Composition space analysis of templated molybdates

Nelson, James H.; Johnston, Alexander R.; Sarjeant, Amy Narducci; Norquist, Alexander J.

doi:10.1016/j.solidstatesciences.2007.04.001

Cited by 23 publications

(21 citation statements)

References 24 publications

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“…The dependency of the topology of the Mo-POMs entities upon the pH is well known [12], but recent studies reported equally the influence of the content of organoammonium cations, when the pH is maintained constant [13]. However, similarly as we observed for the [Mo 7 O 24 ] 6À / DABCO system, the pH is the main parameter to stabilize selectively the different Mo-POMs blocks in compounds 1-3.…”

Section: Description Of the [Mo 7 O 24 ] 6à /Piperazine Systemsupporting

confidence: 71%

Reinvestigation of hybrid organic–inorganic materials based on molybdate and piperazininum cations: Influence of the synthesis conditions on the chemical composition and characterizations of the photochromic properties

Coué

Dessapt²,

Bujoli-Doeuff³

et al. 2008

Journal of Solid State Chemistry

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Section: Description Of the [Mo 7 O 24 ] 6à /Piperazine Systemsupporting

confidence: 71%

Reinvestigation of hybrid organic–inorganic materials based on molybdate and piperazininum cations: Influence of the synthesis conditions on the chemical composition and characterizations of the photochromic properties

Coué

Dessapt²,

Bujoli-Doeuff³

et al. 2008

Journal of Solid State Chemistry

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“…In addition, heterocyclic surfactants such as pyridinium ([C 5 H 5 N(C n H 2n+1 )] + (C n py), Figure 6e) [118,[120][121][122][127][128][129], pyridazinium ([C 4 H 4 N 2 (C n H 2n+1 )] + (C n pda), Figure 6f) [128], and methylimidazolium ([(C n H 2n+1 )C 3 H 3 N 2 (CH 3 )] + (C n mim), Figure 6g) [123,124] are employed. Double-headed surfactants employed are alkyldiammonium derived from diamine ([H 3 N(CH 2 ) n NH 3 ] 2+ (H 3 NC n NH 3 ), Figure 6d) [132,133] or synthetic bolaamphiphiles having two charged heterocyclic moieties [134][135][136].…”

Section: Hybrid Single Crystals Composed From Polyoxometalates and Sumentioning

confidence: 99%

Inorganic–Organic Hybrid Surfactant Crystals: Structural Aspects and Functions

Ito

2016

Crystals

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Hybrid single crystals consisting of an organic surfactant and an inorganic moiety are promising functional materials. Layered crystals composed from alternate inorganic and surfactant layers are obtained by the template effect of long alkyl chain moiety. The composition, crystal packing, and molecular arrangement of the hybrid single crystals are controllable by changing the inorganic constituent and the surfactant molecular structure. The types of hybrid surfactant single crystals are twofold: (i) crystals consisting of discrete inorganic cation coordinated by ligands having amphiphilic moiety; and (ii) crystals comprising a surfactant cation and a discrete inorganic anion including polyoxometalate (POM) oxide clusters. The POM-surfactant hybrid single crystals are rather rare, and therefore promising as unprecedented functional materials. Their structural variation and functional properties are discussed.

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“…The Mo-O bond lengths and O-Mo-O angles, obtained by structure determination from powder diffraction data and then refined using a total energy minimization approach (Tables 2 and 4), are in both cases well within the ranges characteristic for similar structures (cf. Zhang et al, 2004;Nelson et al, 2007;Guillou & Fé rey, 1999;Dessapt et al, 2010) and can formally be assigned to one of the three groups reflecting different types of O-atom placement within the polyanion. Using (I) as an example, the shortest bond lengths (1.697-1.728 Å ) correspond to the terminal Mo O bonds (atoms O3, O4 and O7), while the medium (1.870-1.997 Å ) and long bonds (2.164-2.598 Å ) include 2 (atoms O1, O2 and O6) and 3 (atoms O5 and O8) types of O atoms, bound to one, two or three Mo atoms, respectively.…”

Section: Commentmentioning

confidence: 99%

Bis(4-methylanilinium) and bis(4-iodoanilinium) pentamolybdates from laboratory X-ray powder data and total energy minimization

Oszajca

Smrčok

Łasocha

2013

Acta Crystallogr C Cryst Struct Commun

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The crystal structures of poly[bis(4-methylanilinium) [tetra-μ3-oxido-hexa-μ2-oxido-hexaoxidopentamolybdenum(VI)]], {(C7H10N)2[Mo5O16]}n, (I), and poly[bis(4-iodoanilinium) [tetra-μ3-oxido-hexa-μ2-oxido-hexaoxidopentamolybdenum(VI)]], {(C6H7IN)2[Mo5O16]}n, (II), were determined from laboratory X-ray powder diffraction data using the direct-space parallel-tempering approach and refined by total energy minimization in the solid state. Both compounds adopt layered structures, in which layers of the inorganic {[Mo5O16](2-)}n polyanion alternate with layers of the organoammonium cations parallel to the (100) plane. The asymmetric units contain three Mo atoms (one situated on a twofold axis, Wyckoff position 4e), eight O atoms and one organic cation. Despite the fact that the structure determinations are based on powder diffraction data, due to the total energy minimization approach applied the Mo-O bond lengths can formally be assigned to one of the three groups, reflecting different types of O-atom placement within the polyanion. The cations form relatively strong N-H...O hydrogen bonds, anchoring one end of the organic molecules to both terminal and shared O atoms. The interactions involving the opposite end of the benzene rings are much weaker and include C-H...O and C-H...π bonds in (I) and an I...O halogen bond in (II). Mutual rotation of the benzene rings in both structures leads to the formation of a C-H...H-C dihydrogen bond, with H-atom separations of 1.95 Å in (I) and 2.12 Å in (II). Differential scanning calorimetry measurements show that the interactions between the inorganic and organic layers are stronger in (I) than in (II).

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Composition space analysis of templated molybdates

Cited by 23 publications

References 24 publications

Reinvestigation of hybrid organic–inorganic materials based on molybdate and piperazininum cations: Influence of the synthesis conditions on the chemical composition and characterizations of the photochromic properties

Reinvestigation of hybrid organic–inorganic materials based on molybdate and piperazininum cations: Influence of the synthesis conditions on the chemical composition and characterizations of the photochromic properties

Inorganic–Organic Hybrid Surfactant Crystals: Structural Aspects and Functions

Bis(4-methylanilinium) and bis(4-iodoanilinium) pentamolybdates from laboratory X-ray powder data and total energy minimization

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