Yttrium Coordination Compounds with Nitrilotris(Methylenephosphonic Acid)

Сомов, Н. В.; Чаусов, Ф. Ф.; Ломова, Н. В.; Закирова, Р. М.; Петров, В. Г.; Жиров, Д. К.; Шумилова, Марина Анатольевна

doi:10.1134/s1070328419030096

Cited by 3 publications

(11 citation statements)

References 47 publications

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“…Synthesis and isolation of compounds I – V were performed using the techniques described in Refs . Testing of the samples employed was carried out using powder X‐ray diffraction (PXRD) and elemental analysis.…”

Section: Methodsmentioning

confidence: 99%

“…The single‐crystal X‐ray diffraction (XRD) analysis of compounds II , III and V was described in Refs . and provided as Supporting Information.…”

Section: Methodsmentioning

confidence: 99%

“…When an Y 3+ ion interacts with NTP H 6 in acidic environment, the complex [Y{N(CH 2 PO 3 ) 3 H 3 }] · 2H 2 O ( IV ) is formed; its molecular structure and crystal packing could not be defined . The interaction of a Y 3+ ion with NTP at pH = 8–9 in the presence of K + ions leads to formation of the complex K 8 [YH{N(CH 2 PO 3 ) 3 } 2 ] · 15H 2 O ( V ).…”

Section: Introductionmentioning

confidence: 99%

“…The interaction of a Y 3+ ion with NTP at pH = 8–9 in the presence of K + ions leads to formation of the complex K 8 [YH{N(CH 2 PO 3 ) 3 } 2 ] · 15H 2 O ( V ). In this complex the Y atom is coordinated in the distorted octahedron with six O atoms at the vertices and one additional N atom in a cap position above one of the sides (Figure , structure V ).…”

Section: Introductionmentioning

confidence: 99%

“…At two rhombohedron vertices remote from the RE atom there are N atoms, and at the six nearest vertices oxygen atoms are located (Figure , structure II ). The complexes of praseodymium, neodymium, samarium, terbium and gadolinium have similar structure.…”

Section: Introductionmentioning

confidence: 99%

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The Structure of the Dipolar Bond in the Rare Earth Nitrilotris(Methylene Phosphonate)s with Different Oxygen Coordination Symmetries

et al. 2020

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The electronic structure of 16 complex compounds of RE (Y, La–Tb) with the same ligand – nitrilotris(methylenephosphonic acid) [NTP, N(CH2PO3)3H6] and with different coordination symmetries of the RE atom is investigated. The structure of XP‐spectra of a valence band in this area significantly differs for structures with non‐octahedral O‐coordination of the RE atom, on the one hand, and those with pseudo‐octahedral O‐coordination of the RE atom, on the other hand. In the XP‐spectra of non‐octahedral O‐coordination complexes the O2s‐states have a maximum at EB = 24–26 eV and are poorly overlapped with Ln5p‐states. For pseudo‐octahedral O‐coordination structures a wide strip is observed in the field of EB = 20–28 eV corresponding to an overlap M5p‐ and O2s‐states with formation of internal valence molecular orbitals (IVMO). Apparently, in pseudo‐octahedral O‐coordination structures the arrangement of O atoms agrees with the octahedral symmetry of RE p‐orbitals and leads to the formation of IVMO M5p+O2s.

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Section: Methodsmentioning

confidence: 99%

“…The single‐crystal X‐ray diffraction (XRD) analysis of compounds II , III and V was described in Refs . and provided as Supporting Information.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Structure of the Dipolar Bond in the Rare Earth Nitrilotris(Methylene Phosphonate)s with Different Oxygen Coordination Symmetries

et al. 2020

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Magnetic Behavior of Light Lanthanide (La–Tb) in Linear‐Chain Nitrilo‐Tris‐Methylenephosphonates with Different Structures

Lomova,

Chausov,

Dobysheva

et al. 2023

Physica Status Solidi (b)

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The magnetic susceptibility is measured for two series of linear organic–inorganic coordination polymers I‐Ln and II‐Ln (Ln = La–Tb). The structure of the polymers (isostructural in each series I‐Ln and II‐Ln) differs in the length and structure of the bridges and in the nearest environment of the lanthanides. The effective magnetic moments of lanthanide atoms are determined from the magnetic susceptibility. The measured magnetic moments agree with the values characteristic of isolated trivalent 3+ ions for all cases, except for Tb which demonstrates a higher value of 12.25 μB in one of the complexes. An analysis of the X‐ray photoelectron spectrum of Tb 5s makes it possible to estimate the spin magnetic moment of the Tb ion.

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Effect of Different Phosphates on Pyrolysis Temperature-Dependent Carbon Sequestration and Phosphorus Release Performance in Biochar

Bai

et al. 2023

Molecules

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Carbon sequestration is the primary function of biochar. Hence, it is necessary to design biochar with high carbon (C) retention and low C loss. In this study, three P compounds, including KH2PO4, Ca(H2PO4)2, and NH4H2PO4, were premixed with corn stalk (1:4, w/w), aiming to produce biochars (CSB+K, CSB+Ca, and CSB+N) with high C sequestration and slow release of P at three temperatures (300, 500, and 700 °C). The addition of all P sources obviously increased C retention, with the order of NH4H2PO4 (65.6–83.5%) > Ca(H2PO4)2 (60.4–78.2%) > KH2PO4 (50.1–76.1%), compared with the pristine biochar (47.8–73.6%). The addition of Ca(H2PO4)2 and KH2PO4 led to an increase in aromaticity and graphitization, as evidenced by H/C, FTIR, Raman and XPS analysis, whereas an opposite result occurred on CSB+N. Furthermore, all three phosphates reduced C loss of biochars with H2O2 oxidation, and CSB+Ca showed the best effect. Ca(H2PO4)2 and KH2PO4 pretreated biochars had higher resistance to K2Cr2O7 oxidation and thermal treatment. In contrast, the C loss of NH4H2PO4-added biochar at 500 and 700 °C with K2Cr2O7 oxidation was increased by 54% and 36%, respectively. During the pyrolysis process, Ca(H2PO4)2 was transformed into insoluble Ca2P2O7, leading to the lowest P release rate of CSB+Ca. This study indicates that co-pyrolysis of corn stalk and Ca(H2PO4)2 is optimal for increasing C retention, enhancing C stability and improving slow-release performance of P regardless of pyrolysis temperature.

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Yttrium Coordination Compounds with Nitrilotris(Methylenephosphonic Acid)

Cited by 3 publications

References 47 publications

The Structure of the Dipolar Bond in the Rare Earth Nitrilotris(Methylene Phosphonate)s with Different Oxygen Coordination Symmetries

The Structure of the Dipolar Bond in the Rare Earth Nitrilotris(Methylene Phosphonate)s with Different Oxygen Coordination Symmetries

Magnetic Behavior of Light Lanthanide (La–Tb) in Linear‐Chain Nitrilo‐Tris‐Methylenephosphonates with Different Structures

Effect of Different Phosphates on Pyrolysis Temperature-Dependent Carbon Sequestration and Phosphorus Release Performance in Biochar

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