Chlorotris(2,4,6‐trimethylphenyl)tin(IV) and its ethanol hemisolvate |
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Authors: | Jordan Geller Ivor Wharf Francine Blanger‐Garipy Anne‐Marie Lebuis Ian S Butler Denis F R Gilson |
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Institution: | Jordan Geller,Ivor Wharf,Francine Bélanger‐Gariépy,Anne‐Marie Lebuis,Ian S. Butler,Denis F. R. Gilson |
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Abstract: | Chlorotris(2,4,6‐trimethylphenyl)tin(IV), crystallizes from ethanol as solvent‐free needles, Sn(C9H11)3Cl], (I), and as the hemisolvate, Sn(C9H11)3Cl]·0.5C2H6O, (II). The asymmetric unit in (I) has three independent molecules, whereas in (II), there are two Sn(C9H11)3Cl] molecules together with one ethanol molecule. In the unit cell of (II), the ethanol molecules lie in channels between stacks of (Mes)3SnCl molecules (Mes is 2,4,6‐trimethylphenyl) and each ethanol molecule is disordered (0.50:0.50) over two positions. A comparison of the structures of the title compounds and other (Mes)3SnX (X = F, Br or I) systems with those of the triphenyltin analogues shows that the steric requirements of the o‐CH3 groups are met by a flattening of the SnC3 skeleton and increases in the average Sn—X and Sn—C values. Comparing Sn—X data for (Mes)3SnX (X = F, Cl, Br or I) systems with values for the tris(o‐methoxyphenyl)tin analogues suggests that the Sn—F distance of 1.961 Å in (Mes)3SnF may well be characteristic of sterically unhindered four‐coordinate Ar3SnF systems. |
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