linked by N-H?N and N-H?O hydrogen bonds, forming a two-dimensional network parallel to (010).

| S-EPMC3415029 | biostudies-literature

(6S,7S,8S,8aS)-6-Ethyl-7,8-dihy-droxy-1,5,6,7,8,8a-hexa-hydro-indolizin-3(2H)-one monohydrate.

Project description:The absolute configuration of the title compound, C(10)H(17)NO(3)·H(2)O, was assigned from the synthesis. In the mol-ecular structure, the central six-membered ring of the indolizine moiety adopts a chair conformation, with two atoms displaced by -0.578?(2) and 0.651?(1)?Å from the plane of the other four atoms [maximum deviation 0.019?(2)?Å] The conformation of the fused oxopyrrolidine ring is close to that of a flat envelope, with the flap atom displaced by 0.294?(1)?Å from the plane through the remaining four atoms. In the crystal, one of the hy-droxy groups is hydrogen-bonded to two water mol-ecules, while the other hy-droxy group exhibits an inter-molecular hydrogen bond to the carbonyl O atom, resulting in a chain parallel to the b axis.

| S-EPMC3011597 | biostudies-literature

(4R,6S,7S,8S,8aS)-6-Ethyl-7,8-dihy-droxy-4-methyl-1,2,3,5,6,7,8,8a-octa-hydro-indolizin-4-ium iodide.

Project description:The title compound, C(11)H(22)NO(2) (+)·I(-), is a chiral mol-ecule with five stereogenic centres. The absolute configuration was assigned from the synthesis and confirmed by the structure determination. The central six-membered ring of the indolizine system adopts a chair conformation, with two atoms displaced by -0.690 (2) and 0.550 (2) Å from the plane of the other four atoms. The conformation of the pyrrolidine ring is close to that of an envelope, with the flap atom displaced by 0.563 (2) Å from the plane of the remaining four atoms. In the crystal, there are two O-H⋯I hydrogen bonds.

| S-EPMC3239140 | biostudies-literature

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