Table 1. Systematic Variations Applied for the Synthesis of PdNPs^a.

	ligandb	TOABc	NaBH4d	T (°C)
i	2	10	20	22
ii	2	10	20	60
iii	2	5	20	22
iv	1	10	20	22
v	1	10	5	22

^aThe numbers (equivalents) in the first three columns are against 1 equiv of K₂PdCl₄.

^bWhen less than 1 equiv of sodium S-dodecylthiosulfate is used, the irreversible aggregation of PdNPs took place after the addition of NaBH₄.

^cA minimum of 5 equiv of tetra-n-octylammonium bromide was needed for the complete phase transfer of ligand precursors and reducing agents to the organic phase.

^dA minimum of 5 equiv of sodium borohydride was necessary for the complete reduction of PdCL₄²⁻.