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[Yb 3 OBr 4 {N(SiMe 3 ) 2 } 3 (THF) 3 ], ein Amido‐Komplex des Ytterbiums mit clusterähnlichem Aufbau
Author(s) -
Karl Marc,
Neumüller Bernhard,
Seybert Gert,
Massa Werner,
Dehnicke Kurt
Publication year - 1997
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19976230803
Subject(s) - chemistry , crystallography , crystal structure , ytterbium , trigonal bipyramidal molecular geometry , molecule , oxygen atom , bromine , stereochemistry , atom (system on chip) , materials science , organic chemistry , optoelectronics , doping , computer science , embedded system
[Yb 3 OBr 4 {N(SiMe 3 ) 2 } 3 (THF) 3 ], an Amido Complex of Ytterbium with a Clusterlike Structure The title compound has been prepared from YbBr 3 and NaN(SiMe 3 ) 2 in THF suspension, forming yellow single crystals from hexane solutions which were characterized by a crystal structure determination. Space group P 1 , Z = 2, lattice dimensions at −100°C: a = 1085.4(1), b = 1410.2(1), c = 1912.0(1) pm; α = 78.62(1)°, β = 80.61(1)°, γ = 73.45(1)°, R = 0.025. In the molecular structure of [Yb 3 OBr 4 {N(SiMe 3 ) 2 } 3 (THF) 3 ] the three ytterbium atoms together with the μ 3 ‐oxygen atom and a μ 3 ‐bromine atom form a distorted trigonal bipyramid. In addition, three μ 2 ‐Br atoms coordinate the Yb atoms in the equatorial plane, whereas the THF molecules and the N(SiMe 3 ) 2 − ligands are terminally coordinated, thus forming a distorted octahedrally surrounding of the Yb atoms.