¹⁵N‐NMR. and ³¹P‐NMR. Studies of palladium and platinum complexes

A Comparative Study of Platinum Di (t‐butyl) (15N2)diimine and trans‐[(PtCl2(N‐ligand)PBu3)] complexes by 195Pt‐, 31P‐ and 15N‐NMR

“…Both 15N-resonances show a further small splitting of 2.4 Hz which we assign to 3J(1SN=CH-CH='5N). A high-field shift on coordination is in agreement with the literature for other sp2 hybridized N-ligands [8]. The Ig5Pt-resonance at -50" is a four-line pattern centred at -3415 ppm (only 3 ppm away from 6 (Ig5Pt) for the four-coordinate dinuclear complex 2) and consists of a doublet, stemming from coupling to the P-atom of PBu,, further split by a single I5N-spin.…”

“…Unfortunately, our l5N-chemicaI shift data are insufficient (although the 15Ncoordination chemical shift has received some attention [7a] [8] [16]) and our ,IP-NMR.-results show no obvious trends; consequently we turn to coupling constants.…”

Mononuclear Transition Metal Complexes of 7‐Nitro‐1,3,5‐Triazaadamantane

“…This is in good agreement with the 15 N NMR solution spectra of [MCl2(n-hexylamine)2] complexes described in the literature, where a similar coordination effect was observed. [31] For M = Pd and Pt, δ is -26.5 and -37.9 ppm (Δδ vs. free n-alkylamine [28] is -28.5 and -39.9 ppm), respectively. The fact that only one N experiences a similar upfield shift in our compounds confirms the monodentate binding of NO2-TAA in 5 and 6.…”

Labile Pd-sulphur and Pt-sulphur bonds in organometallic palladium and platinum complexes [(COD)M(alkyl)(S-ligand)]n+—A speciation study

“…From the 1 H-195 Pt coupling constant of the trans-oriented olefin proton the bond strength could be quantified quite reliably. In the same way other nuclei such as 31 P in Pt phosphane complexes or 15 N in Pt amine complexes have been used to determine the binding strength of ligands [52][53][54][55][56][57][58][59].…”