CHARMM force field parameter for Ru(II)

I am new to Molecular Dynamics (MD) simulations and interested in performing MD simulations of a Ru(II)-coumarin complex. However, I have difficulties obtaining suitable force field parameters for the Ruthenium complex. I was wondering if anyone could kindly guide me in parameterizing the Ru(II) complex for MD simulations. Any insights, references, or suggestions on generating or obtaining Ruthenium force field parameters would be immensely helpful. I would be truly grateful for your assistance and look forward to your responses.

Thank you in advance.