The lead thiocyanate adduct Pb(phen)(SCN)2 (phen = 1,10-phenanthroline) has been prepared by a direct synthetic method and structurally characterized. It presents a mononuclear structure and crystallizes in monoclin...The lead thiocyanate adduct Pb(phen)(SCN)2 (phen = 1,10-phenanthroline) has been prepared by a direct synthetic method and structurally characterized. It presents a mononuclear structure and crystallizes in monoclinic, space group C2/c with a = 17.505(4), b = 13.383(3), c = 6.7916(14) ?, β = 112.25(3)o, V = 1472.6(6) ?3, Z = 4, Dc = 2.271 g/cm3, μ(MoKα) = 11.737 mm-1, F(000) = 936, C14H8N4PbS2, Mr = 503.58, the final R = 0.0446 and wR = 0.1034 for 1601 observed reflections with I > 2σ(I). Structure analysis showed that the lead atom presents an unusual four- coordination geometry with a large vacancy, possibly indicating the stereochemical activity of 6s2 lone pair electrons.展开更多
基金This work was supported by the Foundation of Education Committee of Fujian Province (JB01020 and JB03053)
文摘The lead thiocyanate adduct Pb(phen)(SCN)2 (phen = 1,10-phenanthroline) has been prepared by a direct synthetic method and structurally characterized. It presents a mononuclear structure and crystallizes in monoclinic, space group C2/c with a = 17.505(4), b = 13.383(3), c = 6.7916(14) ?, β = 112.25(3)o, V = 1472.6(6) ?3, Z = 4, Dc = 2.271 g/cm3, μ(MoKα) = 11.737 mm-1, F(000) = 936, C14H8N4PbS2, Mr = 503.58, the final R = 0.0446 and wR = 0.1034 for 1601 observed reflections with I > 2σ(I). Structure analysis showed that the lead atom presents an unusual four- coordination geometry with a large vacancy, possibly indicating the stereochemical activity of 6s2 lone pair electrons.
