Crystal structure of tricarbonyl(N-diphenylphosphanyl-N,N′-diisopropyl-P-phenylphosphonous diamide-κ²P,P′)cobalt(I) tetracarbonylcobaltate(−I) toluene 0.25-solvate

Abstract

The title compound {Co(CO)3[Ph2PN(i-Pr)P(Ph)N(H)i-Pr]}[Co(CO)4] is an ionic species consisting of a Co(CO)3[Ph2PN(i-Pr)P(Ph)N(H)i-Pr] cation and a [Co(CO)4] anion.

Cobalt Carbonyls Stabilized by N,P‐Ligands: Synthesis, Structure, and Catalytic Property for Ethylene Oxide Hydroalkoxycarbonylation

“…However, it is worth noting that the coordination number at cationic Co center in 3 and 6 – 7 are same and the geometry at cationic Co centers are similar. The [Co(CO) 4 ] − counterions each in 3 and 6 – 7 display almost the same tetrahedral geometry within the standard error, which compare well with those found in other ion‐pair complexes having the cations as [ i BuN(PPh 2 ) 2 ‐κ 2 ‐ P , P ‐Co(CO)‐κ 1 ‐ P ‐ i BuN(PPh 2 ) 2 ] + , [13c] [(Ph 2 P)N( i Pr)P((Ph)NH i Pr)Co‐(CO) 3 ] + , [13d] [(OEP)Cr(THF) 2 ] + (OEP=octaethylporphyrinato), [7c] [(salph)Al‐(THF) 2 ] + (salph= N,N ’‐bis(3,5‐di‐ tert ‐butylsalicylidene)‐1,2‐phenylenediamine), [7b] and [(R,R‐salcy)Al(THF) 2 ] + (R,R‐salcy=(R,R)‐ N,N’ ‐bis(3,5‐di‐ tert ‐butylsalicylidene)‐1,2‐cyclohexanedi‐amine) [7e] . Compounds 4 and 5 exhibit the ligand chelation at each of the two Co centers with the P−Co bond lengths of 2.195(1)–2.206(1) Å and P−Co−P bond angles of 71.85(4)–71.96(2)°.…”