The crystal structure of calcium succinate monohydrate
The crystal structure of calcium succinate monohydrate, Ca(C4H4O4)H2O, has been determined by single crystal X-ray diffraction. The crystals are monoclinic witha=11.952(2),b=9.691(2),c=11.606(2), =108.81(1), space group C2/c,Z=8,V=1272.49 3,d m =1.80, andd c =1.818 Mg m–3. The structure was refined by full-matrix least-squares techniques toR=0.027,R w =0.040, for 829 reflections with13(I). Ca is coordinated to seven oxygen atoms, and the coordination polyhedron is best described as a pentagonal bipyramid. One carboxylate group in the succinate ion is bonded to three different Ca ions, forming a four-membered chelate ring with one Ca ion is bonded to three different Ca ions, forming a four-membered chelate ring with one Ca ion and unidentate bridge bonds to two other Ca ions. The other carboxylate group is bonded to two Ca ions through unidentate bonds. The structure is highly polymeric. The general structural features are nearly identical to those of calcium adipate monohydrate.