92641-77-5Relevant academic research and scientific papers
Synthesis and X-ray crystal structures of an analogous pair of iron formyl and iron acetyl complexes
Casey, Charles P.,Meszaros, Mark W.,Neumann, Stephen M.,Cesa, Irene Gennick,Haller, Kenneth J.
, p. 143 - 149 (2008/10/08)
The reaction of K+HB(O-i-Pr)3- with Fe(CO)4[P(OC6H5)3] (9) and with Re2(CO)10 produced the isolated metal formyl complexes N(CH2CH3)4+[trans-(CO) 3[(C6H5O)3P]FeCHO]- (1) and N(CH2CH3)4+[cis-(CO) 9Re2CHO]- (3). Similarly reaction of CH3Li with 9 gave the analogous acetyl complex N-(CH2CH3)4+[trans-(CO) 3[(C6H5O)3P]FeCOCH3] -, 4. The structures of the closely analogous formyl 1 and acetyl 4 complexes were determined by X-ray crystallography. 1 crystallizes in space group P21/n with four molecules in the unit cell of dimensions a = 10.037 (2) ?, b = 18.588 (3) ?, c = 16.292 (4) ?, β = 90.05 (2)°, V = 3039.5 ?3, R = 0.047, and Rw = 0.057. 4 crystallizes in space group P21/n with four molecules in the unit cell of dimensions a = 9.956 (2) ?, b = 19.374 (4) ?, c = 16.180 (3) ?, β = 96.35 (2)°, V = 3101.8 ?3, R = 0.062, and Rw = 0.082. The structure of formyl complex 1 and acetyl complex 4 are remarkably similar with the exception that the 1.166 (4) ? C=O bond length of the formyl ligand of 1 is substantially shorter than the 1.226 (5) ? C=O bond length of the acetyl ligand of 4.
