Organometallic Compounds of the Lanthanides. 127 [1] Synthesis of Monomeric Bis(cyclopentadienyl)lanthanide Tetrahydroborates with Bulky Cyclopentadienyl Ligands. Single Crystal X-ray Structures of [(η5-C5Me5)2SmBH4(THF)] and [(η5-C5Me4Et)2Y(μ-H)2BH2(THF)]

✍ Scribed by Herbert Schumann; Markus R. Keitsch; Jörg Demtschuk; Stefan Mühle

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: German
• Weight: 171 KB
• Volume: 624
• Category: Article
• ISSN: 0372-7874
• DOI: 10.1002/(sici)1521-3749(1998110)624:11<1811::aid-zaac1811>3.0.co;2-w

✦ Synopsis

The trichlorides of yttrium, samarium, and lutetium react with 2 equivalents of Na[C 5 H 4 t Bu] and 1 equivalent of NaBH 4 to give [(g 5 -C 5 H 4 t Bu) 2 LnBH 4 (THF)] (Ln = Y (1), Sm (2), Lu (3)) or with 2 equivalents of Na[C 5 Me 4 R] and 1 equivalent of NaBH 4 to form [(g 5 -C 5 Me 4 R) 2 ĹnBH 4 (THF)] (R = H, Ln = Y (4), Sm (5), Lu (6); R = Me, Ln = Y (7), Sm (8), Lu (9); R = Et, Ln = Y (10), Sm (11), Lu (12); R = i Pr, Ln = Y (13), Sm (14), Lu (15)). The new com-pounds have been characterized by elemental analysis, NMR spectroscopy and mass spectrometry. The crystal structures of 8 and 10 were determined by single crystal X-ray diffraction.