100 research outputs found

    People from Brač, emigrant press in Chile and newspaper Domovina - from the late 19th century to the beginning of World War I

    Get PDF
    Cilj je rada postaviti ishodišta za proučavanje povijesti hrvatskog iseljeničkog novinstva u Čileu od najranijeg razdoblja doseljenja Hrvata do kraja 1914. godine, među kojima je brojčano dominantnu grupaciju činilo stanovništvo s Brača. Radilo se prvenstveno o ekonomskoj migraciji uzrokovanoj ekonomskim promjenama u društvu općenito, ali i ekonomskim promjenama kao posljedicama političkih kretanja. U novu domovinu donose tradicionalnu potrebu organiziranja u razna društva, ali i svijest o vlastitoj nacionalnoj pripadnosti s vlastitim jezikom. Neobično brza asimilacija (već u prvoj generaciji) dovodi u pitanje opstojnost te potrebu očuvanja baštine. Iseljeničke novine u kojima surađuju, uređuju ih i pokreću Bračani – novinari, među kojima se ističu Ivan Krstulović i Luka Bonačić s novinama „Domovina“ iz Punta Arenasa, u dosadašnjoj literaturi sagledavane su gotovo isključivo s aspekta političke orijentacije i borbe. Cilj je rada kroz primjer rubrike „Iz mjesta i okolice“, koja je održala kontinuitet tijekom cijelog razdoblja izlaženja lista „Domovina“ i čijim je sastavnim dijelom bila, prikazati, s aspekta socijalne povijesti, da su lokalne novine odražavale i bilježile pojave i događanja značajna za svakodnevni život zajednice sa svrhom očuvanja njezina identiteta.The topic of this paper is to set the starting point for studying the history of Croatian emigrant journalism in Chile from the earliest period of the settlement of Croats until the end of 1914, including the dominant population group from Brač. It was primarily the economic migration, which was caused by economic changes in the society in general, and economic changes as a consequence of political movements. The immigrants had the need for organizing themselves in various societies in the new country, and they also had the awareness of their own nationality and language. The unusually rapid assimilation (already in the first generation) calls into question the viability and the need to preserve heritage. Immigrant newspapers edited and run by Brač emigrant journalists, most notably Ivan Krstulović and Luka Bonačić, with the newspaper Domovina from Punta Arenas, were in the current literature perceived almost exclusively in terms of political orientation and struggle. The aim of this paper is to show that the local newspaper Domovina reflected and recorded phenomena and events significant for the daily life of the community with the intention of preservation its identity from the perspective of social history, especially in the section From the town and surrounding areas

    Magnetic Blocking at 10 K and a Dipolar-Mediated Avalanche in Salts of the Bis(η<sup>8</sup>‑cyclooctatetraenide) Complex [Er(COT)<sub>2</sub>]<sup>−</sup>

    No full text
    The structures and magnetic properties of [K­(18-crown-6)]<sup>+</sup> (<b>1</b>) and [K­(18-crown-6)­(THF)<sub>2</sub>]<sup>+</sup> (<b>2</b>) salts of the η<sup>8</sup>-cyclooctatetraenide sandwich complex [Er­(COT)<sub>2</sub>]<sup>−</sup> (COT<sup>2–</sup> = cyclooctatetraene dianion) are reported. Despite slight differences in symmetry, both compounds exhibit slow magnetic relaxation under zero applied dc field with relaxation barriers of ∼150 cm<sup>–1</sup> and waist-restricted magnetic hysteresis. Dc relaxation and dilution studies suggest that the drop in the magnetic hysteresis near zero field is influenced by a bulk magnetic avalanche effect coupled with tunneling of the magnetization. Through dilution with [K­(18-crown-6)­(THF)<sub>2</sub>]­[Y­(COT)<sub>2</sub>] (<b>3</b>), these phenomena are substantially quenched, resulting in an open hysteresis loop to 10 K. Importantly, this represents the highest blocking temperature yet observed for a mononuclear complex and the second highest for any single-molecule magnet. A comprehensive comparative analysis of the magnetism of [K­(18-crown-6)]­[Ln­(COT)<sub>2</sub>] (Ln = Sm, Tb, Dy, Ho, Yb) reveals slow relaxation only for [K­(18-crown-6)]­[Dy­(COT)<sub>2</sub>] (<b>4</b>) with weak temperature dependence. Collectively, these results highlight the utility of an equatorial ligand field for facilitating slow magnetic relaxation in the prolate Er<sup>III</sup> ion

