Related Experiment Video
Updated: Feb 11, 2026
08:49
Organic Structure-directing Agent-free Synthesis for *BEA-type Zeolite Membrane
Published on: February 22, 2020
14.7K
Molecular Model for Aluminophosphates Containing Fluoride as a Structure-Directing and Mineralizing Agent
Yu Yang1, Jiri Pinkas1, Martina Schäfer1
1Institut für Anorganische Chemie der Universität, Tammannstrasse 4, D-37077 Göttingen (Germany), Fax: (+49) 551-393373.
Angewandte Chemie (International Ed. in English)
|May 2, 2018
Summary
This study introduces compound 1, featuring unique structural units like tricyclic capped six-rings and double four-rings. Its reactive centers suggest potential as a precursor for synthesizing novel microporous aluminophosphates.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Crystallography
Background:
- Layered and three-dimensional alumino- and gallophosphates are important functional materials.
- Understanding novel structural motifs is key to developing new materials with tailored properties.
Purpose of the Study:
- To characterize the novel compound 1 and its unique structural features.
- To evaluate the potential of compound 1 as a precursor for synthesizing microporous aluminophosphates.
Main Methods:
- Single-crystal X-ray diffraction to determine the crystal structure of compound 1.
- Analysis of structural motifs, including tricyclic capped six-rings (C6R), double four-rings (D4R), and Al(μ-F)2Al units.
Main Results:
- Compound 1 exhibits a unique structure incorporating C6R, D4R, and Al(μ-F)2Al units.
- These structural features are closely related to motifs found in known layered and 3D aluminophosphates.
- The presence of several reactive centers in compound 1 was identified.
Conclusions:
- Compound 1 possesses a novel structure with potential for materials synthesis.
- The identified reactive centers make compound 1 a promising precursor for the synthesis of microporous aluminophosphates.
Related Concept Videos
01:18Structure of Benzene: Molecular Orbital Model
12.7K
According to the molecular orbital (MO) model, benzene has a planar structure with a regular hexagon of six sp2 hybridized carbons. As shown in Figure 1, each carbon is bonded to three other atoms with C–C–C and H–C–C bond angles of 120°. The C–H bond length is 109 pm, and the C–C bond length is 139 pm which is midway between the single bond length of sp3 hybridized carbons (154 pm) and sp2 hybridized carbons (133 pm).
12.7K
02:00Molecular Models
43.8K
Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
43.8K
02:34Molecular Structure and Acidity
21.6K
An acid can be deprotonated to form a conjugate base or an anion. If the produced anion is more stable, then the acid is stronger. On the contrary, if the anion is unstable, then the acid is weaker. Hence, to determine the acidity of the compound, the stability of its conjugate base is studied using various factors.
The size effect explains the change in atomic size on acidity. When comparing the acids formed from elements that belong to the same column in the periodic table, their atomic sizes...
The size effect explains the change in atomic size on acidity. When comparing the acids formed from elements that belong to the same column in the periodic table, their atomic sizes...
21.6K
01:30Adrenergic Agonists: Direct-Acting Agents
2.9K
Drugs that mimic the action of endogenous catecholamines like noradrenaline and adrenaline are called adrenergic agonists or sympathomimetics. Based on their mechanism of action, sympathomimetics can be classified as direct-, indirect-, or mixed-acting sympathomimetics. Direct-acting adrenergic agonists activate adrenoceptors without affecting presynaptic neurons, making them independent of neuronal catecholamine-depleting agents like reserpine and guanethidine.
These agents can be classified...
These agents can be classified...
2.9K
02:34Water and Mineral Acquisition
35.9K
Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.
35.9K
03:05Acid Strength and Molecular Structure
33.1K
Binary Acids and Bases
In the absence of any leveling effect, the acid strength of binary compounds of hydrogen with nonmetals (A) increases as the H-A bond strength decreases down a group in the periodic table. For group 17, the order of increasing acidity is HF < HCl < HBr < HI. Likewise, for group 16, the order of increasing acid strength is H2O < H2S < H2Se < H2Te. Across a row in the periodic table, the acid strength of binary hydrogen compounds increases with increasing...
In the absence of any leveling effect, the acid strength of binary compounds of hydrogen with nonmetals (A) increases as the H-A bond strength decreases down a group in the periodic table. For group 17, the order of increasing acidity is HF < HCl < HBr < HI. Likewise, for group 16, the order of increasing acid strength is H2O < H2S < H2Se < H2Te. Across a row in the periodic table, the acid strength of binary hydrogen compounds increases with increasing...
33.1K