Synthesis of a T‐Shaped Cobalt(I) Complex and Its Dinitrogen Adduct.
- Resource Type
- Article
- Authors
- Sanz, Corey A.; Stein, Carolin A. M.; Fryzuk, Michael D.
- Source
- European Journal of Inorganic Chemistry. 4/30/2020, Vol. 2020 Issue 15/16, p1465-1471. 7p.
- Subject
- *COBALT
*COORDINATE covalent bond
*BAYLIS-Hillman reaction
*COBALT compounds synthesis
*SILYLATION
*HOMOGENEOUS catalysis
- Language
- ISSN
- 1434-1948
The coordination chemistry of the new NNP pincer ligand framework (QuiNacNacP) is explored with cobalt. Upon treatment of the cobalt(II) complex Co[QuiNacNacP]Cl with KC8, the formation of cobalt(I) dinitrogen complex Co[QuiNacNacP]N2 was observed. Co[QuiNacNacP]N2 crystallizes as a square planar (S = 0) complex with an essentially unactivated N2 ligand. In solution, the dinitrogen complex is in equilibrium with the paramagnetic T‐shaped complex Co[QuiNacNacP] (S = 1). The ability of Co[QuiNacNacP]Cl to act as a catalyst precursor in the reductive silylation of dinitrogen was also briefly explored. Reaction of ≈ 1000 equivalents KC8 with ≈ 1500 equivalents Me3SiCl (relative to Co[QuiNacNacP]Cl) under 1 atm of N2 furnished roughly 40 equivalents of N(SiMe3)3. [ABSTRACT FROM AUTHOR]