McNaughter Paul D, Saah Selina A, Akhtar Masood, Abdulwahab Khadijat, Malik M Azad, Raftery James, Awudza Johannes A M, O'Brien Paul
School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK. paul.o'
Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
Dalton Trans. 2016 Oct 18;45(41):16345-16353. doi: 10.1039/c6dt02859d.
A series of lead(ii) alkylxanthates, [Pb(SCOR)] (R = ethyl (1), n-propyl (2), n-butyl (3), n-hexyl (4) or n-octyl (5)) have been prepared and explored as single source precursors for use in melt reactions to form lead sulfide. X-ray single crystal structures of (2), (3) and (4) were used along with previously reported structures to investigate the influence of structure and chain length on the materials produced. The complexes were decomposed at 150, 175 or 200 °C forming PbS nanocrystals as confirmed by XRD and TEM. Analysis by SEM shows that the choice of precursor had an influence on nanocrystal size with longer alkyl chains resulting in smaller cubic nanocrystals. In addition to cubes, anisotropic growth was observed from decomposition of compound (5).
已制备出一系列二价铅烷基黄原酸盐，即[Pb(SCOR)]（R = 乙基 (1)、正丙基 (2)、正丁基 (3)、正己基 (4) 或正辛基 (5)），并将其作为单源前驱体用于熔融反应以制备硫化铅进行了探索。利用(2)、(3)和(4)的X射线单晶结构以及先前报道的结构来研究结构和链长对所制备材料的影响。通过XRD和TEM证实，这些配合物在150、175或200°C下分解形成硫化铅纳米晶体。SEM分析表明，前驱体的选择对纳米晶体尺寸有影响，较长的烷基链会导致形成较小的立方纳米晶体。除了立方体形状外，还观察到化合物(5)分解产生各向异性生长。
