摘要

Three hybrid polymeric iodoplumbates constructed from morpholine and its derivatives, {(Pb4I15)[(Mph center dot H)(3)(Mph center dot 1.5H)(2)]}(n)(1), {(edm-H-2)(Pb3I8)]center dot 2DMF}(n)(2), {(edm-H-2)[(dmp)(Pb4I12)](center dot)2DMF}(n) (3) (Mph = morpholine, edm = ethylenedimorpholine, dmp(2+) = N, N'-dispiromorpholinopiperazonium) have been synthesized and structurally determined. In these compounds, morpholine and its derivatives weakly interact with or covalently bond to polymeric iodoplumbates. In 1, hydrogen bonds between (Pb4I15)(7-) clusters and protonized Mph contribute to the formation of a 1-D hybrid chain. In 2, the 1-D [(Pb3I8)](n)(2n-) chain is extended to be a 2-D layer via the edm(2+) ligand by means of Pb-O covalent bonds. Interestingly, the 2-D [(Pb4I12)](n)(4n-) inorganic layer in 3 is concertedly templated by two kinds of organic cations. The above compounds exhibit a semiconductor nature, and third-order nonlinear optical (NLO) activities can be detected in 1 and 3.