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Related Concept Videos

Stereoisomerism of Cyclic Compounds02:33

Stereoisomerism of Cyclic Compounds

In this lesson, we delve into the role of ring conformation and its stability, which determines the spatial arrangement and, consequently, the molecular symmetry and stereoisomerism of cyclic compounds. 1,2-Dimethylcyclohexane is used as a case study to evaluate the possible number of stereoisomers. Here, given the multiple (n = 2) chiral centers, there are 2n = 4 possible configurations that lack a plane of symmetry, as the ring skeleton exists in a non-planar chair conformation. In addition,...
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The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...
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Isomerism in Complexes
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Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
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Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
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2-Benzyl-isoindoline-1,3-dione: a monoclinic polymorph.

Zhou Jiang1, Jun-Dong Wang, Nai-Sheng Chen

  • 1Institute of Research on Functional Materials, Department of Chemistry, University of FuZhou, Fuzhou 350002, People's Republic of China.

Acta Crystallographica. Section E, Structure Reports Online
|January 5, 2011
PubMed
Summary

The crystal structure of C(15)H(11)NO(2) reveals a significant dihedral angle of 81.3° between its ring systems. Molecules are interconnected through specific carbon-hydrogen to oxygen interactions in the solid state.

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Area of Science:

  • Crystallography
  • Molecular structure analysis
  • Supramolecular chemistry

Background:

  • Understanding molecular arrangements is crucial for predicting material properties.
  • Intermolecular forces dictate crystal packing and macroscopic behavior.
  • The specific compound C(15)H(11)NO(2) has not been previously characterized in detail.

Purpose of the Study:

  • To elucidate the three-dimensional molecular structure of C(15)H(11)NO(2).
  • To investigate the intermolecular interactions present in the crystal lattice.
  • To provide a foundation for future studies on related compounds.

Main Methods:

  • Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
  • Analysis of bond lengths, bond angles, and torsion angles provided geometric information.
  • Intermolecular interactions were identified using geometric criteria for hydrogen bonding and other non-covalent forces.

Main Results:

  • The molecular structure of C(15)H(11)NO(2) was determined, confirming its chemical formula.
  • A notable dihedral angle of 81.3(2)° was observed between the two main ring systems within the molecule.
  • The crystal structure is stabilized by intermolecular C-H⋯O interactions, linking molecules into a cohesive network.

Conclusions:

  • The crystal structure of C(15)H(11)NO(2) is characterized by a near-orthogonal arrangement of its ring systems.
  • C-H⋯O interactions play a significant role in the self-assembly and stability of the crystal.
  • This structural data serves as a reference for the chemical and physical properties of this compound.