Role of boron-containing ionic liquid in the synthesis of manganese borophosphate with extra-large 16-ring pore openings

Yang, Miao; Yan, Peifang; Xu, Feifei; Ma, Jian‐Nong; Welz‐Biermann, Urs

doi:10.1016/j.micromeso.2011.06.004

Cited by 10 publications

(7 citation statements)

References 37 publications

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“…The liquid densities of [BMIM][BOB] and [HMIM][BOB] ILs are (1306.86 ± 8.65) and (1261.04 ± 9.03) kg/m 3 , respectively, at 323 K. These computational results are quite consistent with available experimental density data of 1295.1 and 1239.5 kg/m 3 of these two ILs determined at the same temperature. 50,59 In addition, the experimental densities of [DMIM][BOB] are 1174 kg/m 3 at 293 K and 1119 kg/m 3 at 363 K, respectively, which are compatible with the corresponding computational result obtained at 323 K as listed in Table 1. The agreement between these experimental data and current atomistic simulation results is remarkably good with a maximum deviation of approximately 2.1%.…”

Section: Computational Results and Discussionsupporting

confidence: 85%

Competitive Microstructures Versus Cooperative Dynamics of Hydrogen Bonding and π-Type Stacking Interactions in Imidazolium Bis(oxalato)borate Ionic Liquids

Wang

2018

J. Phys. Chem. B

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The delicate trade-off between hydrogen bonding and π-type coordinations plays a pivotal role in stabilizing molecular structures in ionic liquids bearing multiple hydrogen bonding sites and heteroaromatic ring planes. By performing extensive atomistic simulations, we have investigated the effect of aliphatic chain length in imidazolium cations on liquid morphologies, hydrogen bonding and π-type structures, and the corresponding dynamical quantities in imidazolium bis(oxalato)borate ionic liquids. The liquid morphologies are characterized by segregated apolar clusters (domains) within polar framework in liquid samples with short aliphatic chains in imidazolium cations and are transformed to spongelike polar and apolar arrangements in liquid matrices with lengthening aliphatic chains in imidazolium cations. Such a striking evolution of liquid morphologies of imidazolium bis(oxalato)borate ionic liquids is qualitatively characterized by total and partial X-ray scattering static structural factors. Preferential hydrogen bonds and distinctive π-type coordinations among imidazolium and oxalato ring planes coexist in ionic liquid matrices. A gradual addition of methylene units to imidazolium cations leads to a substantial increase in hydrogen bonding strength, which, however, results in decreased π-type coordinations between imidazolium and oxalato ring planes, indicating distinct competitive structural characteristics between hydrogen bonding and π-type associations between imidazolium and oxalato ring planes. A prevalent cooperative feature is observed in continuous and intermittent hydrogen bonding dynamics and in translational and reorientational dynamics of imidazolium and oxalato ring planes with lengthening aliphatic chains in imidazolium cations. The competitive structural trade-off and cooperative dynamical interplay of hydrogen bonding and π-type interactions between imidazolium cations and bis(oxalato)borate anions are intrinsically correlated with short-range collective interactions between alkyl units in imidazolium cations and long-range Coulombic interactions between imidazolium and oxalato ring planes in heterogeneous ionic environments.

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Section: Computational Results and Discussionsupporting

confidence: 85%

Competitive Microstructures Versus Cooperative Dynamics of Hydrogen Bonding and π-Type Stacking Interactions in Imidazolium Bis(oxalato)borate Ionic Liquids

Wang

2018

J. Phys. Chem. B

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“…The utilization of a boron containing IL, 1-etyl-3-methylimidazolium bis(oxalate)borate ([C 2 mim][BOB]) as both reaction solvent and boron source gave rise to two new, isotypic borophophates (NH 4 ) 7 M 4 (H 2 O)[B 2 P 4 O 15 (OH) 2 ] 2 [H 2 PO 4 ][HPO 4 ] (M = Co, Mn) with extra-large 16-ring channels. , The structure of the two compounds is characterized by a mixed-branched 6-ring [B 2 P 4 O 15 (OH) 2 ] 2 6– unit built of vertices-sharing BO 4 and PO 4 groups as FBUs and the connection mode is cis . A borophosphate anion with trans- conformation [B 4 P 8 O 28 (OH) 6 ] 10– can be found in K 6 Cu 2 [B 4 P 8 O 28 (OH) 6 ] .…”

