TY - JOUR
T1 - Mono- And bilayered lead(II)-bpno polymers with unusual low energy emission properties (bpno = 4,4′-bipyridine N,N′-dioxide)
AU - Xu, Yanqing
AU - Yuan, Daqiang
AU - Han, Lei
AU - Ma, En
AU - Wu, Mingyan
AU - Lin, Zhengzhong
AU - Hong, Maochun
PY - 2005/6/6
Y1 - 2005/6/6
N2 - Reaction of 4,4′-bipyridine N,N′-dioxide (bpno) and lead(II) nitrate with or without dicyanamido ions (dca) in aqueous solution yielded polymeric complexes {Pb2(bpno)4(dca)2-(NO 3)2Pb2(bpno)4(NO3) 4·5H2O}n (1) and {Pb(bpno)(NO 3)2· H2O}n (2), respectively. The single-crystal X-ray analyses show that the structures of both complexes consist of dinuclear PbII units which are bridged through bpno ligands in novel modes to extend their topologies. Compound 1 exhibits a bilayered rhombus grid, while 2 displays a monolayered rhombus grid. The different excitations of solid samples of 1 and 2, at room temperature, produced intense emission bands which are almost the same in appearance with peak maxima at 616 nm and 617 nm, respectively. Both low-energy emissions were determined to be phosphorescence by their long decay lifetime at room temperature.
AB - Reaction of 4,4′-bipyridine N,N′-dioxide (bpno) and lead(II) nitrate with or without dicyanamido ions (dca) in aqueous solution yielded polymeric complexes {Pb2(bpno)4(dca)2-(NO 3)2Pb2(bpno)4(NO3) 4·5H2O}n (1) and {Pb(bpno)(NO 3)2· H2O}n (2), respectively. The single-crystal X-ray analyses show that the structures of both complexes consist of dinuclear PbII units which are bridged through bpno ligands in novel modes to extend their topologies. Compound 1 exhibits a bilayered rhombus grid, while 2 displays a monolayered rhombus grid. The different excitations of solid samples of 1 and 2, at room temperature, produced intense emission bands which are almost the same in appearance with peak maxima at 616 nm and 617 nm, respectively. Both low-energy emissions were determined to be phosphorescence by their long decay lifetime at room temperature.
KW - 4,4′-Bipyridine N,N′ -dioxide
KW - Coordination polymers
KW - Lead complexes
KW - Phosphorescence
UR - http://www.scopus.com/inward/record.url?scp=20444450209&partnerID=8YFLogxK
U2 - 10.1002/ejic.200400921
DO - 10.1002/ejic.200400921
M3 - Article
AN - SCOPUS:20444450209
SN - 1434-1948
SP - 2054
EP - 2059
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
IS - 11
ER -