{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:41:42Z","timestamp":1760244102143,"version":"build-2065373602"},"reference-count":21,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2004,8,31]],"date-time":"2004-08-31T00:00:00Z","timestamp":1093910400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Salts 1 and 2 that combine the [W6O19]2- Lindqvist anion with the cationicnitronyl nitroxide (NN) free radicals p-MepyNN+ and nBu3NCH2NN+ , respectively, havebeen synthesized and their structural and magnetic properties have been studied.<\/jats:p>","DOI":"10.3390\/90900782","type":"journal-article","created":{"date-parts":[[2008,10,25]],"date-time":"2008-10-25T13:32:11Z","timestamp":1224941531000},"page":"782-791","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Restricting Magnetic Interaction Pathways in Polyoxometalate Salts of Cationic Nitronyl Nitroxide Free Radicals"],"prefix":"10.3390","volume":"9","author":[{"given":"Ana","family":"Taraz\u00f3n","sequence":"first","affiliation":[{"name":"Institut de Ci\u00e8ncia Molecular, Universitat de Val\u00e8ncia, Dr. Moliner 50, 46100-Burjassot, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carlos","family":"Gim\u00e9nez-Saiz","sequence":"additional","affiliation":[{"name":"Institut de Ci\u00e8ncia Molecular, Universitat de Val\u00e8ncia, Dr. Moliner 50, 46100-Burjassot, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carlos J.","family":"G\u00f3mez-Garc\u00eda","sequence":"additional","affiliation":[{"name":"Institut de Ci\u00e8ncia Molecular, Universitat de Val\u00e8ncia, Dr. Moliner 50, 46100-Burjassot, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Francisco M.","family":"Romero","sequence":"additional","affiliation":[{"name":"Institut de Ci\u00e8ncia Molecular, Universitat de Val\u00e8ncia, Dr. Moliner 50, 46100-Burjassot, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2004,8,31]]},"reference":[{"unstructured":"For an overview of purely organic magnetism see the Proceedings of the 8th International Conference on Molecule-based Magnets: Polyhedron 2003, 14-17, 1725.","key":"ref_1"},{"doi-asserted-by":"crossref","unstructured":"Ullman, E. F., Osiecki, J. H., and Boocock, D. G. B. (1972). J. Am. Chem. Soc., 94, 7049.","key":"ref_2","DOI":"10.1021\/ja00775a031"},{"doi-asserted-by":"crossref","unstructured":"Desiraju, G. R. (1995). Angew. Chem., 107, 2541.","key":"ref_3","DOI":"10.1002\/ange.19951072105"},{"doi-asserted-by":"crossref","unstructured":"Cirujeda, J., Mas, M., Molins, E., Lanfranc de Panthou, F., Laugier, J., Park, J. G., Paulsen, C., Rey, P., Rovira, C., and Veciana, J. (1995). J. Chem. Soc., Chem. Commun., 709.","key":"ref_4","DOI":"10.1039\/C39950000709"},{"doi-asserted-by":"crossref","unstructured":"McConnell, H. M. (1963). J. Phys. Chem., 39, 1910.","key":"ref_5","DOI":"10.1063\/1.1734562"},{"doi-asserted-by":"crossref","unstructured":"Sporer, C., Heise, H., Wurst, K., Ruiz-Molina, D., Kopacka, H., Jaitner, P., K\u00f6hler, F., Novoa, J. J., and Veciana, J. (2004). Chem. Eur. J., 10, 1355\u20131365.","key":"ref_6","DOI":"10.1002\/chem.200305349"},{"doi-asserted-by":"crossref","unstructured":"Deumal, M., Cirujeda, J., Veciana, J., and Novoa, J. J. (1999). Chem. Eur. J., 5, 1631.","key":"ref_7","DOI":"10.1002\/(SICI)1521-3765(19990503)5:5<1631::AID-CHEM1631>3.3.CO;2-Y"},{"doi-asserted-by":"crossref","unstructured":"Deumal, M., Bearpark, M. J., Novoa, J. J., and Robb, M. A. (2002). J. Phys. Chem. A, 106, 1299.","key":"ref_8","DOI":"10.1021\/jp015512u"},{"doi-asserted-by":"crossref","unstructured":"Romero, F. M., Ziessel, R., Bonnet, M., Pontillon, Y., Ressouche, E., Schweizer, J., Delley, B., Grand, A., and Paulsen, C. (2000). J. Am. Chem. Soc., 122, 1298.","key":"ref_9","DOI":"10.1021\/ja992673r"},{"doi-asserted-by":"crossref","unstructured":"Awaga, K., Inabe, T., Nagashima, U., Nakamura, T., Matsumoto, M., Kawabata, Y., and