    Magnetic Blocking at 10 K and a Dipolar-Mediated Avalanche in Salts of the Bis(η<sup>8</sup>‑cyclooctatetraenide) Complex [Er(COT)<sub>2</sub>]<sup>−</sup>

    No full text
    The structures and magnetic properties of [K­(18-crown-6)]<sup>+</sup> (<b>1</b>) and [K­(18-crown-6)­(THF)<sub>2</sub>]<sup>+</sup> (<b>2</b>) salts of the η<sup>8</sup>-cyclooctatetraenide sandwich complex [Er­(COT)<sub>2</sub>]<sup>−</sup> (COT<sup>2–</sup> = cyclooctatetraene dianion) are reported. Despite slight differences in symmetry, both compounds exhibit slow magnetic relaxation under zero applied dc field with relaxation barriers of ∼150 cm<sup>–1</sup> and waist-restricted magnetic hysteresis. Dc relaxation and dilution studies suggest that the drop in the magnetic hysteresis near zero field is influenced by a bulk magnetic avalanche effect coupled with tunneling of the magnetization. Through dilution with [K­(18-crown-6)­(THF)<sub>2</sub>]­[Y­(COT)<sub>2</sub>] (<b>3</b>), these phenomena are substantially quenched, resulting in an open hysteresis loop to 10 K. Importantly, this represents the highest blocking temperature yet observed for a mononuclear complex and the second highest for any single-molecule magnet. A comprehensive comparative analysis of the magnetism of [K­(18-crown-6)]­[Ln­(COT)<sub>2</sub>] (Ln = Sm, Tb, Dy, Ho, Yb) reveals slow relaxation only for [K­(18-crown-6)]­[Dy­(COT)<sub>2</sub>] (<b>4</b>) with weak temperature dependence. Collectively, these results highlight the utility of an equatorial ligand field for facilitating slow magnetic relaxation in the prolate Er<sup>III</sup> ion

    Magnetic Blocking at 10 K and a Dipolar-Mediated Avalanche in Salts of the Bis(η<sup>8</sup>‑cyclooctatetraenide) Complex [Er(COT)<sub>2</sub>]<sup>−</sup>

    No full text
    The structures and magnetic properties of [K­(18-crown-6)]<sup>+</sup> (<b>1</b>) and [K­(18-crown-6)­(THF)<sub>2</sub>]<sup>+</sup> (<b>2</b>) salts of the η<sup>8</sup>-cyclooctatetraenide sandwich complex [Er­(COT)<sub>2</sub>]<sup>−</sup> (COT<sup>2–</sup> = cyclooctatetraene dianion) are reported. Despite slight differences in symmetry, both compounds exhibit slow magnetic relaxation under zero applied dc field with relaxation barriers of ∼150 cm<sup>–1</sup> and waist-restricted magnetic hysteresis. Dc relaxation and dilution studies suggest that the drop in the magnetic hysteresis near zero field is influenced by a bulk magnetic avalanche effect coupled with tunneling of the magnetization. Through dilution with [K­(18-crown-6)­(THF)<sub>2</sub>]­[Y­(COT)<sub>2</sub>] (<b>3</b>), these phenomena are substantially quenched, resulting in an open hysteresis loop to 10 K. Importantly, this represents the highest blocking temperature yet observed for a mononuclear complex and the second highest for any single-molecule magnet. A comprehensive comparative analysis of the magnetism of [K­(18-crown-6)]­[Ln­(COT)<sub>2</sub>] (Ln = Sm, Tb, Dy, Ho, Yb) reveals slow relaxation only for [K­(18-crown-6)]­[Dy­(COT)<sub>2</sub>] (<b>4</b>) with weak temperature dependence. Collectively, these results highlight the utility of an equatorial ligand field for facilitating slow magnetic relaxation in the prolate Er<sup>III</sup> ion

    Magnetic Blocking at 10 K and a Dipolar-Mediated Avalanche in Salts of the Bis(η<sup>8</sup>‑cyclooctatetraenide) Complex [Er(COT)<sub>2</sub>]<sup>−</sup>

