118772-45-5Relevant academic research and scientific papers
Transition Metal Complexations to Cyclic Organoboron Phosphorus Compounds
Koester, Roland,Seidel, Guenter,Boese, Roland,Wrackmeyer, Bernd
, p. 1941 - 1954 (2007/10/02)
The dimeric 4,5-diethyl-2,5-dihydro-2,2-dimethyl-3-organo-1-phenyl-1,2,5-phosphasilaboroles react with (ligand)transition metal compounds (CH3CN)3Cr(CO)3, Cr(CO)6; (CH3CN)3Mo(CO)3; (CH3CN)3W(CO)3; Fe(CO)5, Fe2(CO)9; Ru3(CO)12; C5H5Co(C2H4)2; Ni(C12H18) thermally or photochemically to form η1-P complexes 1-1a (X-ray analysis); (OC)5Mo-η1-1a; (OC)5W-η1-1a>, η2-C2 complexes 2-1a, (OC)5Cr-η2-1a'; (OC)5W-η2-1a, (OC)5W-η2-1a'> and mainly η4-C2PB complexes 4-1a; (OC)4Mo-η4-1a; (OC)4W-η4-1a; (OC)3Fe-η4-1a,b, (OC)3Fe-η4-1b'; (OC)3Ru-η4-1a,b, (OC)3Ru-η4-1b'; C5H5Co-η4-1a,b; Ni(η4-1a)2 (X-ray analysis), Ni2(η3, η4-1b)2>.In addition to these complexes the isomerized η4-C2PB complexes (OC)3Fe-η4-iso-1a,b and (OC)3Ru-η4-iso-1a,b are formed thermally by an exchange of the phenyl and ethyl substituents at the P and B atom. - The crystallized η1-P complexes (OC)5M-η1-2 (M = Cr, Mo, W) are formed photochemically followed by heating from the dimeric 4,5-diethyl-1,2,5,6-tetrahydro-2,2,3-trimethyl-1-phenyl-1,2,5-phosphasilaborin (2)2 and M(CO)6 (M = Cr, Mo, W). - The new transition metal complexes are compared by mass spectrometry and by the NMR data (1H, 13C, 11B, 29Si, 31P) with the corresponding transition metal complexes of the C2SiElB heterocycles (El = NR, S , Se).
