Фторид кюрия(III)

Фторид кюрия​(III)​
Изображение химической структуры
Общие
Систематическое
наименование
Фторид кюрия​(III)​
Традиционные названия Кюрий фтористый(III)
Хим. формула CmF3
Физические свойства
Состояние бесцветные кристаллы
Молярная масса 304,08 г/моль
Плотность 9,7 г/см³
Термические свойства
Температура
 • плавления 1410 °C
Химические свойства
Растворимость
 • в воде ~10 мг/л
Структура
Кристаллическая структура гексагональная
Классификация
Рег. номер CAS 13708-79-7
ChemSpider
Приведены данные для стандартных условий (25 °C, 100 кПа), если не указано иное.

Фторид кюрия(III) (трифторид кюрия, кюрий фтористый(III)) — бинарное неорганическое соединение кюрия и фтороводородной кислоты. Представляет собой бесцветные кристаллы, малорастворимые в воде.

Получение

Полученный таким способом фторид кюрия(III) быстро гидратируется. Для получения безводного соединения гидрат высушивают над пентаоксидом фосфора или обрабатывают горячим газообразным фтороводородом[1]:

Физические свойства

Фторид кюрия(III) образует бесцветные кристаллы гексагональной сингонии. Параметры ячейки a = 0,6999 (0,7019) нм, c = 0,7179 (0,7198) нм[2]. Пространственная группа [4]. Величина стандартной энтропии оценивается в 121 Дж/(К*моль) при 298 К[1]. Изоструктурен фториду лантана(III)[1].

Химические свойства

  • Восстанавливается барием до металлического кюрия при температуре 1300 °C[5]:

Примечания

Литература

  • Химическая энциклопедия / Редкол.: Кнунянц И.Л. и др.. — М.: Советская энциклопедия, 1990. — Т. 2. — 673 с. — ISBN 5-85270-035-5.
  • Вейгель Ф., Кац Д., Сиборг Г. и др. Химия актиноидов. — М.: Мир, 1997. — Т. 2. — 654 с. — ISBN 5-03-001885-9.
  • Химические свойства неорганических веществ / под ред. Р.А. Лидина. — 3-е изд., испр. — М.: Химия, 2000. — 480 с. — ISBN 5-7245-1163-0.
  • Рипан Р., Четяну И. Неорганическая химия. Химия металлов. — М.: Мир, 1971. — Т. 1. — 560 с.

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