Metal Compounds that bond covalently

I would like to ask if anyone has a list or knows which covalent compounds have metals in them. For example, beryllium and aluminium are both metals but they bond covalently with chlorine to form beryllium chloride and aluminium chloride respectively. Other than these 2 compounds, I do not know any other and thus would like to ask this question.

Answer

There is no sharp line between ionic, metallic or covalent bonds.

Most of transition metal oxides and sulfates have strong covalent characteristics. For example, the whole reason of using ligand field theory instead of crystal field theory is that the ionic description (CFT) breaks down, and the covalent effects are important in all but the simplest cases.

If you want to take even more covalent molecules, look for organometallic compounds, metal carbonyls, metallocenes, etc.