    No full text
    The structures and magnetic properties of [K­(18-crown-6)]<sup>+</sup> (<b>1</b>) and [K­(18-crown-6)­(THF)<sub>2</sub>]<sup>+</sup> (<b>2</b>) salts of the η<sup>8</sup>-cyclooctatetraenide sandwich complex [Er­(COT)<sub>2</sub>]<sup>−</sup> (COT<sup>2–</sup> = cyclooctatetraene dianion) are reported. Despite slight differences in symmetry, both compounds exhibit slow magnetic relaxation under zero applied dc field with relaxation barriers of ∼150 cm<sup>–1</sup> and waist-restricted magnetic hysteresis. Dc relaxation and dilution studies suggest that the drop in the magnetic hysteresis near zero field is influenced by a bulk magnetic avalanche effect coupled with tunneling of the magnetization. Through dilution with [K­(18-crown-6)­(THF)<sub>2</sub>]­[Y­(COT)<sub>2</sub>] (<b>3</b>), these phenomena are substantially quenched, resulting in an open hysteresis loop to 10 K. Importantly, this represents the highest blocking temperature yet observed for a mononuclear complex and the second highest for any single-molecule magnet. A comprehensive comparative analysis of the magnetism of [K­(18-crown-6)]­[Ln­(COT)<sub>2</sub>] (Ln = Sm, Tb, Dy, Ho, Yb) reveals slow relaxation only for [K­(18-crown-6)]­[Dy­(COT)<sub>2</sub>] (<b>4</b>) with weak temperature dependence. Collectively, these results highlight the utility of an equatorial ligand field for facilitating slow magnetic relaxation in the prolate Er<sup>III</sup> ion

    Magnetic Blocking at 10 K and a Dipolar-Mediated Avalanche in Salts of the Bis(η<sup>8</sup>‑cyclooctatetraenide) Complex [Er(COT)<sub>2</sub>]<sup>−</sup>

    No full text
    The structures and magnetic properties of [K­(18-crown-6)]<sup>+</sup> (<b>1</b>) and [K­(18-crown-6)­(THF)<sub>2</sub>]<sup>+</sup> (<b>2</b>) salts of the η<sup>8</sup>-cyclooctatetraenide sandwich complex [Er­(COT)<sub>2</sub>]<sup>−</sup> (COT<sup>2–</sup> = cyclooctatetraene dianion) are reported. Despite slight differences in symmetry, both compounds exhibit slow magnetic relaxation under zero applied dc field with relaxation barriers of ∼150 cm<sup>–1</sup> and waist-restricted magnetic hysteresis. Dc relaxation and dilution studies suggest that the drop in the magnetic hysteresis near zero field is influenced by a bulk magnetic avalanche effect coupled with tunneling of the magnetization. Through dilution with [K­(18-crown-6)­(THF)<sub>2</sub>]­[Y­(COT)<sub>2</sub>] (<b>3</b>), these phenomena are substantially quenched, resulting in an open hysteresis loop to 10 K. Importantly, this represents the highest blocking temperature yet observed for a mononuclear complex and the second highest for any single-molecule magnet. A comprehensive comparative analysis of the magnetism of [K­(18-crown-6)]­[Ln­(COT)<sub>2</sub>] (Ln = Sm, Tb, Dy, Ho, Yb) reveals slow relaxation only for [K­(18-crown-6)]­[Dy­(COT)<sub>2</sub>] (<b>4</b>) with weak temperature dependence. Collectively, these results highlight the utility of an equatorial ligand field for facilitating slow magnetic relaxation in the prolate Er<sup>III</sup> ion

    Slow Magnetic Relaxation at Zero Field in the Tetrahedral Complex [Co(SPh)<sub>4</sub>]<sup>2–</sup>

