Complexes with 6-amino-5-nitroso-2-thiouracil and violuric acid derivatives containing the fac-ReI(CO)3 core: Synthesis, XRD structural and photoluminescence characterization

Illán‐Cabeza, Nuria A.; García-García, Antonio R.; Moreno‐Carretero, Miguel N.

doi:10.1016/j.ica.2010.11.009

Cited by 26 publications

(18 citation statements)

References 30 publications

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“…[15] Other classes of organic compounds showing this phenomenon include e.g. 6-amino-5-nitrosouracil (= imidovioluric acid), [19][20][21] isonitrosomalonamide, [22] oximidoketones, [13] and oximido-oxazolones. [7,10,[23][24][25] Scheme 1.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Structural Investigation of a Complete Series of Brightly Colored Alkali Metal 1,3‐Dimethylviolurates

Lorenz

Liebing

Hilfert

et al. 2020

Zeitschrift anorg allge chemie

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A complete series of alkali metal 1,3‐dimethylviolurates M(Me2Vio) was synthesized and fully characterized. The title compounds M(Me2Vio)(H2O) [M = Li (3), Na (4)], K(Me2Vio)(H2O)0.5 (5) and M(Me2Vio) [M = Rb (6), Cs (7)] were prepared by neutralizing 1,3‐dimethylvioluric acid (= HMe2Vio; 2) with 1 equiv. of the corresponding metal hydroxides MOH. The resulting salts exhibit striking colors ranging from orange‐red (3) through purple (4, 5) to bright blue (6, 7). In contrast to the monohydrate 4, the classical synthesis of sodium 1,3‐dimethylviolurate from 1,3‐dimethylbarbituric acid and NaNO2 afforded the purple trihydrate Na(Me2Vio)(H2O)3 (4a). All new compounds have been fully characterized by their IR and NMR (1H, 13C) spectra as well as elemental analyses. X‐ray crystal structure determination revealed that the title compounds exist as one‐ (Li, Na), two‐ (K, Cs), or three‐dimensional (Rb) coordination polymers in the solid state.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Structural Investigation of a Complete Series of Brightly Colored Alkali Metal 1,3‐Dimethylviolurates

Lorenz

Liebing

Hilfert

et al. 2020

Zeitschrift anorg allge chemie

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“…The more acidic nitroso-enol form of violuric acid is believed to be formed in solution prior to a reaction between violuric acid and a base (Dass & Dutt, 1939). The intense colours of the formed salts (Banik et al, 2016;Illá n-Cabeza et al, 2011, Kolev et al, 2009 have been experimentally ascribed to the n! * transition in the violurate ion (Awadallah et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Origin of chromic effects and crystal-to-crystal phase transition in the polymorphs of tyraminium violurate

Gryl

Rydz

Wojnarska

et al. 2019

Int Union Crystallogr J

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Chromic materials are nowadays widely used in various technological applications, however understanding the effect and the possibility of tuning the obtained colour of a material are still challenging. Here a combined experimental and theoretical study is presented on the solvatochromic and crystallochromic effects in the (pseudo)polymorphs of tyraminium violurate. This organic material exhibits a large solvatochromic shift (ca 192 nm) associated with broad colour change (from yellow to dark violet). Tyraminum violurate crystallizes as red crystals of form (I) from water as a solvate, and as an unsolvated form [violet crystals of (II)] from methanol solution. Form (I), when heated, undergoes two crystal-to-crystal phase transformations associated with colour change of the crystals. Crystals of (II) show extreme birefringence (ca 0.46) and high refractive index (n γ above 1.90), which can be correlated with preferential orientation of the resultant dipole moments of the ions. Examination of optical effects (UV–Vis spectra) along with theoretical calculations (QTAIM, atomic and bond polarizabilities) enabled the description of the origin of colour in the studied materials.

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“…Among these complexes, Re(I) carbonyl halide complexes fac-[Re(CO) 3 (N^N)(X)] (N^N = diimine and X = halides) have been intensely studied [17][18][19][20], as they may be used as electroluminescent materials in organic light-emitting diodes (OLEDs) [23], solar energy conversion [24], photocatalytic CO 2 reduction [25], and biological applications [26][27][28]. It has been well established that their luminescent properties are directly connected with the nature of the diimine ligands, and the variation of the diimine ligands readily tunes 3 their luminescent properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, structure and luminescent properties of rhenium(I) carbonyl complexes containing pyrimidine-functionalized N-heterocyclic carbenes

Wang

Liu

Chen

et al. 2013

Inorganica Chimica Acta

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Complexes with 6-amino-5-nitroso-2-thiouracil and violuric acid derivatives containing the fac-ReI(CO)3 core: Synthesis, XRD structural and photoluminescence characterization

Cited by 26 publications

References 30 publications

Synthesis and Structural Investigation of a Complete Series of Brightly Colored Alkali Metal 1,3‐Dimethylviolurates

Synthesis and Structural Investigation of a Complete Series of Brightly Colored Alkali Metal 1,3‐Dimethylviolurates

Origin of chromic effects and crystal-to-crystal phase transition in the polymorphs of tyraminium violurate

Synthesis, structure and luminescent properties of rhenium(I) carbonyl complexes containing pyrimidine-functionalized N-heterocyclic carbenes

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