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Figure 8.
FIG. 8. Difference Fourier maps with coefficients iF,(deri)/ - lF,(deoxy)l, c,(deoxy), where
PJderi) are the observed structure factors of the ligation form aquomet, cerbonmonoxy, and
cyaomet, respectively. The oc,(deoxy) are the calcuated phases of the refined deoxy model.
Composite drawing of several sections projected parallel to the haem plane, represented by
the heevy line. The vinyl-substit)uted pyrrole residues are pointing awa from the observer. The
distal ide is on the left, the proximal on the right. Positive density is dran with solid lies,
negative with broken lines. Contour lines beginning at 0.16 eAms with a separation of 0.08 eA-3.
(a) Coefficients lE'',(aquomet) 1 - lF,(deoxy) 1, a,(deoxy).
(b) Coefficients lP,(crtrbonmonoxy) 1 - IP,(deoxy) 1, cc,(deoxy).
(0) Coefficients IF, (oyanomet) 1 - lF,(deoxy) /, cr,(deoxy).
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