Used as a catalyst precursor in organic synthesis, particularly in cross-coupling reactions such as the Suzuki and Heck reactions. It facilitates the formation of carbon-carbon bonds, which is essential in constructing complex organic molecules for pharmaceuticals, agrochemicals, and materials science. The trans configuration offers distinct reactivity and stability, making it suitable for selective transformations under mild conditions. Often employed in homogeneous catalysis due to its solubility in polar organic solvents.