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Copper(I) Arenethiolates with Intramolecular Coordination and the Formation of Mixed Organo(arenethiolato)copper(I) Aggregates. X-ray Structures of Trimeric [Cu(SC6H4NMe2
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Two new copper(I) arenethiolates withortho-chelating nitrogen donor atoms[Cu(SC6H4NMe2-2)]3(5) and [Cu(S-1-C10H6NMe2-8)]9(6) have been synthesized by reactingMe3SiSAr (Ar =C6H4NMe2-2 or1-C10H6NMe2-8)with copper(I) chloride in a 1:1 molar ratio. Copper(I)arenethiolate 5 is a white to pale yellow solid andistrimeric in the solid state as well as in solution. Crystals of[Cu(SC6H4NMe2-2)]3(5),C24H30Cu3N3S3,are trigonal,space group R3, with a = b =18.2325(7) Å, c = 6.8410(4) Å, V= 1969.4(2) Å3, Z = 3, and finalR = 0.028for 1010 reflections with I 2.5(I) and107 variables. Copper(I) arenethiolate 6 formsdark red crystals and isnonameric in the solid state as well as in solution. Crystals of{[Cu(S-1-C10H6NMe2-8)]9}2{C6H6}10.5(6), C279H279Cu18N18S18, are triclinic, spacegroup P, with a = 16.081(2) Å,b = 26.650(4) Å, c = 32.747(6) Å, =67.320(13), = 76.180(12), = 81.226(12),V = 12545(4) Å3, Z = 2, andfinal R = 0.118 for 28749 reflectionsand 1501 variables. Reaction of nonameric 6 with(3,3-dimethylbutynyl)copper results in the formation ofthe2:1 mixed dimeric hexanuclear organo(arenethiolato)copperaggregate[Cu3(S-1-C10H6NMe2-8)2(CCtBu)]2(9),C60H66Cu6N4S4,which has been isolated as an air-stable orange solid which isinsoluble in most common organicsolvents. Crystals of 9 are monoclinic, space groupP21/c, with a = 11.9839(5) Å,b = 12.9391(8) Å, c =18.9482(7) Å, = 108.326(3), V =2789.1(2) Å3, Z = 2, and finalR = 0.0314 for 5110 reflections with I2.5(I) and 358 variables. Reaction of6 with mesitylcopper,[Cu5(C6H2Me3-2,4,6)5],results in the formation ofthe 1:1 mixed organo(arenethiolato)copper aggregate[Cu2(S-1-C10H6NMe2-8)(C6H2Me3-2,4,6)]n(10), which is ayellowish-brown, slightly air-sensitive solid that is soluble in polarand aromatic hydrocarbons. The new mixedaggregates 9 and 10 are thermodynamically andkinetically very stable, and it is found that the overallstructureof mixed organo(arenethiolato)copper aggregates such as9 is insensitive to structural changes in thearenethiolateligand.

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