SYNTHESIS, STRUCTURE, AND OPTICAL PROPERTIES OF THE LANTHANUM(III) CATIONIC COORDINATION POLYMER WITH 1,4-DIAZABICYCLO[2.2.2]OCTANE N,N′-DIOXIDE
Синтез, строение и оптические свойства катионного координационного полимера лантана(III) с 1,4‑диазабицикло[2.2.2]октаном N,N′‑диоксидом
2023-02-01
SCID: 54.1/3vh8reew
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1,4-diazabicyclo[2.2.2]octane N,N′-dioxide (odabco)diffuse reflectance spectroscopylanthanum(III) cationic coordination polymerprimitive cubic (pcu) topologysingle crystal X-ray diffraction
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Abstract (AI)
The first example of a coordination polymer with a triply charged metal ion is obtained based on the conformationally mobile bridging ligand 1,4-diazabicyclo[2.2.2]octane N,N′-dioxide (odabco). Its structure is characterized by single crystal X-ray diffraction. The compound has the formula [La(odabco)3]Cl3·xH2O (1) with a variable hydration number and is composed of six-coordinated octahedral La3+ sites. The 3D cationic coordination lattice of 1 has a primitive cubic (pcu) topology and contains isolated voids with a total specific volume of 28% filled with chloride anions and water molecules. The compound is characterized by powder XRD and elemental analysis. The absence of absorption maxima in the visible and UV ranges up to 270 nm is shown by diffuse reflectance spectroscopy for 1.
Key Findings
1
Compound formula determined as [La(odabco)3]Cl3·xH2O with variable hydration number.
2
Diffuse reflectance spectroscopy shows no absorption maxima in the visible and UV ranges up to 270 nm.
3
Isolated voids are occupied by chloride anions and water molecules.
4
Powder XRD and elemental analysis confirm the compound's composition and phase.
5
Single-crystal X-ray diffraction shows six-coordinated octahedral La3+ sites forming a 3D cationic coordination lattice.
6
Synthesis and structural characterization of the first coordination polymer containing a triply charged metal ion using odabco ligand.
7
The 3D lattice has primitive cubic (pcu) topology and contains isolated voids occupying 28% of the specific volume.
Research Object
Lanthanum(III) cationic coordination polymer [La(odabco)3]Cl3·xH2O (coordination polymer with odabco ligand)
Research Subject
Synthesis, crystal structure (including coordination environment, topology, voids and hydration) and optical (diffuse reflectance/absorption) properties of the La3+ coordination polymer
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2023-02-01
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