71936-46-4

Upstream product

• 14516-54-2 bromopentacarbonylmanganese(I) 
• 22031-12-5 [2-((diphenylphospino)methyl)-2-methyl-1,3-propanediyl]bis[diphenylphosphine] 
• 148555-32-2 fac-bromo{η2-P,P-2,2-bis((diphenylphosphino)methyl)-1-(diphenylphosphino)propane}tricarbonylmanganese(I) 

Relevant academic research and scientific papers

Study of the effects on coordination of thioether sites. 1. Complexation study of bromopentacarbonylmanganese(I) with tripodal P3-nSn (n = 0-3) ligands

Manganese(I) complexes fac-(η2-P3-nSn)Mn(CO)3Br (n = 0-3) [P3 W = Z = PPh2; P2S W = PPh2, Z = SPh; PS2 Z = SPh, W = PPh2; S3 W = Z = SPh in CH3C(CH2W)2(CH2Z)] formed from the corresponding tripodal ligand have been prepared and isolated as pairs of isomers. The reaction of P2S with BrMn(CO)5 in chloroform produced a pair of stereoisomers, syn-fac-(P,P′-P2S)Mn(CO)3Br (1a) and anti-fac-(P,P′-P2S)Mn(CO)3Br (1b), which were separated and fully characterized. Equilibration (K1 = 2/3) between 1a and 1b was established. For PS2, the equilibrium constant (K2) between syn-fac-(P,S-PS2)Mn(CO)3Br (2a) and anti-fac-(P,S-PS2)Mn(CO)3Br (2b) was unity. Kinetic studies of isomerization of 1a to 1b and 2a to 2b were carried out by using an NMR spectrometer. The activation parameters were obtained: ΔH?1a = 30.5 ± 0.4 kcal/mol, ΔS?1a = 11 ± 1 eu for complex 1a; ΔH?2a = 24.9 ± 0.7 kcal/mol, ΔS?2a = 7 ± 2 eu for complex 2a. A mechanistic pathway for these isomerizations is proposed. Crystal structures were determined for three complexes: 1a, 1b, and 2a. X-ray data were collected on a CAD-4 diffractometer at room temperature and were refined by a least-squares treatment. For 1a: a = 10.669(2) A?, b = 17.864(3) A?, c = 18.841(12) A?, β = 105.30(2)°, monoclinic, Z = 4, P21/c, R(Fo) = 0.051, Rw(Fo) = 0.042 for 3043 reflections with Io > 2σ(Io). For 2b: a = 10.855(3) A?, b = 20.322(7) A?, c = 17.887(9) A?, β = 104.73(3)°, monoclinic, Z = 4, P21/n, R(Fo) = 0.059, Rw(Fo) = 0.047 for 3316 reflections with Io > 2σ(Io). For 2a: a = 8.670(5) A?, b = 9.539(3) A?, c = 18.921(9) A?, a = 93.09(3)°, β = 90.27(5)°, γ = 101.21(4)°, triclinic, Z = 2, P1, R(Fo) = 0.052, Rw(Fo) = 0.054 for 2513 reflections with Io > 2σ(Io). The conformations of the chelate rings are discussed.

Reactions of M(CO)5X (M = Mn, Re; X = Cl, Br) with {Ph2PCH2}3CCH3 (P3) and {Ph2P(CH2)2}3P (P3P'): Synthetic, spectroscopic, electroche

The reactions of M(CO)5X (M = Mn, Re; X = Cl, Br) with {Ph2PCH2}3CCH3 (P3) and {Ph2P(CH2)2}3P (P3P') are investigated, and the product