@article{5cf75f1b6556444aa6472cfa1c169fb6,
title = "Synthesis, characterization and properties of the new ionic intercalation compound (NH+4)0.22TiS0.22-2",
abstract = "The new ionic intercalation compound (NH+4)0.22TiS0.22-2 has been synthesized by vacuum deintercalation of ammoniated TiS2, characterized by thermogravimetric analysis and powder X-ray diffraction, and examined by SQUID magnetometry (indirectly), differential scanning calorimetry, incoherent inelastic neutron scattering, and nuclear magnetic resonance. Although the diffraction pattern of this compound resembles a stage-II structure in which every other van der Waals gap is occupied by NH+4 it cannot be indexed completely on this basis. Magnetic and calorimetric measurements show that one electron is transferred to the host TiS2 conduction band per NH+4 cation and that the deintercalation enthalpy of NH+4 is 22 kcal/mol NH+4, respectively. Neutron scattering has provided evidence for an NH+4 torsional fundamental mode at 215 cm-1. The proton NMR linewidth and spin-lattice relaxation time are independent of temperature between 100 and 540 K, and the linewidth of 2.6 ± 0.3 G is in good agreement with that calculated for isotropic reorientation of the NH+4 cations.",
author = "McKelvy, {M. J.} and O'Bannon, {G. W.} and Larson, {E. M.} and {Von Dreele}, {R. B.} and Glaunsinger, {W. S.} and Marzke, {R. F.} and J. Eckert and Ross, {N. L.}",
note = "Funding Information: The new ionic intercalation compound (NH4)0.22TiS + 2{"} 0 22- has been synthesized by vacuum deintercalation of ammonlated TiS2, characterized by thermogravimetric analysis and powder X-ray diffraction, and examined by SQUID magnetometry (indirectly), differential scanning calorimetry, incoherent inelastic neutron scattering, and nuclear magnetic resonance. Although the diffraction pattern of this compound resembles a stage-II structure in which every other van der Waals gap is occupied by NH~ it cannot be indexed completely on this basis. Magnetic and calorimetric measurements show that one electron is transferred to the host TiS 2 conduction band per NH~ cation and that the deintercalation enthalpy of NH~ is 22 kcal/m~o l NH~, respectively. Neutron scattering has_~ ~rovided evidence f~ or an NH~ torsional fundamental mode at 215 cm J The proton NMR linewidth and spin-lattice relaxation time are independent of temperature between 100 and 540 K, and the linewidth of 2.6 ± 0.3 G is in good a~reement with that calculated for isotropic reorientation of the NH4cations. MATERIALS INDEX: sulfides, titanium, ammonium This research was supported by NSF Grant No. DMR To whom correspondance should 0e addressed. Funding Information: We wish to acknowledge the X-ray Diffraction Facility and Magnetism and Magnetic Resonance Facility at Arizona State University for use of the powder diffraction equipment and SQUID magnetometer, respectively. Work at Los Alamos was supported in part by the Division of Basic Energy Sciences, U.S. Department of Energy.",
year = "1986",
month = nov,
doi = "10.1016/0025-5408(86)90067-X",
language = "English (US)",
volume = "21",
pages = "1323--1333",
journal = "Materials Research Bulletin",
issn = "0025-5408",
publisher = "Elsevier Limited",
number = "11",
}