▁F ., ▁Bert ome u , ▁I ., ▁Al zu et , ▁G ., ▁Bor rás , ▁J ., ▁García - Gr anda , ▁S ., ▁... ▁& ▁Ha as no ot , ▁J . ▁G . ▁( 2 0 0 2 ). ▁Cy clic ▁Tr in uc lear ▁and ▁Ch ain ▁of ▁Cy clic ▁Tr in uc lear ▁Co pper ▁( II ) ▁Comple xes ▁Cont aining ▁a ▁Py ram idal ▁Cu 3 O ▁( H ) ▁Core . ▁Cry stal ▁Struct ures ▁and ▁Mag net ic ▁Properties ▁of ▁[ C u 3 ▁( μ 3 - OH )( aa at ) ▁ 3 ▁( H 2 O ) ▁ 3 ]( NO 3 ) ▁ 2 ⊙ ▁H 2 O ▁[ aa at = ▁ 3 - Ac et yl am ino - 5 - am ino - 1 , ▁ 2 , ▁ 4 - tri az olate ] ▁and ▁{ [ C u 3 ▁( μ 3 - OH )( a at ) ▁ 3 ▁( μ 3 - SO 4 )] ⊙ ▁ 6 H 2 O } ▁n ▁[ a at = ▁ 3 - Ac et yl am ino - 1 , ▁ 2 , ▁ 4 - tri az olate ]: ▁New ▁C ases ▁of ▁Sp in - Fr ustr ated ▁Systems . ▁In organ ic ▁chem istry , ▁ 4 1 ( 2 2 ), ▁ 5 8 2 1 - 5 8 3 0 . ▁ ▁External ▁links ▁▁ ▁Official ▁site ▁of ▁the