摘要:
In the presence of NaOH, the self-assembly of M(CH3COO)(2) and nitrilotriacetate generated two metal-organic polymers, MNa(NTA), (M = Pb(1), Sr(2), NTA(3+) = the anion of nitrilotriacetate). The single crystal X-ray diffraction shows that polymers 1 and 2 are isostructural and display the chiral P2(1)3 space group with the Flack factor of -0.001(16) for 1 and 0.023(14) for 2. By topology analysis, the complicated architecture of 1 and 2 is simplified to be the 6-connected pcu-type net, which is built on the vertex-shared, bowl-like MNa3 SBUs (pcu = primitive centered cubic, SBU = secondary building unit). (C) 2007 Elsevier B.V. All rights reserved.