Kurt O. Klepp,
"Preparation and Crystal Structure of Na4TiSe4. A Selenotitanate with Discrete Anions"
, in Zeitschrift für Naturforschung B: A Journal of Chemical Sciences, 9-1999, ISSN: 0932-0776, K.O. Klepp: Preparation and Crystal Structure of Na4TiSe4. A Selenotitanate with Discrete Anions, Z. Naturforsch. 55b (2000) 39-44
Original Titel:
Preparation and Crystal Structure of Na4TiSe4. A Selenotitanate with Discrete Anions
Sprache des Titels:
Englisch
Original Kurzfassung:
Red crystals of Na4TiSe4 were obtained by reacting an intimate mixture of Na2Se, Ti and Se at 750?C. Na4TiSe4 is monoclinic, space group I2/a with a=24.027(6)Ä, b=7.346(4)Ä, c=21.572(6)Ä, beta=104.52(2)?, Z=16. Its crystal structure was determined from diffractometer data (AgKalpha-radiation) and refined to a conventional R of 0.036 for 2673 Fo's and 158 variables. The crystal structure is of a new type, characterized by the formation of discrete tetrahedral complex anions, [TiSe4]4-, which are arranged in slabs parallel to (100). The average Ti-Se bond length is 2.385(1)Ä. The Na(+) cations are in different chalcogen environments with distorted octahedral, square pyramidal and planer configurations, respectively.
Sprache der Kurzfassung:
Englisch
Journal:
Zeitschrift für Naturforschung B: A Journal of Chemical Sciences
Erscheinungsmonat:
9
Erscheinungsjahr:
1999
Notiz zum Zitat:
K.O. Klepp: Preparation and Crystal Structure of Na4TiSe4. A Selenotitanate with Discrete Anions, Z. Naturforsch. 55b (2000) 39-44