Related Experiment Video
Updated: Jul 19, 2025
13:08
A Salt-Templated Synthesis Method for Porous Platinum-based Macrobeams and Macrotubes
Published on: May 18, 2020
8.7K
Hexagonal crystalline Magnus' green salt analogues prepared from hydroxy-functionalised Pt and Pd complexes
Mohammad Rasel Mian1, Unjila Afrin1, Shinya Takaishi1
1Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan. hiroaki.iguchi@chembio.nagoya-u.ac.jp.
Dalton Transactions (Cambridge, England : 2003)
|August 14, 2023
Summary
New Magnus' green salt (MGS) analogues featuring a novel ligand produced unusually large, hexagonal crystals. This breakthrough offers new strategies for creating molecular nanowires and large MGS crystals.
Area of Science:
- Coordination Chemistry
- Materials Science
- Crystallography
Background:
- Magnus' green salt (MGS) analogues are coordination compounds with potential applications in materials science.
- Previous MGS analogues have faced limitations in crystal size and structural control.
- Developing new MGS analogues with enhanced properties is crucial for advancing molecular materials.
Purpose of the Study:
- To synthesize and characterize novel Magnus' green salt (MGS) analogues using a functionalized ligand.
- To investigate the structural properties, including crystal habit and chain arrangement.
- To explore the impact of the new ligand on crystal growth and hydrophilicity.
Main Methods:
- Synthesis of palladium (Pd) and platinum (Pt) MGS analogues with a (2S,3S)-2,3-diaminobutane-1,4-diol (dabdOH) ligand.
- Single-crystal X-ray diffraction analysis to determine crystal structure and intermolecular interactions.
- Characterization of crystal morphology, color, and hydrogen bonding networks.
Main Results:
- Obtained hexagonal plate crystals of MGS analogues [M(dabdOH)2][MCl4]·2H2O (M = Pd, Pt).
- Observed unprecedented large crystal sizes and hexagonal morphology attributed to the dabdOH ligand.
- Revealed an unusual trigonal grade separation of chain complexes and extensive hydrogen bonding networks.
Conclusions:
- The novel dabdOH ligand promotes the formation of large, hexagonal MGS crystals, exceeding previous reports.
- The observed trigonal grade-separated chain structure offers insights into crystal growth mechanisms.
- This strategy paves the way for preparing large MGS crystals and constructing trigonal grade-separated nanowires.
More Related Videos
19:58Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
9.7K
10:42Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
Published on: December 29, 2016
10.7K
Related Concept Videos
02:42Valence Bond Theory
8.7K
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...
8.7K
02:42Ionic Crystal Structures
14.4K
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...
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...
14.4K
03:02Colors and Magnetism
11.9K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
11.9K
02:46Crystal Field Theory - Tetrahedral and Square Planar Complexes
42.9K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
42.9K
02:58Crystal Field Theory - Octahedral Complexes
26.8K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
26.8K
02:54Coordination Compounds and Nomenclature
21.6K
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...
21.6K