The seven-coordinate hydrido-tantalum complexes 6-n(oligophos)>: preparation and dynamics
The hydrido complexes cis-2> (P2 = Ph2PCH2CH2PPh2), HTa(CO)3Pm (Pm = P3: PhP(CH2CH2PPh2)2, P4: 2, PP3: P(CH2CH2PPh2)3) have been obtained from the photo-chemically produced complexes m> by ion-exchange chromatography on silica gel.The anionic and neutral complexes have been characterized by IR and 31P and 1H NMR spectroscopy.The temperature-dependent 1H(hydride)-31P NMR coupling patterns are interpreted in terms os a hydride-capped octahedral structure with restricted migration of the H(-) ligand between the octahedral faces.
Rehder, Dieter,Fornalczy, Michael,Oltmanns, Peter
p. 207 - 220
(2007/10/02)
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