Reaction of (1-3-.eta.-vinylcarbene)iron complexes with enneacarbonyldiiron. Formation of a (ferracyclopentadiene)iron (Fe-Fe) complex and a vinylcarbenediiron (Fe-Fe) complex

Reaction of a (π-Vinylcarbene)iron Complex with Tricarbonyl(η4-1,5-cyclooctadiene)ruthenium. Preparation, Structure, and Reactivity of Novel (μ-Vinylcarbene)(Fe−Ru) Complexes

“…At −60 °C this broad singlet split into three sharp signals, at 208.1, 208.5, and 219.8 ppm, showing that the Fe(CO) 3 group is fluxional at ambient temperature. A similar temperature dependence was observed for 6 . In a comparison of the spectral data of 7 with those of 6 , which are also summarized in Table , 7 is deduced to be a heterobinuclear Fe−Ru vinylcarbene complex, [μ-(1-methoxy- anti -2-(methoxycarbonyl)-μ-3-(methoxycarbonyl)-1−3-η-prop-2-en-1-ylidene)]hexacarbonyl(Fe−Ru).…”

“…For the past two decades, much attention has been focused on the chemistry of mononuclear 1 − and binuclear transition-metal vinylcarbene complexes 2 , (η 4 -metallabutadiene)metal complexes 2 ‘, or η 3 :η 1 -allylidene complexes 2 ‘‘ (Chart ). − Especially, heterobinuclear vinylcarbene complexes − are of interest; however, methods of preparation of these complexes are not completely established. As for the preparation of (μ-vinylcarbene)(M 1 −M 2 ) complexes, the following two representative methods are reported: (1) reaction of (μ-methylene)(M 1 −M 2 ) 3 with alkynes (eq 1); (2) reaction of (η 1 -vinylcarbene)M 1 or 1-metallabutadiene 4 with M 2 (eq 2) .…”

Synthesis and molecular structure of EtGe(SePh)3: an unusual example of alkylation by LiEt3BH

“…1976, 421, 97 NMR spectrum of this product shows aromatic and ethyl resonances in a 3:1 ratio (o-H, 7.43 (d, 6, J = 8 Hz); m-H, 7.13 (t, 6, J = 8 Hz); p-H, 7.20 (t, 3, J = 7 Hz); CH2, 1.34 (q, 2, J = 8 Hz); CH3, 0.92 (t, 3, -7=8 Hz)). If the initial reaction solution is stirred at room temperature for 4 h and then refluxed for 20 h and worked up as described above, both Ge(SePh) 4 and EtGe(SePh)3 were isolated in yields of 20.5% and 64.2%, respectively. The 77Se NMR spectrum (2)* 0 Parameters with an asterisk were refined isotropically.…”

“…In spite of this extensive application of Superhydride over the past 10 years few examples of ethyl incorporation in an organometallic product resulting from the use of this 0.241 (5) 0.393 ( 5) 8 (1)* H3C2 -0.066 (6) 0.110 (6) 0.306 ( 6) 11 (2)* H4 0.324 ( 4 5) 9 (1)* H20 0.377 (4) 0.021 (4) 0.650 (4) 6 (D* a Parameters with an asterisk were refined isotropically. Anisotropically refined atoms are given in the form of the isotropic equivalent thermal parameter defined as C/3)[a2B(l,l) + 62B(2,2) + c2B(3,3) + a6(cos ) (1,2) + oc(cos 0)B( 1,3) + 6c(cos a)B(2,3)].…”

“…Although selenium ligand chemistry involving transition metals has been the subject of considerable work,1 relatively little has been reported concerning analogous materials with main group elements such as germanium.2 An early paper3 described the synthesis of several derivatives of the type Ge(SeR) 4, their characterization being limited to elemental analyses and melting points:…”