Molecular Structure of the Copper(II) Complex of 20-Methoxy-mesoporphyrin IX Dimethyl Ester - A Model for the Enol-Form of Oxophlorins
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چکیده
The crystal structure o f the title com pound was determ ined to obtain structural inform ation on asym metric tetrapyrroles bearing an sp3-hybridized meso-oxygen atom . These types o f com pounds serve as models for the enol-form o f oxophlorins, which often are obtained in crystalline form only w ith ro tational disordering o f the oxofunction, m aking conform ational analyses difficult. C37H 4-,CuN40 5, m onoclinic, P 2 ,/«, a = 15.025(7), b = 9.204(3), c = 23.544(9) k , ß = 94.33(4)°, V = 3246.7(13) Ä 3, 130 K, Z = 4, R = 0.075 for 3186 reflections with I > 2 .0ct(I). The structure is characterized by a p lanar te tracoordinated copper(II) and an alm ost p lanar macrocycle.
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تاریخ انتشار 2013