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Related Concept Videos

Ionic Crystal Structures02:42

Ionic Crystal Structures

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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...
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Lattice Centering and Coordination Number02:33

Lattice Centering and Coordination Number

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The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
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Structural Isomerism02:34

Structural Isomerism

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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.
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,...
19.0K
Valence Bond Theory02:42

Valence Bond Theory

8.3K
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...
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Cationic Chain-Growth Polymerization: Mechanism00:57

Cationic Chain-Growth Polymerization: Mechanism

2.2K
The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the...
2.2K
Coordination Compounds and Nomenclature02:54

Coordination Compounds and Nomenclature

21.0K
In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
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Related Experiment Video

Updated: May 12, 2025

Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules
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Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules

Published on: April 28, 2014

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An Ni-based coordination polymer with a bamboo-like crystal structure.

Yi Li1, Wang Xie2, Chen Lin2

  • 1Nanjing Petmedicine Technology Co., Ltd, Nanjing, People's Republic of China.

Acta Crystallographica. Section E, Crystallographic Communications
|May 8, 2025
PubMed
Summary

A novel nickel-based coordination polymer, Ni-BIBT-BINDI, was synthesized with a unique bamboo-like crystal structure. This material features Ni2+ ions coordinated by nitrogen and oxygen atoms, forming intricate Ni-O and Ni-N bonds.

Keywords:
Ni-based coordination polymerchain structurecrystal structuresing-crystal

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Solid-phase Submonomer Synthesis of Peptoid Polymers and their Self-Assembly into Highly-Ordered Nanosheets
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Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
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Last Updated: May 12, 2025

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Solid-phase Submonomer Synthesis of Peptoid Polymers and their Self-Assembly into Highly-Ordered Nanosheets
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Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
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Area of Science:

  • Inorganic Chemistry
  • Materials Science
  • Crystallography

Background:

  • Coordination polymers offer diverse structural motifs and properties.
  • Nickel-based materials are explored for various applications.
  • Designing complex organic ligands is crucial for novel coordination polymer synthesis.

Purpose of the Study:

  • To synthesize and characterize a novel Ni-based coordination polymer.
  • To investigate the crystal structure and coordination geometry of the new material.
  • To understand the role of different ligands in the polymer's architecture.

Main Methods:

  • Chemical synthesis of the Ni-based coordination polymer.
  • Single-crystal X-ray diffraction for structural analysis.
  • Coordination geometry analysis of Ni(II) ions.

Main Results:

  • Successful synthesis of Ni-BIBT-BINDI with a bamboo-like crystal structure.
  • Ni(II) ions exhibit distorted octahedral coordination with N and O atoms.
  • Ni-O bonds form the polymer backbone, while Ni-N bonds connect BIBT ligands as 'leaves'.

Conclusions:

  • The study reports a novel Ni-based coordination polymer with a unique hierarchical structure.
  • The structural analysis reveals specific coordination preferences of Ni(II) ions.
  • The findings contribute to the understanding of structure-property relationships in coordination polymers.