Self-assembled Transition Metal Coordination Frameworks of ...

Chapter 4 _, W
washed with methanol and ether and dried in vacuo over P40“, Yield: 0.286 g
(93.4%). Elemental Anal. Found (Calc.): C, 45.48 (45.10); H, 3.78 (3.21); N, 18.28
(18.29); S, 5.35 (5.24)%.
[Cu4L22)- 21120] (C104). (9)
A solution of CuCl04- 6H;0 (0.378 g, 1 mmol) in 10 ml of methanol was
added to a solution of H2L2 (0.220 g, 0.5 mmol) in 10 ml chloroform and refluxed for
‘/2 h and allowed to stand at room temperature. Brown product separated out was
filtered, washed with methanol followed by ether and dried over P4010 in vacuo.
Yield: 0.326 g (83.7%). Elemental Anal. Found (Calc.): C, 38.38 (38.57); H, 2.92
(2.59); N, 10.45 (10.79); S, 4.16 (4.l2)%. Molar conductivity (AM, 104 M DMF): 5
Q" cmz mol".
[Cu;(HL2)Br;]Br- H20 (10)
A solution of CuBr2 (0.226 g, 1 mmol) in 10 ml of methanol was added to a
solution of H21] (0.220 g, 0.5 mmol) in 10 ml chloroform and refluxed for I/2 h and
allowed to stand at room temperature. Brown product separated out was filtered,
washed with methanol followed by ether and dried over P4010 in vacuo. Yield: 0.313
g (76.3%). Elemental Anal. Found (Calc.): C, 36.00 (36.60); H, 2.14 (2.58); N, 9.96
(10.24); s, 3.66 (3.91)%. Molar conductivity (AM, 10*‘ M DMF): ss Q" cmz mar‘.
[Cu;(HL3) cz_.]~ 21120 (11)
A solution of CuCl;- 2H20 (0.265 g, 1.5 mmol) in 10 ml of methanol was
added to a solution of HZL3 (0.291 g, 0.75 mmol) in 40 ml boiling methanol and
refluxed for 10 minutes and the reddish solution allowed to stand at room temperature.
Brown product separated out was filtered, washed with methanol followed by ether
and dried over P40“, in vacuo. Yield: 0.435 g (88.8%). Elemental Anal. Found
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