Cyclic Organolead Compounds

lO-Dihydro-9,10-anthranyl)lead PbC2sH2o Synth. By rxn. of 9,10-Na2Ci4Hj.o in THF in inert atm. (1726). 

1- Ethylacetato-l-Plumbacyclopentane PbCeHie02 Synth. By rxn. of iH2(CH2)3 bEt2 with AcOH in Et20 in N atm., in 88% yield (1260). 

t By rxn. of Ph2PbCl2 with (2-lithium-ii-, 5-methylenedioxyphenyl)2 in Et20-C6He in inert atm., in 8% yield (93 )  

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Examples of supramolecular association as a result of intermolecular organolead-sulphur interactions are rare and compounds such as Me3PbSMe and Pl PbSPh are monomeric in the solid state463. In contrast, triphenyllead pyridine-4-thiolate, d-Pl PbSCsFLjN464, is a chain polymer as a result of intermolecular N—Pb interactions. The cyclic dithiolate 2,2-diphenyl-l,3,2-dithiaplumbolane 177465 self-assembles in the solid state via intermolecular tin-sulphur interactions into a one-dimensional polymeric array. The intramolecular Pb—S bond lengths amount to 2.52(2) and 2.49(1) A and the intermolecular Pb—S distances are 3.55(2) A. 

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