    No full text
    The Ph<sub>4</sub>P<sup>+</sup> salt of the tetrahedral complex [Co­(SPh)<sub>4</sub>]<sup>2–</sup>, possessing an <i>S</i> = <sup>3</sup>/<sub>2</sub> ground state with an axial zero-field splitting of <i>D</i> = −70 cm<sup>–1</sup>, displays single-molecule magnet behavior in the absence of an applied magnetic field. At very low temperatures, ac magnetic susceptibility data show the magnetic relaxation time, τ, to be temperature-independent, while above 2.5 K thermally activated Arrhenius behavior is apparent with <i>U</i><sub>eff</sub> = 21(1) cm<sup>–1</sup> and τ<sub>0</sub> = 1.0(3) × 10<sup>–7</sup> s. Under an applied field of 1 kOe, τ more closely approximates Arrhenius behavior over the entire temperature range. Upon dilution of the complex within a matrix of the isomorphous compound (Ph<sub>4</sub>P)<sub>2</sub>[Zn­(SPh)<sub>4</sub>], ac susceptibility data reveal the molecular nature of the slow magnetic relaxation and indicate that the quantum tunneling pathway observed at low temperatures is likely mediated by intermolecular dipolar interactions

    Magnetic Blocking at 10 K and a Dipolar-Mediated Avalanche in Salts of the Bis(η<sup>8</sup>‑cyclooctatetraenide) Complex [Er(COT)<sub>2</sub>]<sup>−</sup>

    No full text
    The structures and magnetic properties of [K­(18-crown-6)]<sup>+</sup> (<b>1</b>) and [K­(18-crown-6)­(THF)<sub>2</sub>]<sup>+</sup> (<b>2</b>) salts of the η<sup>8</sup>-cyclooctatetraenide sandwich complex [Er­(COT)<sub>2</sub>]<sup>−</sup> (COT<sup>2–</sup> = cyclooctatetraene dianion) are reported. Despite slight differences in symmetry, both compounds exhibit slow magnetic relaxation under zero applied dc field with relaxation barriers of ∼150 cm<sup>–1</sup> and waist-restricted magnetic hysteresis. Dc relaxation and dilution studies suggest that the drop in the magnetic hysteresis near zero field is influenced by a bulk magnetic avalanche effect coupled with tunneling of the magnetization. Through dilution with [K­(18-crown-6)­(THF)<sub>2</sub>]­[Y­(COT)<sub>2</sub>] (<b>3</b>), these phenomena are substantially quenched, resulting in an open hysteresis loop to 10 K. Importantly, this represents the highest blocking temperature yet observed for a mononuclear complex and the second highest for any single-molecule magnet. A comprehensive comparative analysis of the magnetism of [K­(18-crown-6)]­[Ln­(COT)<sub>2</sub>] (Ln = Sm, Tb, Dy, Ho, Yb) reveals slow relaxation only for [K­(18-crown-6)]­[Dy­(COT)<sub>2</sub>] (<b>4</b>) with weak temperature dependence. Collectively, these results highlight the utility of an equatorial ligand field for facilitating slow magnetic relaxation in the prolate Er<sup>III</sup> ion

    A Dual−Ion Battery Cathode via Oxidative Insertion of Anions in a Metal–Organic Framework

    No full text
    A redox−active metal–organic framework, Fe<sub>2</sub>(dobpdc) (dobpdc<sup>4–</sup> = 4,4′-dioxidobiphenyl-3,3′-dicarboxylate), is shown to undergo a topotactic oxidative insertion reaction with a variety of weakly coordinating anions, including BF<sub>4</sub><sup>–</sup> and PF<sub>6</sub><sup>–</sup>. The reaction results in just a minor lattice contraction, and a broad intervalence charge-transfer band emerges, indicative of charge mobility. Although both metal- and ligand-based oxidations can be accessed, only the former were found to be fully reversible and, importantly, proceed stoichiometrically under both chemical and electrochemical conditions. Electrochemical measurements probing the effects of nanoconfinement on the insertion reaction revealed strong anion size and solvent dependences. Significantly, the anion insertion behavior of Fe<sub>2</sub>(dobpdc) enabled its use in the construction of a dual-ion battery prototype incorporating a sodium anode. As a cathode, the material displays a particularly high initial reduction potential and is further stable for at least 50 charge/discharge cycles, exhibiting a maximum specific energy of 316 Wh/kg

    Correction to “A Dual-Ion Battery Cathode via Oxidative Insertion of Anions in a Metal–Organic Framework”

    No full text
    Correction to “A Dual-Ion Battery Cathode via Oxidative Insertion of Anions in a Metal–Organic Framework
    corecore