RT Journal Article T1 Intermediate Rotator Phase in Lead(II) Alkanoates A1 Martínez Casado, Francisco J. A1 García Pérez, María Victoria A1 Redondo Yélamos, María Isabel A1 Rodríguez Cheda, José Antonio A1 Sánchez Arenas, Ángel Antonio A1 López De Andrés, María Sol A1 García Barriocanal, Javier A1 Rivera Calzada, Alberto Carlos A1 León Yebra, Carlos A1 Santamaría, Jesús AB Lead(II) alkanoates, from hexanoate to dodecanoate, have been analyzed by means of XRD, optical microscopy, DSC, FTIR, and electric spectroscopy. Four different phases have been identified, corresponding to the three thermal transitions measured by DSC: two of them solid (crystal and “intermediate” phases), and another two fluid (neat phase and isotropic liquid). Powder crystal XRD data indicate that the samples present a bilayered structure. The analysis of the (00l) spacing dependence with temperature in the three ordered phases strongly points to the intermediate phase to be a rotator phase. Optical microscopy and FTIR versus temperature also confirm a structural change from the crystal to the intermediate phase and its solid-state nature. Electrical conductivity maps the thermal transitions of the samples and shows a high ionic conductivity in the intermediate phase, which does not depend much on the carbon chain length. The high conductivity values (3 orders of magnitude higher in comparison with that of the ordered crystal at room temperature) obtained for the intermediate phase gave a further support to the existence of a rotator mesophase in the lead(II) alkanoate series. PB Amer. Chemical. Soc. SN 1932-7447 YR 2007 FD 2007 LK https://hdl.handle.net/20.500.14352/52749 UL https://hdl.handle.net/20.500.14352/52749 LA eng NO Ministerio de Educación y Ciencia de España DS Docta Complutense RD 12 abr 2025