Notes and references
{ Crystals of 3 were grown from a solution containing MeOH and NaCl.
Crystal data: C20H24Cl2CuN4O6, M = 550.87, orthorhombic, space group
˚
P212121 (no. 19), a = 6.6563(11), b = 16.198(3), c = 20.176(3) A, U =
2175.4(6) A , T = 90(2) K, Z = 4, m(Mo-Ka) = 1.3 mm21, 28893 reflections
3
˚
measured, 6365 unique (Rint = 0.047) which were used in all calculations.
The Flack parameter refined to 20.026(11). The final wR(F2) was 0.089 (all
data). CCDC 640795. For crystallographic data in CIF or other electronic
format see DOI: 10.1039/b703835f
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´
We wish to thank the NIH [GM53788 (O. E.), CA98878
(J. P. K.), and GM58903 (MBRS fellowship to Y. R. L.)] for
generous support of this work. Purchase of the 600 MHz NMR
used in these studies was supported by funds from the National
Institutes of Health (S10RR019918) and National Science
Foundation (CHE-0342912).
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3254 | Chem. Commun., 2007, 3252–3254
This journal is ß The Royal Society of Chemistry 2007