Lanthanide trifluoromethyltricyanoborates: Synthesis, crystal structures and thermal properties

Ribbeck, Tatjana; Kerpen, Christoph; Low, D.C.; Sedykh, Alexander E.; Müller‐Buschbaum, Klaus; Ignat’ev, Nikolai; Finze, Maik

doi:10.1016/j.jfluchem.2018.12.013

Cited by 5 publications

(4 citation statements)

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“…In summary, all H atoms and all cyano groups take part in the H-bonded network. The atomic distances are indicative for moderately strong H bonds. , The H 2 O–H···N distances are similar to those reported for the related oxonium salts (H 3 O)[B(CN) 4 ], (H 3 O)[BF(CN) 3 ], (H 3 O)[BH(CN) 3 ], and (H 3 O)[CF 3 B(CN) 3 ] …”

Section: Resultssupporting

confidence: 79%

“…The atomic distances are indicative for moderately strong H bonds. 99,100 The H 37 The oxonium salt 1 shows a sharp singlet at −20.4 ppm in the 11 B NMR spectrum (Figure 2). The 13 C NMR signal of the cyano groups is a quartet at 128.9 ppm with a 13 C− 11 B coupling constant of 70.5 Hz.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Cyanoborate anions are known to be important building blocks for materials chemistry, for example, for metal organic frameworks, ionic liquids (ILs), or metal complexes due to their readily tunable properties. , For this reason, their synthesis and functionalization as well as the modification of their chemical and physical properties has been in the focus of interest since almost 2 decades, when first syntheses of salts of the homoleptic tetracyanoborate anion [B(CN) 4 ] − ( TCB ) were published. , Since then, other syntheses for TCB salts have been developed, which include a straightforward solid-state sinter process , and efficient Lewis acid-catalyzed reactions. − Related salts of the monohydridotricyanoborate anion [BH(CN) 3 ] − ( MHB ), ,− the dihydridodicyanoborate anion [BH 2 (CN) 2 ] − ( DHB ), ,− and the monofluorotricyanoborate anion [BF(CN) 3 ] − ( MFB ) ,,,,,− have been intensively studied in recent years as well. , Further examples of tricyanoborate anions of the general formula [RB(CN) 3 ] − are perfluoroalkyl, − per- and polyfluoroaryl, alkyl, alkoxy, , and chloro functionalized anions (Figure ).…”

Section: Introductionmentioning

confidence: 99%

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Hydroxytricyanoborate Anion: Synthetic Aspects and Structural, Chemical, and Spectroscopic Properties

et al. 2019

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In recent years, salts of the hydridotricyanoborate anion [BH(CN)3]− (MHB) have become readily available. In spite of the unusually high stability of the MHB anion, it can be used as a valuable starting material for the preparation of selected tricyanoborates, for example, the boron-centered nucleophile B(CN)3 2–. A further unprecedented example is the hydroxytricyanoborate anion [B(OH)(CN)3]− that is accessible by oxidation of (H3O)MHB with elemental bromine in water. The Brønsted acid (H3O)[B(OH)(CN)3] was isolated as a crystalline solid. It serves as a versatile starting material for the synthesis of coordination compounds, metal salts, and ionic liquids. The [B(OH)(CN)3]− anion shows a rich coordination chemistry and a high tendency to form hydrogen-bonded motifs as demonstrated by a series of salts with different types of cations. Furthermore, the [B(OH)(CN)3]− anion itself serves as starting material for new tricyanoborates such as the unusual trianion [B{OB(CN)3}3]3– and the silylated anions [B(OSiR3)(CN)3]− (R = Me, Et, Ph). Some of these follow-up products have been characterized by single-crystal X-ray diffraction, e.g., [nBu4N]3[B{OB(CN)3}3] and [nBu4N][B(OSiPh3)(CN)3].

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Section: Resultssupporting

confidence: 79%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hydroxytricyanoborate Anion: Synthetic Aspects and Structural, Chemical, and Spectroscopic Properties

et al. 2019

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“…As it is known from the reported results, the initial material granules, under certain conditions, are able to maintain the original shape and size in the thermal decomposition process [28][29][30]. At the same time, the compounds with the stoichiometric lanthanide ion content attract attention in order to find efficient luminescent materials with low concentration quenching and to investigate specific mechanisms of luminescence quenching in them [31][32][33][34][35][36][37][38][39][40]. At the same time, the consideration of lanthanide-containing materials cannot be restricted only by their luminescent properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Samarium OxysulfateSm2O2SO4 in the High-Temperature Oxidation Reaction and Its Structural, Thermal and Luminescent Properties

et al. 2020

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The oxidation process of samariumoxysulfide was studied in the temperature range of 500–1000 °C. Our DTA investigation allowed for establishing the main thermodynamic (∆Hºexp = −654.6 kJ/mol) and kinetic characteristics of the process (Ea = 244 kJ/mol, A = 2 × 1010). The enthalpy value of samarium oxysulfate (ΔHºf (Sm2O2SO4(monocl)) = −2294.0 kJ/mol) formation was calculated. The calculated process enthalpy value coincides with the value determined in the experiment. It was established that samarium oxysulfate crystallizes in the monoclinic symmetry class and its crystal structure belongs to space group C2/c with unit cell parameters a = 13.7442 (2), b = 4.20178 (4) and c = 8.16711 (8)Å, β = 107.224 (1)°, V = 450.498 (9)Å3, Z = 4. The main elements of the crystalline structure are obtained and the cation coordination environment is analyzed in detail. Vibrational spectroscopy methods confirmed the structural model adequacy. The Sm2O2SO4luminescence spectra exhibit three main bands easily assignable to the transitions from 4G5/2 state to 6H5/2, 6H7/2, and 6H9/2 multiplets.

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Cyanoborates

Ignat’ev

Finze

2019

Eur J Inorg Chem

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Cyanoborate chemistry has emerged to an important topic during the last two decades, beginning with two independent reports on the successful synthesis of the tetracyanoborate anion [B(CN) 4 ]in 2000. A wealth of cyanoborate anions with different substituents in addition to CN group(s) bonded to boron, i.e. hydrogen, halogen, aryl, alkenyl, alkyl, perfluoroalkyl, and alkoxy, have been developed, which enable the tuning of properties of compounds and materials based on them. The readily accessible alkali metal cyanoborates are convenient starting materials for the preparation of cyanoborates with various organic, inorganic, and metal cations as well as cyanoborate coordination compounds. A focus has been on low-[a] Julius-Maximilians-Universität Würzburg,

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Lanthanide trifluoromethyltricyanoborates: Synthesis, crystal structures and thermal properties

Cited by 5 publications

References 70 publications

Hydroxytricyanoborate Anion: Synthetic Aspects and Structural, Chemical, and Spectroscopic Properties

Hydroxytricyanoborate Anion: Synthetic Aspects and Structural, Chemical, and Spectroscopic Properties

Synthesis of Samarium OxysulfateSm2O2SO4 in the High-Temperature Oxidation Reaction and Its Structural, Thermal and Luminescent Properties

Cyanoborates

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