Pt(II) and Pd(II) Complexes with 𝜷-Alanine

Table 1

NMR spectral data for -AlaH and the Pt(II) and Pd(II) complexes with -AlaH.

Complex (solvent)	^195Pt NMR, , ppm	^1H NMR, , ppm			^13C NMR, , ppm
		NH2	CH2–NH2	CH2–COO	COOH	COO^−	CH2–NH2	CH2–COO
N𝑅int–(CH2)2–COO^− (D2O)	—	—	3,10	2,48	179,1		37,30	34,29
Trans-[Pt(-AlaH)2Cl2] (acetone-d6)	−2248	4,29𝑅1 = 50 Hz	2,98	2,91	172,9		41,90	33,36
Trans-[Pd(-AlaH)2Cl2] (acetone-d6)	—	3,45	2,93	2,87	172,7		40,57	34,01
Trans-[Pt(-Ala)2] (D2O)	−1708	—	2,81	2,44	—		—	—
Cis-[Pt(-Ala)2] (D2O)	−1930	5,17^*𝑤𝑅2 = 60 Hz	2,76𝛽 = 45 Hz	2,43	180,2		41,87𝛽 = 30 Hz	36,36Å^3 = 22 Hz
Trans-[Pd(-Ala)2] (D2O)	—	—	2,49	2,38	181,7		38,48	37,82
Cis-[Pd(-Ala)2] (D2O)	—	4,34^*	2,59	2,46	180,6		39,86	37,04

^* Residual NH₂ protons.