202283-35-0Relevant academic research and scientific papers
Synthesis of (diphosphine)Ni-bridged double-butterfly Fe/S cluster complexes and isolation of the reactive m-CO-containing anionic Fe/S cluster intermediates
Song, Li-Cheng,Li, Ling,Hu, Yuan-Yuan,Song, Hai-Bin
, p. 123 - 129 (2013)
A new series of (diphosphine)Ni-bridged double-butterfly Fe/S clusters [(μ-RS)( μ-S]CS)Fe2(CO)6]2[Ni(- diphosphine)] (1-6, R = p-MeC6H4, Ph, n-Bu; diphosphine = dppe, dppv, dppb, dppf) was prepared by a new type of sequential reactions of the m-CO-containing anions [(μ-RS)( μ-CO)Fe2(CO) 6]- (type A anions, generated in situ from Fe 3(CO)12, RSH, and Et3N) with excess CS 2, followed by treatment of the resulting m-CS2-containing anions [(μ-RS)( μ-S]CS)Fe2(CO)6]- (type B anions) with various (diphosphine)NiCl2 complexes. In addition, two of the type A anions, namely [(μ-p-MeC6H4S)( μ-CO)Fe2(CO)6]- (A1) and [(μ- PhS)( μ-CO)Fe2(CO)6]- (A2) were successfully isolated as their [Et3NH] and [Ph4P] salts, respectively. Products 1-6 as well as the two isolated complex salts A1[Et 3NH] and A1[Ph4P] were fully characterized by elemental analysis and spectroscopy, and particularly for 4, 6, A 1[Et3NH], and A2[Ph4P] by X-ray crystallography.
Synthetic and structural studies on linear and macrocyclic Pd- and Pt-bridged butterfly Fe/S cluster complexes
Song, Li-Cheng,Zhang, Long-Duo,Liu, Bei-Bei,Ding, Shu-Da,Chen, Hao,Xu, Xiu-Fang,Fan, Gui-Lan
, p. 1419 - 1429 (2017)
Three types of (diphosphine)Pd- or Pt-bridged butterfly Fe/S cluster complexes have been prepared by a simple and convenient one-pot synthetic method. The first type of such complexes involves the linear (diphosphine)Pd- or Pt-bridged double-butterfly Fe/S clusters [(μ-RS)(μ-S=CS)Fe2(CO)6]2[M-(diphosphine)] (1-12; M = Pd and Pt; R = Et, t-Bu, Ph, and p-MeC6H4; diphosphine = dppe, dppv, and dppf), which were prepared by sequential reactions of monoanions [(μ-RS)(μ-CO)-Fe2(CO)6]- (formed in situ from Fe3(CO)12, RSH, and Et3N) with excess CS2, followed by treatment of the resulting monoanions [(μ-RS)(μ-S=CS)Fe2(CO)6]- with (diphosphine)MCl2. The second type of complexes involves the macrocyclic (diphosphine)M-bridged double-butterfly Fe/S clusters [μ-S(CH2)4S-μ][(μ-S=CS)-Fe2(CO)6]2[M(diphosphine)] (13-16; M = Pd and Pt; diphosphine = dppe and dppv), which were prepared by sequential reactions of dianion [{μ-S(CH2)4S-μ}{(μ-CO)Fe2(CO)6}2]2- (generated in situ from Fe3(CO)12, dithiol HS(CH2)4SH, and Et3N) with excess CS2, followed by treatment of the resultant dianion [{μ-S(CH2)4S-μ}{(μ-S=CS)Fe2(CO)6}2]2- with (diphosphine)MCl2. In contrast, when dithiol HS(CH2)4SH was replaced by HS(CH2)3SH (a dithiol with a shorter carbon chain), the aforementioned sequential reactions afforded the third type of macrocyclic complexes which involves the (diphosphine)M-bridged quadruple-butterfly Fe/S clusters [{μ-S(CH2)3S-μ}{(μ-S=CS)Fe2(CO)6}2]2[M(diphosphine)]2 (17-20; M = Pd and Pt; diphosphine = dppe and dppv). While the two possible pathways are suggested for production of the two types of novel macrocyclic Fe/S clusters 13-20, respectively, all new complexes 1-20 have been characterized by elemental analysis, spectroscopy, and, for some of them particularly, DFT calculations and X-ray crystallography.
