130581 20240126184245.0 doi 10.1021/acs.inorgchem.0c00124 sideral 117486 ART-2020-117486 eng Jiménez, Josefina Universidad de Zaragoza (orcid)0000-0002-3444-0851 Cyclotriphosphazenes as scaffolds for the synthesis of metallomesogens 2020 (Amino)cyclotriphosphazenes have been used as new scaffolds for the synthesis of silver(I) metallomesogens. Two cyclotriphosphazenes, [N3P3(NHCy)6] (phos-1) and nongem-trans-[N3P3(NHCy)3(NMe2)3] (phos-2), were reacted with the silver complex having a pro-mesogenic ligand, [Ag(OTf)L] (L = CNC6H4{OC(O)C6H2(3, 4, 5-(OC10H21)3)}-4; OTf = OSO2CF3), in different molar ratios, 1:1, 1:2, or 1:3, to give two series of cationic metallophosphazenes, [N3P3(NHCy)6{AgL}n](TfO)n (phos-1.n) and nongem-trans-[N3P3(NHCy)3(NMe2)3{AgL}n](TfO)n (phos-2.n) with n = 1, 2, or 3. The chemical structure of these compounds, deduced from spectroscopic techniques, was in accordance with coordination of the silver fragments "AgL" to nitrogen atoms of the phosphazene ring, whereby their number n depends on the molar ratio used. Despite the presence of the bulky substituents on the core N atoms, cyclotriphosphazenes coordinated to three "AgL" units exhibited mesomorphism at room temperature. The mesophase was characterized as columnar hexagonal according to the optical microscopy and X-ray diffraction studies. A model based on an intermolecular association in pairs of the metallocyclotriphosphazenes having three AgL units has been proposed in order to explain the mesomorphic columnar arrangement in these materials. Starting silver complex, [Ag(OTf)L], also exhibited a columnar hexagonal mesophase at room temperature. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA/E47-17R info:eu-repo/grantAgreement/ES/MINECO/MAT2017-84838-P info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 5.165 2020 CHEMISTRY, INORGANIC & NUCLEAR 5 / 45 = 0.111 2020 Q1 T1 1.348 2020 Chemistry (miscellaneous) 2020 Q1 Physical and Theoretical Chemistry 2020 Q1 Inorganic Chemistry 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Sanz, José Antonio Serrano, José Luis Universidad de Zaragoza (orcid)0000-0001-9866-6633 Barberá, Joaquín Universidad de Zaragoza (orcid)0000-0001-5816-7960 Oriol, Luis Universidad de Zaragoza (orcid)0000-0002-0922-5615 2010 760 Universidad de Zaragoza Dpto. Química Inorgánica Área Química Inorgánica 2013 765 Universidad de Zaragoza Dpto. Química Orgánica Área Química Orgánica 59, 7 (2020), 4842-4857 Inorg. chem. Inorganic Chemistry 0020-1669 3575364 http://zaguan.unizar.es/record/130581/files/texto_completo.pdf Postprint 1700038 http://zaguan.unizar.es/record/130581/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:130581 articulos driver 2024-01-26-18:11:32 ARTICLE