Nona- and undecanuclear nickel phosphonate cages

CuII Frameworks from Di‐2‐pyridyl Ketone and Benzene‐1,3,5‐triphosphonic Acid

“…It appears that the presence of the bulkier R–PO 3 H – groups in 2 instead of AcO – in [Cu 4 {py 2 C(OH)O} 2 (AcO) 6 ] leads to a lengthening of the Cu ··· Cu distances within the respective [Cu 2 {(py) 2 C(OH)O}] 3+ dinuclear units by approximately 0.2 Å, resulting in a considerably larger Cu–OR–Cu angle (119.04° in 2 instead of 108.44°), which is crucial for the analysis of the different magnetic properties of the two complexes. Complexes 1 and 2 join a small family of di‐2‐pyridyl ketone/phosphonate Cu II and Ni II complexes , …”

“…Complexes 1 and 2 join a small family of di-2-pyridyl ketone/phosphonate Cu II and Ni II complexes. [26,[33][34][35][36] …”

“…[32] Following this approach, we isolated a series of 1D, 2D and 3D coordination polymers and hydrogenbonded frameworks in which the various forms of the py 2 CO gave rise to the formation of dinuclear Cu II complexes that served as nodes and, in combination with the bridging bi-or polycarboxylates, led to extended frameworks. Extending this approach to bridging ligands beyond bi/polycarboxylates, poly- [26,[33][34][35][36] Results and Discussion…”

“…A thorough investigation of the Cu II /py 2 CO/H 6 btp reaction system led to the isolation of the mononuclear complex [Cu{(py) 2 C(OH) 2 } 2 ] · H 4 btp · 1.5H 2 O ( 1 ), which forms a complex 3D hydrogen‐bonded framework, and the 2D coordination polymer {[Cu 2 {(py) 2 C(OH)O}(H 3 btp)(H 2 O)] · 6H 2 O} n ( 2 ), which is based on a new [Cu 4 ] SBU. Complexes 1 and 2 join a small family of metal (Cu II and Ni II only)/py 2 CO/phosphonate complexes , …”