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From a documentary historical perspective, the commercial expansion of telecommunications systems from first-world countries that have maintained a dominant presence in Mexico for 100 years is analyzed. The activated FM receiver in cell phones, which Apple has decided not to activate, serves as an example of the need to regulate the power of multinational corporations, which diminishes visibility in public communication and social media. Neither the public pressure from authorities, industry, and civil society in Mexico, Canada, nor the United States has succeeded in dissuading the iPhone from allowing such signals on its devices, thereby favoring the sales of headphones, music services, and mobile broadband data payments. Contributions from direct contact with media representatives and regulatory bodies are included. [ABSTRACT FROM AUTHOR]

C19H18O8, monoclinic, P21/c (no. 14), a = 12.689(2) Å, b = 20.321(4) Å, c = 7.0820(13) Å, β = 105.368(13)°, V = 1760.8(6) Å3, Z = 4, Rgt = 0.0662, wRref(F2) = 0.1788, T = 295 K.

C17H16O6, orthorhombic, P212121 (no. 19), a = 5.2601(3) Å, b = 12.7161(6) Å, c = 22.0116(11) Å, V = 1472.31(13) Å3, Z = 4, Rgt(F) = 0.0430, wRref(F2) = 0.1089, T = 296(2) K.

C18H15N3O6 ⋅ C2H6OS, P21/c (no. 14), a = 15.762(9) Å, v = 6.013(4) Å, c = 22.264(11) Å, β = 103.522(19)°, V = 2052(2) Å3, Z = 4, Rgt(F) = 0.0484, wRref(F2) = 0.1348, T = 296(2) K.

Individual tree species might affect underground soil properties to favor the decomposition of their own litter. However, in some studies, monospecific litter decomposed faster underneath multispecific canopies than under canopies of the same species as the litter, suggesting that plant diversity in the overstorey creates a more favorable decomposition microenvironment. We compared the decomposition rate of monospecific litter from eight temperate tree species under the crown of the same species as the litter (conspecific canopy), and a multispecific canopy formed by eight species. Using model selection, we determined the influence of the microenvironments, species, and litter chemistry on decomposition rates. The most robust model included the species and canopy type, but it differed only slightly from the model including only the species. Decomposition rates were significantly different among species and higher in conspecific canopy than multispecific canopy in all species. Models including specific leaf area and different combinations of chemical traits of the litter were less robust than the null model. These results show that the species origin of the litter was significantly more important than the microenvironment to explain litter decomposition rates. [ABSTRACT FROM AUTHOR]

C14H16N6O3, triclinic, space group P1̅ (no. 2), a = 7.7890(5) Å, b = 8.6069(6) Å, c = 12.4753(8) Å, α = 77.064(4)°, β = 72.754(3)°, γ = 67.148(3)°, V = 730.40(9) Å3, Z = 2, Rgt(F) = 0.0594, wRref(F2) = 0.1542, T = 297(2) K.

C21H34O3, orthorhombic, P212121 (no. 19), a = 7.5420(7) Å, b = 11.6929(11) Å, c = 22.657(2) Å, V = 1998.1(3) Å3, Z = 4, Rgt(F) = 0.0383, wRref(F2) = 0.113, T = 293(2) K.

C15H24O3, orthorhombic, P212121 (no. 19), a = 7.5352(2) Å, b = 10.6639(3) Å, c = 17.5406(5) Å, V = 1409.47(7) Å3, Z = 4, Rgt(F) = 0.0315, wRref(F2) = 0.0838, T = 293 K.

C18H16O8, monoclinic, P21/n, (no. 14), a = 7.9253(3) Å, b = 16.8928(6) Å, c = 11.8439(5) Å, β = 92.387(2)°, V = 1584.29(11) Å3, Z = 4, Rgt(F) = 0.043, wRref(F2) = 0.102, T = 295(2) K.

C24H24N4O6, monoclinic, P21/n (no. 14), a = 18.9759(19) Å, b = 14.0764(13) Å, c = 19.2072(19) Å, β = 116.836(7)°, V = 4577.9(8) Å3, Z = 8, Rgt(F) = 0.077, wRref(F2) = 0.206, T = 173(2) K.

C16H11NO3·H2O, triclinic, P-1 (no. 2), a = 7.4445(3) Å, b = 13.7846(7) Å, c = 14.0875(9) Å, α = 109.945(5)°, β = 101.686(4)°, γ = 101.735(4)°, V = 1271.15(13) Å3, Z = 2, Rgt(F) = 0.034, wRref(F2) = 0.093, T = 293(2) K.

C16H14O5, Aba2 (no. 41), a = 7.4156(5) Å, b = 31.415(2) Å, c = 5.9451(4) Å, V = 1384.98(16) Å3, Z = 4, Rgt(F) = 0.0316, wRref(F2) = 0.0924, T = 297(2) K.

C14H17N3O2, monoclinic, P21/c (no. 14), a = 14.9289(7) Å, b = 7.8070(4) Å, c = 12.4664(7) Å, β = 106.821(4)°, V = 1390.79(13) Å3, Z = 4, Rgt(F) = 0.0646, wRref(F2) = 0.1682, T = 293(2) K.

