Tetraazamacrocycle functionalized with pendant pyrazole groups: synthesis of the octadentate ligand 1,4,7,10-tetrakis(1-pyrazolylmethyl)-1,4,7,10-tetraazacyclododecane (L) and its transformation to the ligand 1,4,7-tris(1-pyrazolylmethyl)-10-((ethyloxy)methyl)-1,4,7,10-tetraazacyclododecane (L'). Structural characterizations of the complexes [NiL]I2, [NiL'](BPh4)2.cntdot.2(CH3)2CO, and [ZnL'](BPh4)2.cntdot.(CH3)2CO