Related Products of 12150-46-8, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene, molecular formula is C34H28FeP2. In a Article£¬once mentioned of 12150-46-8
Synthesis and Chemistry of Dithiadiazole Free Radicals [4-(4′-C5H4N)CN2S2] and [4(3′-5H4N)CN2S2] X-ray crystal structures of Pd3 -SNC(Ar’)NS-S,S’2(PPh3)4] (Ar’=4′-C5H4N,4′-C5H4NBEt3 and 3′-C5H4NBEt3)
Two new 1,2,3,5-dithiadiazoles, [4-(4′-C5H4N)CN2S2] (L1) and [4- (3′-C5H4N)CN2S2] (L2), with different pyridyl groups at the 4-position were prepared. As Lewis bases, the dithiadiazoles reacted with Lewis acids via their pyridyl groups to form acid-base adducts with retention of the five-membered dithiadiazole ring. Ligands L1 and L2 reacted with excess triethylborane to give L1BEt3 and L2BEt3 (1a and 1b) and with Mn(CO)5Br to give the fac-Mn(CO)3Br(L1)2 (2a) and fac-Mn(CO)3Br(L2)2 (2b) complexes. When reacted with Pd0 complexes, namely, Pd(PPh3)4 and a mixture of [Pd2(dba)3] and dppf, the dithiadiazoles underwent ring-opening reaction by reductive cleavage of the S-S bond of the dithiadiazole ring. The resulting formation of Pd-S bonds gave the corresponding trinuclear complexes [Pd3a??I?-SNC (4′-C5H4N)NS-S,S’a??2(PPh3)4] (3a), [Pd3a??I?-SNC(3′- C5H4N)NS-S,S’a??2(PPh3)4] (3b), and [Pd3a??I?-SNC(4′-C5H4N)NS- S,S’a??2(dppf)2] (4) [dba = dibenzylideneacetone, dppf = 1,1′- bis(diphenylphosphanyl)ferrocene]. Complexes 3a and 3b reacted with excess triethylborane to give the corresponding acid-base adducts [Pd3a??I?-SNC(4′- C5H4NBEt3)NS-S,S’a??2(PPh3)4] (5a) and [Pd3a??I?SNC(3′-C5H4NBEt3)NS- S,S’a??2(PPh3)4] (5b.) Complex 3a reacted with Mn(CO)5Br to give a??[Pd3a??I?-SNC(4′-C5H4N)NS-S,S’a??2(PPh3)4][MnBr(CO)3]a??n (6). The structures of 3a, 5a, and 5b were established by X-ray crystallography.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 12150-46-8 is helpful to your research., Related Products of 12150-46-8
Reference£º
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate