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Organometallic Niobium and Tantalum Complexes with Primary Phosphine Ligands: Syntheses and Molecular Structures of [Cp*MCl 4 (PH 2 R)] (M = Nb, Ta; Cp* = C 5 Me 5 ;R = Bu t , Ad, Cy, Ph, 2, 4, 6‐Me 3 C 6 H 2 (Mes))
Author(s) -
Blaurock Steffen,
HeyHawkins Evamarie
Publication year - 2002
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(200211)628:11<2515::aid-zaac2515>3.0.co;2-q
Subject(s) - chemistry , phosphine , crystal structure , toluene , monomer , tantalum , stereochemistry , medicinal chemistry , crystallography , organic chemistry , polymer , catalysis
The reaction of [Cp*MCl 4 ] (M = Nb, Ta; Cp* = C 5 Me 5 ) with PH 2 R in toluene at room temperature gives the primary phosphine complexes [Cp*MCl 4 (PH 2 R)] [Cp* = C 5 Me 5 ; M = Nb: R = Bu t ( 1a ), Ad ( 2a ), Cy ( 3a ), Ph ( 4a ), 2, 4, 6‐Me 3 C 6 H 2 (Mes) ( 5a ); M = Ta: R = Bu t ( 1b ), Ad ( 2b ), Cy ( 3b ), Ph ( 4b ), Mes ( 5b )] in high yield. 1—5 were characterized spectroscopically (NMR, IR, MS) and by crystal structure determinations. The starting material [Cp*TaCl 4 ] is monomeric in the solid state, as shown by crystal structure determination.