Related Experiment Video
Updated: May 31, 2026

19:58
Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
catena-Poly[bis-(μ(3)-2-methyl-benzoato)disilver(I)].
Summary
The crystal structure of a silver compound reveals polymeric chains with silver cations in a distorted trigonal coordination, featuring specific silver-oxygen bond lengths and separations.
Area of Science:
- Inorganic Chemistry
- Crystal Engineering
- Coordination Chemistry
Background:
- Silver coordination polymers are of interest due to their diverse structural motifs and potential applications.
- Understanding the relationship between ligand structure and resulting network topology is crucial for designing novel materials.
Purpose of the Study:
- To elucidate the crystal structure of the silver 2-methyl-benzoate compound.
- To analyze the coordination environment of silver cations and the arrangement of organic ligands.
- To investigate the intermolecular interactions within the polymeric structure.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the crystal structure.
- The crystal structure was analyzed to identify coordination geometries and bond distances.
- Intermolecular silver-silver separations and ligand orientations were quantified.
Main Results:
- The crystal structure of [Ag(2)(C(8)H(7)O(2))(2)](n) was determined, showcasing polymeric chains along the a axis.
- Two silver cations exhibit distorted trigonal coordination with Ag-O bond lengths ranging from 2.169(2) to 2.433(2) Å.
- Silver-silver separations fall within 2.8674(4)-3.6256(5) Å, and 2-methyl-benzoate groups are oriented at a 60.7(1)° dihedral angle.
Conclusions:
- The study provides detailed structural information on a novel silver coordination polymer.
- The distorted trigonal coordination and specific Ag-O bond lengths highlight the coordination preferences of silver(I) in this system.
- The observed structural features contribute to the understanding of crystal packing and intermolecular forces in silver carboxylates.
Related Concept Videos
Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions
Arenediazonium substitution reactions occur when the diazonium group is substituted by various functional groups such as halides, hydroxyl, nitrile, etc. For instance, arenediazonium salts react with copper(I) salts of chloride, bromide, or cyanide to form corresponding aryl chlorides, bromides, and nitriles. These reactions are named Sandmeyer reactions. Although the mechanism of this reaction is complicated, as illustrated in Figure 1, they are believed to progress via an aryl copper...
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...
Stereoisomerism
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
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...
Isomers are different chemical species that have the same chemical formula.
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...
Complexometric Titration: Ligands
Different monodentate and polydentate ligands are used as complexing agents in complexometric titration reactions. The formation of complexes by mono- and bidentate ligands involves two or more intermediate steps, limiting their use as complexing agents. In comparison, polydentate ligands can form complexes with metal ions in a single-step process, facilitating sharper end points. This means polydentate ligands, such as amino carboxylic acid derivatives, are most commonly employed in...
Metal-Ligand Bonds
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
Properties of Organometallic Compounds
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.

