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3',6'-Bis(ethyl-amino)-2-[(2-hydroxy-ethyl)-amino]-2',7'-dimethylspiro-[isoindoline-1,9'-xanthen]-3-one.

ABSTRACT: In the title compound, C(28)H(32)N(4)O(3), the dihedral angle between the planes of the xanthene ring system and the spiro-lactam ring is 85.99?(3)°. Mol-ecules are linked by inter-molecular O-H?O and N-H?O hydrogen-bonding inter-actions.

SUBMITTER: Tian MZ

PROVIDER: S-EPMC2962210 | biostudies-literature | 2008 Jul

REPOSITORIES: biostudies-literature

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3',6'-Bis(ethyl-amino)-2-[(2-hydroxy-ethyl)-amino]-2',7'-dimethylspiro-[isoindoline-1,9'-xanthen]-3-one.

Tian Mao-Zhong MZ Peng Xiao-Jun XJ

Acta crystallographica. Section E, Structure reports online 20080731 Pt 8

In the title compound, C(28)H(32)N(4)O(3), the dihedral angle between the planes of the xanthene ring system and the spiro-lactam ring is 85.99 (3)°. Mol-ecules are linked by inter-molecular O-H⋯O and N-H⋯O hydrogen-bonding inter-actions. ...[more]

PMID: 21203332

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3',6'-Bis(diethyl-amino)-2-(2-hydroxy-ethyl-amino)spiro-[isoindoline-1,9'-xanthen]-3-one.

Project description:In the title mol-ecule, C(30)H(36)N(4)O(3), the dihedral angle between the planes of the xanthene and spiro-lactam rings systems is 88.69?(4)°. Both C atoms of one of the ethyl groups are disordered over two sites with occupancies 0.72?(2)/0.28?(2). The conformation of the mol-ecule may be influenced by two intra-molecular hydrogen bonds.

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2-[(2,4-Dihydroxy-benzyl-idene)amino]-3',6'-bis-(ethyl-amino)spiro-[isoindoline-1,9'-xanthen]-3-one.

Project description:The title compound, C(35)H(36)N(4)O(4), was prepared as a spiro-lactam ring formation of rhodamine B dye for comparison with a ring-opened form. The xanthene ring system is approximately planar. The r.m.s. deviation from planarity is 0.064?(6)?Å for the xanthene ring. The dihedral angles formed by the spiro-lactam and 2,4-dihydroxy-benzene rings with the xanthene ring system are 86.6?(9) and 88.0?(9)°, respectively.

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3',6'-Bis(diethyl-amino)-2-phenyl-spiro[isoindoline-1,9'-xanthen]-3-one.

Project description:The title compound, C(34)H(35)O(2)N(3), was synthesized by the reaction of 2-[3,6-bis-(diethyl-amino)-9H-xanthen-9-yl]benzoyl chloride with aniline. In the mol-ecular structure, the dihedral angles between the isoindoline and xanthene planes and between the isoindoline and benzene planes are 86.9?(3) and 47.0?(2)°, respectively. The mol-ecular packing in the crystal structure is stabilized by weak C-H?O hydrogen bonding.

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Project description:In the title compound, C(37)H(40)N(4)O(2), the xanthene and spiro-lactam rings are almost planar, with r.m.s. deviations from the mean planes of 0.223?(2) and 0.057?(2)?Å, respectively, and form a dihedral angle of 85.76?(3)°. The dihedral angle between the xanthene mean plane and the benzene ring is 87.16?(5)°. One of the two ethyl groups of one of the diethyl-amino groups is disordered over two sets of sites [0.76?(1):0.24?(1)].

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3',6'-Bis(ethyl-amino)-2',7'-dimethyl-2-{[2-[(E)-3,4-methyl-enedioxy-benzyl-idene-amino]eth-yl}spiro-[isoindoline-1,9'-xanthen]-3-one.

