Suzuki Coupling wrong product public

Reactants
9,10-dibromoanthracene; 9-anthracene boronic acid
Product
9,10-bis(9-anthracenyl)anthracene
Catalyst
PdCl2
Base/acid
KOH
Conditions
room temperature, overnight
Yield/conversion
0%
Evidence
1H NMR aromatic region consistent with mono-substituted product; column isolation gave mono-substituted product; TLC showed reaction but messy; no clear evidence for bis-coupled product.