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Preparation and Reactions of Sulfides

Preparation and Reactions of Sulfides

Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.

Formation of Complex Ions

Formation of Complex Ions

A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...

Ionic Crystal Structures

Ionic Crystal Structures

Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...

Structural Isomerism

Structural Isomerism

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.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...

Valence Bond Theory

Valence Bond Theory

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...

Structure and Nomenclature of Thiols and Sulfides

Structure and Nomenclature of Thiols and Sulfides

Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively, where the sulfur atom takes the place of the oxygen atom. Thus, thiols are generally represented as RSH, where R is an alkyl substituent and —SH is the functional group. On the other hand, in sulfides, the central sulfur atom is bonded to two hydrocarbon groups on either side. Depending upon the type of group, sulfides can be either symmetrical or asymmetrical. Both thiols and sulfides display a bent geometry, similar...

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Preparation of SNS Cobalt(II) Pincer Model Complexes of Liver Alcohol Dehydrogenase

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Suboxides with complex anions: the suboxoindate Cs9InO4.

Constantin Hoch¹, Johannes Bender, Arndt Simon

¹Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, 70569 Stuttgart, Germany.

Angewandte Chemie (International Ed. in English)

|February 17, 2009

Summary

Researchers discovered a novel suboxometallate, cesium(9)indium(4) oxide (Cs(9)InO(4)), featuring metallic cesium columns alongside ionic oxoindate(III) columns. This finding expands the known chemistry of suboxides to include complex anions.

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Area of Science:

Solid-state chemistry
Inorganic chemistry
Materials science

Background:

Suboxides represent a unique class of compounds with varying metal-to-oxygen ratios.
Understanding the structural diversity and bonding in suboxides is crucial for developing new materials.

Purpose of the Study:

To synthesize and characterize a novel suboxometallate compound.
To investigate the structural features and chemical bonding within the new material.
To expand the known structural chemistry of suboxides.

Main Methods:

Single-crystal X-ray diffraction was used to determine the crystal structure.
Chemical bonding analysis was performed to understand the interactions between different structural units.

Main Results:

A new suboxometallate, Cs(9)InO(4), was successfully synthesized.
The crystal structure reveals the presence of metallic cesium columns interspersed with ionic oxoindate(III) columns.
This structure represents a novel arrangement within suboxometallate chemistry.

Conclusions:

The discovery of Cs(9)InO(4) expands the known structural motifs in suboxide chemistry.
The coexistence of metallic and ionic columns highlights unique bonding characteristics.
This work opens avenues for exploring new suboxide structures with complex anions.