Synthesis, crystal structure and properties of magnesium and calcium salts of p-anisic acid

Dhavskar, Kiran T; Bhargao, Pooja H.; Srinivasan, Bikshandarkoil R.

doi:10.1007/s12039-016-1037-9

Cited by 8 publications

(3 citation statements)

References 6 publications

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“…Thus, specifically for Ca 2+ , monodentate coordination with one carboxylate O atom and hydrogen bonded water, bidentate coordination, with both carboxylate O atoms, or bridging (see Figure 6a-c) are notable [82]. On the other hand, a major difference in bonding mode with carboxylic acids in the case of magnesium is the formation of uncoordinated ionic species of the form shown in Figure 6d [87]. The crystal structure of the magnesium complex of p-anisic acid (4-methoxybenzoic acid) contains a layer structure of alternating [Mg(H 2 O) 6 ] 2+ cations and p-anisate anions with the lattice water functioning as a link between the layers.…”

Section: Interfacial Behavior Of Ions and Metal Ion-carboxylate Bondingmentioning

confidence: 99%

Section: Interfacial Behavior Of Ions and Metal Ion-carboxylate Bondingmentioning

confidence: 99%

“…The crystal structure of the magnesium complex of p-anisic acid (4-methoxybenzoic acid) contains a layer structure of alternating [Mg(H2O)6] 2+ cations and p-anisate anions with the lattice water functioning as a link between the layers. On the other hand, the monohydrated Ca(II) salt is a two-dimensional coordination polymer [87]. The comparative behavior between Ca 2+ and Mg 2+ interactions at carboxylate monolayers has also been studied by Tang et al using vibrational sum frequency generation spectroscopy [88,89].…”

Section: Colloids Interfacesmentioning

confidence: 99%

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Metal Ion Interactions with Crude Oil Components: Specificity of Ca2+ Binding to Naphthenic Acid at an Oil/Water Interface

Taylor

Chu

2018

Colloids and Interfaces

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Abstract:On the basis of dynamic interfacial tension measurements, Ca 2+ has been shown specifically to interact with naphthenic acid (NA) at the n-heptane/water interface, consistent with NA adsorption followed by interfacial complexation and formation of a more ordered interfacial film. Optimum concentrations of Ca 2+ and NA have been found to yield lower, time-dependent interfacial tensions, not evident for Mg 2+ and Sr 2+ or for several alkali metal ions studied. The results reflect the specific hydration and coordination chemistry of Ca 2+ seen in biology. Owing to the ubiquitous presence of Ca 2+ in oilfield waters, this finding has potential relevance to the surface chemistry underlying crude oil recovery. For example, "locking" acidic components at water/oil interfaces may be important for crude oil emulsion stability, or in bonding bulk oil to mineral surfaces through an aqueous phase, potentially relevant for carbonate reservoirs. The relevance of the present results to low salinity waterflooding as an enhanced crude oil recovery technique is also discussed.

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Section: Interfacial Behavior Of Ions and Metal Ion-carboxylate Bondingmentioning

confidence: 99%

Section: Interfacial Behavior Of Ions and Metal Ion-carboxylate Bondingmentioning

confidence: 99%

Section: Colloids Interfacesmentioning

confidence: 99%

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Metal Ion Interactions with Crude Oil Components: Specificity of Ca2+ Binding to Naphthenic Acid at an Oil/Water Interface

Taylor

Chu

2018

Colloids and Interfaces

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Calcium‐Based Metal–Organic Frameworks and Their Potential Applications

Xian

Lin

Wang

et al. 2020

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Metal-organic frameworks (MOFs) built on calcium metal (Ca-MOFs) represent a unique subclass of MOFs featuring high stability, low toxicity, and relatively low density. Ca-MOFs show considerable potential for molecular separations, electronic, magnetic, and biomedical applications, although they are not investigated as extensively as transition metal-based MOFs. Compared to MOFs made of other groups of metals, Ca-MOFs may be particularly advantageous for certain applications such as adsorption and storage of light molecules because of their gravimetric benefit, and drug delivery due to their high biocompatibility. This review intends to provide an overview on the recent development of Ca-MOFs, including their synthesis, crystal structures, important properties, and related applications. Various synthetic methods and techniques, types of building blocks, structure and porosity features, selected physical properties, and potential uses will be discussed and summarized. Representative examples will be illustrated for each type of important applications with a focus on their structure-property relations.ethylene/acetylene, propane/propylene) through highly selective size exclusion mechanism, [6,11,24] which has not been achieved by conventional adsorbent materials. The potential uses of MOFs depend on their pore structure (pore size/pore shape), surface functionality, as well as the type of metal centers and ligands.Calcium-based metal-organic frameworks (Ca-MOFs) represent a subgroup of MOFs with calcium as metal centers. Unlike MOFs built on transition and post-transition metals (Zr, Fe, Co, Ni, Cu, Zn, etc.) which tend to form commonly observed SBUs and topology and, therefore allow for successful design and implementation of targeted structure and functionality, the prediction of coordination geometry and structural topology of Ca-MOFs are much more challenging. This could be attributed to the fact that the bonding interactions between calcium and organic ligands (commonly carboxylates or phosphates) are more ionic, and thus the coordination mode of calcium and the topology of Ca-MOFs largely rely on the nature of the organic ligands as well as the synthetic conditions. However, Ca-MOFs possess several advantages compared to those built on transition metals: 1) Ca-MOFs generally feature high thermal stability because of its high electropositivity which leads to strong, ioniclike bonds with organic ligands (e.g., carboxylates). 2) Calcium is earth-abundant (3.4% of Earth's crust) and nontoxic, making Ca-MOFs relatively inexpensive and environmentally safe, thus especially promising for biological related applications. 3) The lightweight of calcium metal offers gravimetric benefit for gas adsorption/storage related applications.To date, more than 150 Ca-MOFs have been reported (Table 1). These MOFs bear different structural features and have been evaluated for various applications, including molecular separation, drug delivery and controlled release, chemical sensing, and proton conductivity, to name a few. In this...

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Thermodynamic models for determination of solid-liquid equilibrium of the 4-methoxybenzoic acid in different solvents with solubility parameters and interaction energy aided analyses

Liu

Wang

et al. 2021

Journal of Molecular Liquids

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Synthesis, crystal structure and properties of magnesium and calcium salts of p-anisic acid

Cited by 8 publications

References 6 publications

Metal Ion Interactions with Crude Oil Components: Specificity of Ca2+ Binding to Naphthenic Acid at an Oil/Water Interface

Metal Ion Interactions with Crude Oil Components: Specificity of Ca2+ Binding to Naphthenic Acid at an Oil/Water Interface

Calcium‐Based Metal–Organic Frameworks and Their Potential Applications

Thermodynamic models for determination of solid-liquid equilibrium of the 4-methoxybenzoic acid in different solvents with solubility parameters and interaction energy aided analyses

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