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

ABSTRACT: 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.

SUBMITTER: Xu ZH

PROVIDER: S-EPMC2979423 | biostudies-literature | 2010 May

REPOSITORIES: biostudies-literature

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

Xu Zhi-Hong ZH Zhang Yan-Ling YL Zhao Yan-Ru YR Yang Feng-Ling FL

Acta crystallographica. Section E, Structure reports online 20100529 Pt 6

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. ...[more]

PMID: 21579564

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2-[(E)-2-(Benzyl-idene-amino)-eth-yl]-3',6'-bis-(diethyl-amino)-spiro-[isoindoline-1,9'-xanthen]-3-one.

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Project description: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.

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2-[(E)-(2,4-Dichloro-benzyl-idene)amino]-isoindoline-1,3-dione.

Project description:In the title compound, C(15)H(8)Cl(2)N(2)O(2), the mol-ecule adopts an E configuration about the central C=N double bond. The isoindoline ring is essentially planar, with a maximum deviation of 0.019?(2)?Å. The dihedral angle between the isoindoline ring and the dichloro-substituted benzene ring is 6.54?(9)°. An intra-molecular C-H?O hydrogen bond occurs. A short Cl?Cl contact of 3.4027?(9)?Å is present in the crystal structure. The crystal packing is further stabilized by weak C-H?? inter-actions.

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(Z)-3',6'-Bis(diethyl-amino)-2-(4-oxopent-2-en-2-yl-amino)-spiro-[isoindoline-1,9'-xanthen]-3-one.

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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