Synthesis and characterization of a series of trans-[Mo(CO)5(R2PNHCH2CH2NC HC6H4-o-O)]2M (R2 Ph2, OCH2CMe2CH2O; M Co, Ni, Cu) complexes and the crystal structure of...

Academic Article

Abstract

  • Title full: Synthesis and characterization of a series of trans-[Mo(CO) (R PNHCH CH NC HC H -o-O)] M (R Ph , OCH CMe CH O; M Co, Ni, Cu) complexes and the crystal structure of trans-[Mo(CO) (Ph PNHCH -CH -NCHC H -o-O)] Ni · 2Et O. A series of heterotrinuclear complexes of the type trans-[Mo(CO) (R PNHCH CH NC HC H -o-O)] M (R Ph , OCH CMe CH O; M Co, Ni, Cu) have been synthesized and characterized by multinuclear NMR, IR and VIS-NIR spectroscopy and by measurement of solution magnetic susceptibilities. These studies indicate that the coordination environment of the high spin Co ion is octahedral while that of the diamagnetic Ni ion is square planar. Coordination of the Ni ion to the mononuclear Mo(CO) (R PNHCH CH NCHC H -o-OH) complexes causes quite different effects in the spectra of the diphenylphosphino and dioxaphosphorinane complexes. These differences appear to be due to differences in the intramolecular interactions between the P substituents and bis(salicyladiminato)M groups. The molecular structure of trans-[Mo(CO) (R PNHCH CH NC HC H -o-O)] Ni · 2Et O has been determined. The complex cystallizes from an HOAc/THF/Et O mixture in the monoclinic space group C2/c (crystal data: a 37.71(1), b 9.822(1), c 17.91(1) Å; α = γ = 90.00(0)°, β 105.45(6)°; Z = 4). The Ni ion is coordinated to two salicylaldiminato groups in a non-tetrahedrally distorted square planar geometry while the Mo is coordinated to five COs and a P in a slightly distorted octahedral geometry. An interesting feature of the structure is the nearly planar stacking of a phenyl ring on each P with the bis(salicylaldiminato)Ni group. © 1988. 5 2 2 2 6 4 2 2 2 2 2 2 5 2 2 2 6 4 2 2 5 2 2 2 6 4 2 2 2 2 2 2 5 2 2 2 6 4 5 2 2 2 6 4 2 2 2 2+ 2+ 2+ 2+
  • Authors

    Published In

    Digital Object Identifier (doi)

    Author List

  • Gray GM; Takada N; Zell AL; Einspahr H
  • Start Page

  • 339
  • End Page

  • 351
  • Volume

  • 342
  • Issue

  • 3