Apical positions 2 Atoms 2 Chromophores 2 Complex molecules 2 Complexation 2 Copper 2 Copper (ii) 2 Copper complexes 2 Copper compounds 2 Crystallography, X-Ray 2 Dihydrogen 2 Dimerization 2 Dinuclear units 2 Ditiocarb 2 Hydrates 2 Hydration 2 Hydrogen 2 Hydrogen Bonding 2 Hydrogen bonds 2 Ions 2 Molecular Structure 2 Monomeric units 2 Organometallic Compounds 2 Phosphate group 2 Pyridines 2 Square pyramid 2 Terpyridines 2 X ray crystallography 2 article 2 bis((dihydrogen pyrophosphato kappa(2)O,O')(2,2':6',2'' terpyridine kappa(3)N,N',N'')copper(II)) 4.5 hydrate 2