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Project description:In the title compound, C(33)H(38)N(4)O(3), the mean planes of the 9H-xanthene unit and spiro-lactam (nine-atom) core are almost mutually perpendicular at 87.26?(6)°. Intra-molecular N-H?O and C-H?N inter-actions influence the 4-oxo-pent-2-en-2-yl-amino conformation. In the crystal, weak C-H?O hydrogen bonds link the mol-ecules into chains along [001].

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3',6'-Bis(ethyl-amino)-2',7'-dimethyl-2-{2-(E)-[(thio-phen-2-yl)methyl-idene-amino]-eth-yl}spiro-[isoindoline-1,9'-xanthen]-3-one methanol monosolvate.

Project description:The title compound, C(33)H(34)N(4)O(2)S·CH(3)OH, was prepared as a spiro-lactam ring formation of rhodamine 6?G dye for comparison with a ring-opened form. The xanthene and spiro-lactam rings are approximately planar [r.m.s. deviations from planarity = 0.122?(3) and 0.072?(6)?Å, respectively]. The dihedral angles formed by the spiro-lactam and thio-phene rings with the xanthene ring system are 89.7?(6) and 86.5?(2)°, respectively. The crystal structure features N-H?O and C-H?O hydrogen bonds.

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3',6'-Bis(diethyl-amino)-2-[(E)-2-(4-hy-droxy-3-meth-oxy-benzyl-idene-amino)-eth-yl]spiro-[isoindoline-1,9'-xanthen]-3-one ethanol monosolvate.

Project description:In the title compound, C(38)H(42)N(4)O(4)·C(2)H(6)O, prepared via a spiro-lactam ring-formation reaction in a rhodamine dye, the xanthene ring system is approximately planar (r.m.s. deviation = 0.0014Å) and subtends dihedral angles of 88.10?(3) and 86.92?(4)° with the spiro-lactam (r.m.s. deviations = 0.0012?Å) and benzene rings, respectively. The crystal structure consists of chains parallel to [-101], formed via O-H?O inter-actions.

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Crystal structure, Hirshfeld surface analysis and DFT study of 2,2''-({[(1<i>E</i>,1'<i>E</i>)-(diselanedi-yl)bis-(2,1-phenyl-ene)]bis-(methane-ylyl-idene)}bis-(aza-neylyl-idene))bis-[3',6'-bis-(di-ethyl-amino)-4a',9a'-di-hydro-spiro-[isoindoline-1,9'-xanthen]-3-one].

Project description:The title compound, C70H70N8O4Se2, is a spiro bicyclic diselenide, made up of two [SeC6H4CH=N-N(CO)C6H4(C)C6H3NEt2(O)C6H3NEt2] units related by a twofold crystallographic symmetry element bis-ecting the diselenide bond. The compound crystallizes in a non-centrosymmetric polar space group (tetra-gonal, P b2) and the structure was refined as an inversion twin. The two diethyl amine groups and their attached phenyl groups of the xanthene ring are disordered over two orientations, with occupancies of 0.664 (19)/0.336 (19) and 0.665 (11)/0.335 (11), respectively. The dihedral angles between the mean planes of the central isoindoline and the phenyl rings are 26.8 (2) and 2.5 (4)°, respectively. The mean plane of the central xanthene ring forms dihedral angles of 2.0 (5), 8.8 (5), 1.7 (5) and 7.9 (6)° with the peripheral phenyl rings. The isoindoline and xanthene rings subtend a dihedral angle of 89.8 (2)°. The mol-ecular conformation is stabilized by an intra-molecular C-H⋯O hydrogen bond generating an S(6) ring motif. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds together with C-H⋯π (ring) inter-actions, forming a three-dimensional network. A Hirshfeld surface analysis of the crystal structure indicates that the most important contributions to the crystal packing are from H⋯H (68.1%), C⋯H/H⋯C (21.2%) and O⋯H/H⋯O (8.7%) contacts. The optimized structure calculated using density functional theory (DFT) at the B3LYP/6 - 31 G(d) level is compared with the experimentally determined mol-ecular structure in the solid state. The HOMO-LUMO behaviour was used to determine the energy gap and the mol-ecular electrostatic potential (MEP) of the compound was investigated.

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