| Wu L-D, Lin C-T, Chen C-C, Lee S-Y |
------>authors3_c=None ------>paper_class1=2 ------>Impact_Factor=None ------>paper_class3=0 ------>paper_class2=0 ------>vol= ------>confirm_bywho=seanlee ------>insert_bywho=seanlee ------>Jurnal_Rank=None ------>authors4_c=None ------>comm_author= ------>patent_EDate=None ------>authors5_c=None ------>publish_day=None ------>paper_class2Letter=None ------>page2= ------>medlineContent= ------>unit=F0200 ------>insert_date=20000508 ------>iam=4 ------>update_date= ------>author=??? ------>change_event=5 ------>ISSN=None ------>authors_c=None ------>score=37 ------>journal_name=?????????????????? ------>paper_name=3-D?????:????????????????. ------>confirm_date=20010327 ------>tch_id=083005 ------>pmid=19921067 ------>page1=28 ------>fullAbstract=Complexes with the ligand 4,6-dimethyl-1,2,3-triazolo-[4,5-d]-pyrimidin-5,7-dionato (dmax(-)) and the auxiliary chelating-bridging ligand bipyrimidine (bpym) have been synthesized and structurally characterized for the divalent cations of Zn, Cd and Cu. For Zn and Cd, dinuclear complexes with the formulae [Zn(2)(dmax)(4)(H(2)O)(2)(bpym)].2H(2)O and [Cd(2)(dmax)(4)(H(2)O)(4)(bpym)].6H(2)O have been isolated whereas for Cu, the one-dimensional polymer {[Cu(2)(dmax)(4)(bpym)].5H(2)O}(n) has been obtained. Bpym acts as a chelating-bridging ligand in the three compounds, joining couples of metal ions. Two crystallographically and chemically different dmax(-) ligands are present in each of these complexes, one monodentately linked via the triazole N atom furthest from the pyrimidine ring (N2) and the other either monodentately linked via the triazole N atom closer to a carbonyl group (N1, Zn and Cd compounds) or in bridging N1-N2 mode (Cu compound), in the latter case generating an one-dimensional polymer with alternating bpym and (dmax)(2) bridges. The magnetic interaction across the bpym bridge gives rise to a strong antiferromagnetic interaction (2J = -201 cm(-1)), whereas that across the (dmax)(2) bridge is negligible and cannot be reliably determined (obscured by the strong one). The hydrogen bonds between water molecules and the triazolopyrimidine derivative build the 3-D structure of the compounds. ------>tmu_sno=None ------>sno=1217 ------>authors2=None ------>authors3=None ------>authors4=None ------>authors5=None ------>authors6=None ------>authors6_c=None ------>authors=Wu L-D, Lin C-T, Chen C-C, Lee S-Y ------>delete_flag=0 ------>SCI_JNo=None ------>authors2_c=None ------>publish_area=None ------>updateTitle=Versatile binding behaviour of 4,6-dimethyl-1,2,3-triazolo[4,5-d]-pyrimidin-5,7-dionato in the presence of bipyrimidine. Supramolecular H-bond architectures. ------>language=1 ------>check_flag= ------>submit_date= ------>country=None ------>no= ------>patent_SDate=None ------>update_bywho= ------>publish_year=1999 ------>submit_flag= ------>publish_month=None |