Palladium biphenyl N-heterocyclic carbene complexes: Synthesis, structure and their catalytic efficiency in water mediated Suzuki–Miyaura cross-coupling reaction

•Bis NHC ligand bearing biphenyl backbone synthesized.•Molecular box-type binuclear silver bis-carbene complex reported.•Synthesis and structures of palladium(II) complexes with bis-NHC documented.•Water mediated Suzuki-Miyaura cross-coupling reaction explored.