Maruyama, Y. (1991). Chem. Lett., 1777.","key":"ref_10","DOI":"10.1246\/cl.1991.1777"},{"doi-asserted-by":"crossref","unstructured":"Stumpf, H. O., Ouahab, L., Pei, Y., Grandjean, D., and Kahn, O. (1993). Science, 261, 447.","key":"ref_11","DOI":"10.1126\/science.261.5120.447"},{"doi-asserted-by":"crossref","unstructured":"Ballester, G., Coronado, E., Gim\u00e9nez-Saiz, C., and Romero, F. M. (2001). Angew. Chem. Int. Ed. Engl., 40, 792.","key":"ref_12","DOI":"10.1002\/1521-3773(20010216)40:4<792::AID-ANIE7920>3.0.CO;2-L"},{"doi-asserted-by":"crossref","unstructured":"Similar alkylation reactions catalyzed by KI were previously reported. In our case, the reaction proceeds with good yields in the absence of catalyst:    (a)      Ulrich  G.      Turek  P.      Ziessel  R.      Tetrahedron Lett.  1996  37  8755","key":"#cr-split#-ref_13.1","DOI":"10.1016\/S0040-4039(96)02042-4"},{"doi-asserted-by":"crossref","unstructured":"(b)      Ziessel  R.      Stroh  C.      Org. Lett.  2003  5  2397","key":"#cr-split#-ref_13.2","DOI":"10.1021\/ol034474p"},{"doi-asserted-by":"crossref","unstructured":"Rimbaud, C., Ouahab, L., Sutter, J. P., and Kahn, O. (1997). Mol. Cryst. Liq. Cryst. A, 306, 67.","key":"ref_14","DOI":"10.1080\/10587259708044550"},{"unstructured":"Crystal data for 1: C26H38N6O23W6, M = 1905.72, crystal dimensions: 0.40\u00d70.15\u00d70.15 mm3, triclinic, P-1, a = 8.263(5) \u00c5, b = 11.427(5) \u00c5, c = 12.065(16) \u00c5, \u03b1 = 65.78(4)\u00b0, \u03b2 = 79.40(7)\u00b0, \u03b3 = 84.18(4)\u00b0, V = 1020.8(16) \u00c53, Z = 1, \u03c1calc = 3.100 Mg m-3, \u03bc(MoK\u03b1) = 16.927 mm-1. A green-yellow dichroic prism-like single crystal of 1 was used for data collection on a Nonius Kappa CCD diffractometer (3.74\u00ba < 2\u03b8 < 59.96\u00b0) equipped with a graphite monochromated MoK\u03b1 radiation source (\u03bb = 0.71073 \u00c5). Data collection was performed at 293(2) K. Of 6311 measured reflections, 5930 were independent (Rint = 0.0206) and used to refine 285 parameters. Final R (I > 2\u03c3(I)), R1 = 0.0371, wR2 = 0.1006; final R (all data), R1 = 0.0624, wR2 = 0.1085. Max.\/min. residual peaks in the final difference map 3.440 and -2.133 e\u00b7\u00c5-3.","key":"ref_15"},{"doi-asserted-by":"crossref","unstructured":"Bowers, G. A., Rushbrooke, G. S., and Gilbert, H. E. (1964). Phys. Rev., 135, A1272.","key":"ref_16","DOI":"10.1103\/PhysRev.135.A1272"},{"doi-asserted-by":"crossref","unstructured":"Bleaney, B., and Bowers, K. D. (1952). Proc. Roy. Soc. (London) Ser. A, 214, 451.","key":"ref_17","DOI":"10.1098\/rspa.1952.0181"},{"unstructured":"Crystal data for 2: C40H82N6O23W6, M = 2118.22, crystal dimensions: 0.15\u00d70.05\u00d70.05 mm3, monoclinic, P21\/c, a = 12.4870(4) \u00c5, b = 18.1526(11) \u00c5, c = 17.0350(9) \u00c5, \u03b2 = 131.587(5)\u00b0, V = 2888.1(3) \u00c53, Z = 2, \u03c1calc = 2.436 Mg m-3, \u03bc(MoK\u03b1) = 11.979 mm-1. A purple prism-like single crystal of 2 was used for data collection on a Nonius Kappa CCD diffractometer (4.48\u00ba < 2\u03b8 < 54.98\u00b0) equipped with a graphite monochromated MoK\u03b1 radiation source (\u03bb = 0.71073 \u00c5). Data collection was performed at 150(2) K. Of 54266 measured reflections, 6622 were independent (Rint = 0.1249) and used to refine 348 parameters. Final R (I > 2\u03c3(I)), R1 = 0.0502, wR2 = 0.1195; final R (all data), R1 = 0.0673, wR2 = 0.1298. Max.\/min. residual peaks in the final difference map 3.837 and -6.215 e\u00b7\u00c5-3.","key":"ref_18"},{"doi-asserted-by":"crossref","unstructured":"Yamaguchi, A., Awaga, K., Inabe, T., Nakamura, T., Matsumoto, M., and Maruyama, Y. (1993). Chem. Lett., 1443.","key":"ref_19","DOI":"10.1246\/cl.1993.1443"},{"doi-asserted-by":"crossref","unstructured":"Fournier, M. (1990). Inorg. 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