The Crystallographic Data

Table XXI shows the crystallographic data as far as they are known. The structures of the three sulfide iodides have been determined by single-crystal studies. Powder patterns of the 8n(IV) compounds not given here have been reported elsewhere (24).

The crystallographic data are summarized in Table XXVIII. The best known structure is that of the compounds belonging to the so-called SbSI type (see Table XXVIII), which was proposed by Donges 106,107), and confirmed for SbSBr 84), SbSI 153,174,184,258), and BiSI 153). 

Tables III and IV, respectively. Overall, the crystallographic data indicate Fe-Fe distances ranging from 2.53 to 2.79 A (average =...

To satisfy our curiosity over the packing schemes and to verify the dihydro PbTX-1 structure assignment, we decided to measure a complete set of data. Data for the alcohol were measured at room temperature with Cu Ka x-rays to a maximum 20 value of 114, monitoring for possible decomposition every fifty reflections. No significant decomposition was observed. The crystallographic data are given in Table III. 

Fig.8 The molecular structure of Cp2Zr(Me)0B[0Si(0 Bu)3]2 generated from the crystallographic data of 1 of the 18 independent molecules from the asymmetric unit, with all hydrogen atoms omitted for clarity...

The crystallographic data for the two packings of spheres are summarized in Table 17.1. 

The X-ray powder diffraction pattern of (o)-penicillamine was obtained using a Siemens XRD-5000 diffractometer, and the powder pattern is shown in Fig. 1. A summary of the crystallographic data deduced from the pattern of (r>)-penicilla-mine is located in Table 1. 

Analogous to the DuP 747 study, complete crystallographic information was not possible on the fosinopril sodium polymorphic system [25], Two known polymorphs (A and B) were studied via a multidisciplinary approach (XRD, IR, NMR, and thermal analysis). Complementary spectral data from IR and solid state 13C NMR revealed that the environment of the acetal sidechain of fosinopril sodium differed in the two forms. In addition, possible cis-trans isomerization about the CgN peptide bond may exist. These conformational differences are postulated as the origin of the observed polymorphism in fosinopril sodium in the absence of the crystallographic data for form B (single crystals not available). 

Although tri- and tetrametaphosphimates have been studied extensively, only a few single-crystal structure analyses had been conducted until recently. Tables III and IV, respectively, give a summary of the crystallographic data of all hitherto known structures. 

Table V gives a summary of the crystallographic data of all hitherto known structures of trimetaphosphimatometallates. 

Probucol (4,4/-[(l-methylethylidene)bis(thio)]-bis-[2,6-bis(l,l-dime-thylethyl)phenol]) is a cholesterol-lowering drug that has been reported to exist in two forms [27]. Form II has been found to exhibit a lower melting point onset relative to Form I, and samples of Form II spontaneously transform to Form I upon long-term storage. The structures of these two polymorphic forms have been reported, and a summary of the crystallographic data obtained in this work is provided in... 

The optimum value of the ratio ea(eq)/ea(ax) was 0.8, consistent with the crystallographic data. 

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