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The title compound, C14H10Cl4, possesses Ci symmetry and crystallizes with one half-molecule in the asymmetric unit. The two phen­yl rings are antiperiplanar and inclined to one another by 180° by symmetry. The central C—C bond distance and the Cl—C—Cl bond angle [1.5887 (18) Å and 106.02 (7)°, respectively] are significantly different from ideal sp3 values. In the crystal, a supramolecular structure is achieved by soft parallel-displaced π–π stacking and C—H...π inter­molecular inter­actions.

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In the crystal structure of the title compound, [Fe2(C12H10P)2(CO)6]·CH2Cl2, the complex mol­ecule lies across a mirror plane. Two diphosphide ligands bridge two (CO)3Fe fragments to form a dinuclear complex, in which the Fe—Fe distance is 2.6701 (6) Å. Two aromatic rings within the same molecule inter­act by face-to-face π–π stacking, with a centroid-to-centroid distance of 3.601 (2) Å.

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The title compound, C14H22N2O6, possesses Ci symmetry and crystallizes with one half-mol­ecule in the aymmetric unit. The structure can be described as cyclo­hexyl­diamide singly bonded to two ethyl carboxyl­ate groups. The supramolecular structure is achieved through inter­molecular hard N—H...O hydrogen-bonding inter­actions involving only the amide group. The full hydrogen-bonding network is described by the C22(8)[S(5)S(5)C(4)] motif that develops along the c-axis direction.
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