Synthesis and characterization of a rare hemiacetalate bridged incomplete Cu4II dicubane cluster
摘要:
Reaction of 2-pyridinecarboxaldehyde [(Py)CHO] with Cu(NO3)(2)center dot 2.5H(2)O in the presence of 4-aminopyridine and NaN3 in MeOH lead to an incomplete double-cubane [Cu-4{PyCH(O)(OMe)}(4)(N-3)(4)] (1) in 87% isolated yield, representing a rare type of metal cluster containing bridging hemiacetalate ligand [pyCH(O)(OMe)](-1) which was characterized by single crystal structure analysis and variable temperature magnetic behavior. (C) 2009 Elsevier B.V. All rights reserved.