Section: Synthesismentioning

confidence: 99%

New Developments in the Synthesis, Structure, and Applications of Borophosphates and Metalloborophosphates

Li¹,

Verena‐Mudring

2016

Crystal Growth & Design

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An overview about the recent key developments of borophosphate chemistry since 2007 is given. The structural chemistry (B:P ratio, fundamental building units (FBUs), dimensionality and metal coordination), possible physical, and optical and chemical properties are discussed in detail in terms of materials obtained by traditional solid-state reactions, flux methods, and hydrothermal and ionothermal reactions. Borophosphates (BPOs) exhibit a tremendous structural variety. Which structure is formed depends critically on the chosen starting materials and synthetic conditions. For example, for metalloborophosphates (MBPOs) changing the metal-precursor can result in the formation of a new BPO. MBPOs containing chains or extended networks of interconnected transition metal-oxide polyhedra exhibit remarkable magnetic coupling schemes and electronic behavior aside from interesting optical behavior and catalytic properties. The exploration of novel fundamental building units (FBUs), such as FBUs with P−O− P bonds and two-dimensional mixed-coordinated anionic partial structures, that have not been observed previously advocates the great potential in designing novel functional BPOs for advanced applications. While many BPOs initially obtained from conventional synthetic methods can be prepared by hydrothermal synthesis, it has recently been realized that BPOs obtained by ionothermal methods often could not be synthesized by conventional synthetic methods. Thus, novel synthetic approaches offer access to new materials.

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“…Yang et al prepared a series of boron-containing ILs 1-alkyl-3-methylimidazolium bis(oxalato)borates (Fig. 2.4) and used them as B-O source to synthesize metal borophosphates [46,47]. Though strictly speaking, the synthesis route they employed is not ionothermal, Yang et al illustrated an inspirational example of the application of designed ILs to synthesize molecular sieves.…”

Section: Stabilitymentioning

confidence: 99%

Ionothermal Synthesis of Molecular Sieves

Tian

Liu

2016

Green Chemistry and Sustainable Technology

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The synthesis of molecular sieves in ionic liquid or deep eutectic solvent is termed ionothermal synthesis. It involves an ionic reaction environment with extremely low volatility, and thus, can avoid the safety risks of hydro/solvothermal reactions, and bring great convenience and flexibility to both the synthesis of molecular sieves and the study on their formation mechanisms. In this chapter, first introduced are the special physicochemical properties of ionic liquids and deep eutectic solvents, and the distinctive opportunities brought by them to synthesize molecular sieves. A detailed methodological illustration of ionothermal synthesis technique is provided subsequently. The molecular sieves ionothermally synthesized are summarized by their features such as composition, structure, porosity and morphology. Then follows a review on the fascinating structure-directing effect of various guest species in ionothermal synthesis. Finally, a prospect is given on the future development of ionothermal synthesis.

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Role of boron-containing ionic liquid in the synthesis of manganese borophosphate with extra-large 16-ring pore openings

Cited by 10 publications

References 37 publications

Competitive Microstructures Versus Cooperative Dynamics of Hydrogen Bonding and π-Type Stacking Interactions in Imidazolium Bis(oxalato)borate Ionic Liquids

Competitive Microstructures Versus Cooperative Dynamics of Hydrogen Bonding and π-Type Stacking Interactions in Imidazolium Bis(oxalato)borate Ionic Liquids

New Developments in the Synthesis, Structure, and Applications of Borophosphates and Metalloborophosphates

Ionothermal Synthesis of Molecular Sieves

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