Syntheses and crystal structures of [tBu3SbCr(CO)5], [tBu3BiM(CO)5] (M=Cr, W), and [tBu3BiMnCp′(CO)2] (Cp′=η5-C5H4CH3)

Synthesis, structure and reactivity of complexes containing a transition metal–bismuth bond

“…10) [121]. These structures revealed the bismuth-transition metal dative bond to be slightly longer than those in the corresponding [(CO) 5 MBiPh 3 ] (M = Cr, W).…”

Syntheses, crystal structures and DFT studies of [Me3EM(CO)5] (E=Sb, Bi; M=Cr, W), cis-[(Me3Sb)2Mo(CO)4], and [tBu3BiFe(CO)4]

“…The complexes form as colourless (1), yellow (2)(3)(4)(5), brown (6) crystalline solids. The antimony complexes 1, 2, 5 are air stable whereas the bismuth complexes 3, 4, 6 decompose in air.…”

“…Nevertheless stable transition metal carbonyl complexes with bismuthine ligands were reported already decades ago, but only very few of them were fully characterized including crystal structure analyses [3]. In our precedent publication we reported the crystal structures of several metal (Cr, W, Mn) carbonyl complexes with the ligands t Bu 3 Sb and t Bu 3 Bi [5]. We have now included also the trimethyl pnicogen complexes Syntheses of 1, 2 [6] and 3 [7] were reported before.…”

“…We have now included also the trimethyl pnicogen complexes Syntheses of 1, 2 [6] and 3 [7] were reported before. Other known transition metal carbonyl complexes with trimethylstibine or trimethylbismuthine ligands are [Me 3 SbM(CO) 4 ] M = Fe [8], Ru [6], [Me 3 SbMo(CO) 5 ] [6], [(Me 3 Sb) 2 Fe(CO) 3 ] [8], [Me 3 SbFe(CO) 3 PPh 3 ] [9], [CpFe(CO) 2 BiMe 3 )]BF 4 [10]. Also adducts of Me 3 Sb with antimony halides are known [11][12][13].…”

“…Also adducts of Me 3 Sb with antimony halides are known [11][12][13]. Crystal structures were reported for [Me 3 SbFe(CO) 4 ] [14], [Me 3 SbFe(CO) 3 PPh 3 ] [9], whereas for 1, 2, and [Me 3 SbMo(CO) 5 ] only SbÀM distances were published [6]. Related complexes with other triorganopnicogen ligands and with known crystal structures are [ t Bu 3 SbFe(CO) 4 ] [15], [Ph 3 SbM(CO) 5 ] M = Cr [16], Mo, W [17], [Ph 3 BiM(CO) 5 ] M = Cr [16], Mo, W [18], and [CpFe(CO) 2 BiPh 3 )]BF 4 [10].…”