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Molecular and Crystal Structures of Cp 2 YbX(THF) (X = Cl, Br)
Author(s) -
Stellfeldt Dirk,
Meyer Gerd,
Deacon Glen B.
Publication year - 2001
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 - 10.1002/1521-3749(200107)627:7<1659::aid-zaac1659>3.0.co;2-2
Subject(s) - monoclinic crystal system , orthorhombic crystal system , chemistry , crystallography , crystal structure , stereochemistry
Cp 2 YbCl(THF) crystallizes in the orthorhombic space group Pnma (Z = 4, a = 13.109(5), b = 11.851(4), c = 9.377(3) Å, R1 = 0.0412, wR2 = 0.0482), while Cp 2 YbBr(THF) is monoclinic (P2 1 /n, Z = 4, a = 8.149(2), b = 12.997(2), c = 14.388(3) Å, β = 105.73(2)°, R1 = 0.0425, wR2 = 0.0436). The ligand arrangements around the formally eight coordinate Yb atoms are pseudo tetrahedral. These two determinations complete the first series of [Cp 2 LnX(L)] (X = F, Cl, Br, I) structures covering all halogens for one lanthanoid and cyclopentadienyl group.