SYNTHESIS AND STRUCTURE OF DROTRIS(3,5-DIMETHYLPYRAZOLYL)BORATO]SAMARIUM(II), SM[HB(3,5-ME2PZ)3]2, AND THE PRODUCT OF ITS REACTION WITH AZOBENZENE

Authors
TAKATS J ZHANG XW DAY VW EBERSPACHER TA
Citation
J. Takats et al., SYNTHESIS AND STRUCTURE OF DROTRIS(3,5-DIMETHYLPYRAZOLYL)BORATO]SAMARIUM(II), SM[HB(3,5-ME2PZ)3]2, AND THE PRODUCT OF ITS REACTION WITH AZOBENZENE, Organometallics, 12(11), 1993, pp. 4286-4288
Citations number
24
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Organometallics → ACNP
ISSN journal
02767333
Volume
12
Issue
11
Year of publication
1993
Pages
4286 - 4288
Database
ISI
SICI code
0276-7333(1993)12:11<4286:SASOD>2.0.ZU;2-9
Abstract
Treatment of SmI2.2THF with 2 equiv of NaHB(3,5-Me2pz)3 in THF affords purple Sm[HB(3,5-Me2pz)3]2, 1, in high yield. Despite its insoluble n ature, 1 readily reacts with azobenzene to give soluble, green Sm[HB(3 ,5-Me2PZ)3]2(N2Ph2), 2. The structures of 1 and 2 have been determined by X-ray crystallography. Complex 1 has the symmetrical metallocene s tructure. The eta3-bonding mode of both pyrazolylborate ligands is ret ained in 2, and in addition the cis-azobenzene moiety is symmetrically bonded to the samarium center via both nitrogen atoms.