What is the charge on Pd when it is coordinated with triphenylphosphine? PPh3.
Pd(PPh3)4 ....
Google tells me the PPh3 is a neutral ligand, how can this be if the metal has to have a charge associated with it?
In coordination chemistry, ligands like triphenylphosphine (PPh3) can be neutral molecules or ions that donate electron pairs to a central metal atom or ion. When PPh3 forms a coordination complex with palladium (Pd), each PPh3 ligand donates a pair of electrons to Pd. The PPh3 ligands are not charged themselves, but they form coordinate bonds with the Pd atom through the donation of electron pairs.
In the case of Pd(PPh3)4, there are four PPh3 ligands coordinated with one Pd atom. Since each PPh3 ligand donates a pair of electrons to Pd, the Pd atom ends up with a +2 charge to balance the electron donation from the four PPh3 ligands. The overall charge of the complex is then determined by the charge on the Pd atom, which in this case is +2.
To determine the charge on the metal when it is coordinated with ligands, it is important to consider the number of ligands, their charge, and the electron donation or acceptance that occurs during bonding.