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Updated: May 20, 2026

Discovery and Synthesis Optimization of Isoreticular Al(III) Phosphonate-Based Metal-Organic Framework Compounds Using High-Throughput Methods
Published on: October 6, 2023
catena-Poly[1,2,2-trimethyl-cyclo-pentane-1,3-diammonium [aluminate(III)-μ-(hydrogen phosphato)-μ-phosphato]]
1Department of Chemistry, Bengbu Medical College, Bengbu 233030, People's Republic of China.
Abstract:
In the title compound, {(C(8)H(20)N(2))[Al(HPO(4))(PO(4))]}(n), the Al(III) atom is coordinated by four O atoms from two HPO(4) (2-) and two PO(4) (3-) groups in a distorted tetra-hedral geometry. Each AlO(4) unit shares four O atoms with four adjacent PO(4) units, leading to an anionic chain along [100]. The negative charge of the chain is compensated by doubly protonated camphoric amine cations. N-H⋯O hydrogen bonds connect the cations and the anionic chains. O-H⋯O hydrogen bonds are present in the chain.
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Electrophilic Addition to Alkynes: Halogenation
Halogenation is another class of electrophilic addition reactions where a halogen molecule gets added across a π bond. In alkynes, the presence of two π bonds allows for the addition of two equivalents of halogens (bromine or chlorine). The addition of the first halogen molecule forms a trans-dihaloalkene as the major product and the cis isomer as the minor product. Subsequent addition of the second equivalent yields the tetrahalide.

