95099-93-7Relevant academic research and scientific papers
Reactions of ethyl cyanoformate with (np3)Ni, (np3)CoH [np3 = N(CH2CH2PPh2)3], and (triphos)Ni [triphos = MeC(CH2PPh2)3]. Crystal structures of the ethoxycarbonyl complexes [(np3)Ni(CO2Et)]BPh4 and (triphos)Ni(CN)(CO2Et)
Bianchini, Claudio,Masi, Dante,Meli, Andrea,Sabat, Michal
, p. 1670 - 1675 (2008/10/08)
Ethyl cyanoformate, NCCO2Et, is used as starting material to introduce ethoxycarbonyl and/or cyanide groups into complex frameworks. Thus, NCOO2Et reacts with the Ni(0) complex (np3)Ni (1) [np3 = N(CH2CH2PPh2)3] or with the Ni(0) fragment (triphos)Ni [triphos = MeC(CH2PPh2)3] to give [(np3)-Ni(CO2Et)]+ (3) and (triphos)Ni(CN)(CO2Et) (4), respectively. The crystal structures of 3·BPh4 and 4 have been determined by standard X-ray methods. Compound 3·BPh4 crystallizes in the monoclinic space group C2/c with a = 33.429 (10) A?, b = 8.929 (2) A?, c = 38.773 (11) A?, β = 100.25 (2)°, and Z = 8. The structure was refined to an R factor of 0.068 (Rw = 0.068) by using 2908 reflections with I > 3σ(I). The coordination polyhedron of the nickel(II) atom can be described as a trigonal bipyramid whose equatorial plane is defined by the three phosphorus atoms of np3. Compound 4 crystallizes in the orthorhombic space group Pn21a with a = 26.957 (8) A?, b = 13.480 (4) A?, c = 10.690 (3) A?, and Z = 4. The structure was refined to an R factor of 0.055 (Rw = 0.056) by using 1897 reflections with I > 3σ(I). The compound exhibits quite regular square-pyramidal environment of the nickel(II) atom. Reaction of NCCO2Et with the Co(I) hydride (np3)CoH (5) yields (np3)Co(CN) and HCO2Et.
SYNTHESIS AND REACTIVITY TOWARD REDUCING AGENTS OF THE ETHOXYCARBONYL COMPLEX BPh4 (np3 = tris(2-diphenylphosphinoethyl)amine)
Bianchini, Claudio,Meli, Andrea
, p. 413 - 420 (2007/10/02)
The ethoxycarbonyl complex has been synthesized by ethoxide ion attack on (np3)Ni(CO) (3) or BPh4 (4).Compound 2 reacts with LiHBEt3, NaBH4, MeMgI, NaC10H8, or MeLi to give t
