Carbonyl-isocyanide mono-substitution in [Fe2Cp2(CO)4]: A re-visitation

نویسندگان

چکیده

Abstract The reactions of [Fe2Cp2(CO)4] with a series isocyanides, CNR, were conducted in acetonitrile and afforded, after thermal treatment, the mono-isocyanide derivatives [Fe2Cp2(CO)3(CNR)] [R = 1H-indol-5-yl, 1; CH2P(O)(OEt)2, 2; Cy = C6H11, 3; 4-C6H4OMe, 4; Xyl = 2,6-C6H3Me2, 5; Me, 6; 2-naphthyl, 7; Bn = CH2Ph, 8]. In order to avoid multiple substitution, diiron reactant was used molar excess respect isocyanide (1.6 equivalents; 1.1 for synthesis 8). products separated from unreacted by chromatography or via reversible protonation, finally isolated 50–83% yields. IR NMR spectroscopy indicate that ligand is bridging coordinated 2 7, terminal 3 5, while remaining cases mixture terminal- bridging-CNR isomers obtained. molecular structure 5 ascertained X-ray diffraction. general, coordination mode scarcely influenced environment (solvents different polarities, solid state). Sluggish partial migration position recognized upon heating refluxing toluene, process which reproduced DFT calculations.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Synthesis and Anticancer Activity of Mono-Carbonyl Analogues of Curcumin

Curcumin has been reported to possess multifunctional bioactivities with low toxicity. However, the clinical application of curcumin has been significantly limited by its instability and poor metabolic property. Up to now, multiple approaches are being sought to overcome these limitations to obtaining “super curcumin”, and many analogues of curcumin have been designed and synthesized. In all of...

متن کامل

Synthesis of transition metal isocyanide compounds from carbonyl complexes via reaction with Li[Me3SiNR].

The reaction between a transition metal carbonyl compound, L(n)MCO, and Li[Me(3)SiNR] yields the corresponding isocyanide derivative, L(n)MCNR, thereby providing a new route to transition metal isocyanide compounds that does not require the use of free isocyanides as reagents.

متن کامل

A data-intensive re-evaluation of semibridging carbonyl ligands.

Structural data pertaining to bimetallic complexes with semibridging carbonyl (SBCO) ligands are analyzed using a comprehensive search of the Cambridge Structural Database (CSD). A brief review of the history of SBCO structures is presented, and this history is evaluated in light of the vastly larger dataset available today from the CSD. Additionally, computational analysis is used to reinforce...

متن کامل

Indenyl effect in dissociative reactions. Nucleophilic substitution in iron carbonyl complexes: a case study.

The mechanism of carbonyl substitution in [Fe(Ind)(CO)(2)I] (Ind = C(9)H(7)(-), indenyl) by P(OMe)(3) was investigated by means of DFT calculations. The most favourable path involves a spin crossover of the complex from the ground state singlet to the triplet potential energy surface (S = 1), followed by dissociative loss of CO, and phosphite addition to the coordinatively unsaturated intermedi...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Inorganica Chimica Acta

سال: 2021

ISSN: ['1873-3255', '0020-1693']

DOI: https://doi.org/10.1016/j.ica.2020.120181