C11H12N4O2, monoclinic, P21/c (no. 14), a = 12.0258(15) Å, b = 8.0563(10) Å, c = 12.4478(13) Å, β = 104.157(4)°, V = 1169.4(2) Å3, Z = 4, Rgt(F) = 0.0619, wRref(F2) = 0.1616, T = 293(2) K.

C4H12CoN4O10, monoclinic, P21/n (no. 14), a = 7.9379(7) Å, b = 6.0324(6) Å, c = 13.6542(13) Å, β = 104.184(4)°, V = 633.89(10) Å3, Z = 2, Rgt = 0.033, wRref(F2) = 0.090, T = 296(2) K.

C12H12ClN3O2, monoclinic, P21/c (no. 14), a = 13.5673(5) Å, b = 7.7549(3) Å, c = 12.4911(5) Å, β = 102.468(2)°, V = 1283.23(9) Å3, Z = 4, Rgt(F) = 0.047, wRref(F2) = 0.123, T = 293(2) K.

C16H16AgN2O4BF4, monoclinic, C2/c (no. 15), a = 17.416(2) Å, b = 13.1378(14) Å, c = 7.8246(10) Å, β = 96.566(10)°, V = 1778.6(4) Å3, Z = 4, Rgt(F) = 0.025, wRref(F2) = 0.065, T = 173(2) K.

C28H28CuN6O16, triclinic, P1̅, (no. 2), a = 7.3118(7) Å, b = 10.0597(8) Å, c = 11.2579(10) Å, α = 92.109(7)°, β = 105.804(7)°, γ = 98.416(7)°, V = 785.63(12)Å3, Z = 1, Rgt(F) = 0.042, wRref(F2) = 0.095, T = 173(2) K.

C22H20O5, orthorhombic, P212121 (no. 19), a = 6.2039(3) Å, b = 13.1634(8) Å, c = 22.8258(12) Å, V = 1864.06(17) Å3, Z = 4, Rgt(F) = 0.053, wRref(F2) = 0.117, T = 297(2) K.

Two Zn(II) coordination polymers (CPs) based on n-methylpyridyltriazole carboxylate semi-rigid organic ligands (n-MPTC), with n = 3 (L1) and 4 (L2), have been prepared at the water n-butanol interphase by reacting Zn(NO3)2·4H2O with NaL1 and NaL2. This allows us to systematically investigate the influence of the isomeric positional effect on their structures. The organic ligands were obtained by saponification from their respective ester precursors ethyl-5-methyl-1-(pyridin-3-ylmethyl)-1H-1,2,3-triazole-4-carboxylate (P1) and ethyl-5-methyl-1-(pyridin-4-ylmethyl)-1H-1,2,3-triazole-4-carboxylate (P2), resulting in their corresponding sodium salt forms, 3-MPTC, and 4-MPTC. The structure of the Zn(II) CPs determined by single-crystal X-ray diffraction reveals that both CPs have 2D supramolecular hydrogen bond networks. The 2D supramolecular network of [Zn(L1)]n (1) is built up by hydrogen bond interactions between oxygen and hydrogen atoms between neighboring n-methylpyridyltriazole molecules, whereas in [Zn(L2)·4H2O]n (2) the water molecules link 1D polymeric chains forming a 2D supramolecular aggregate. The structures of 1 and 2 clearly show that the isomeric effect in the semi-rigid ligands plays a vital role in constructing the Zn(II) coordination polymers, helped by the presence of the methylene spacer group, in the final structural conformation. The structures of 1 and 2 significantly affect their luminescent properties. Thus, while 2 shows strong emission at room temperature centered at 367 nm, the emission of 1 is quenched substantially. [ABSTRACT FROM AUTHOR]

C14H12O4, orthorhombic, Pca21 (no. 29), a = 22.6015(12) Å, b = 7.1344(4) Å, c = 7.3789(4) Å, V = 1189.83(11) Å3, Z = 4, Rgt(F) = 0.065, wRref(F2) = 0.186, T = 298 K.

C15H14O6, triclinic, P1̅ (no. 2), a = 8.2996(5) Å, b = 8.3739(4) Å, c = 10.7565(5) Å, α = 94.942(3)°, β = 112.199(4)°, γ = 102.752(4)°, V = 663.09(6) Å3, Z = 2, Rgt(F) = 0.044, wRref(F2) = 0.1134, T = 299 K.

C26H20N2O2, monoclinic, C2/c (no. 15), a = 36.237(2) Å, b = 6.6915(3) Å, c = 16.3951(8) Å, β = 107.453(4)°, V = 3792.5 Å3, Z = 8, Rgt(F) = 0.0686, wRref(F2) = 0.1991, T = 173 K.

C14H11N3O, triclinic, P1̅ (no. 2), a = 9.0506(8) Å, b = 11.362(1) Å, c = 11.486(1) Å, α = 88.137(7)°, β = 87.526(7)°, γ = 89.659(7)°, V = 1179.4 Å3, Z = 4, Rgt(F) = 0.0581, wRref(F2) = 0.1489, T = 173 K.

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