Synthesis and structure of [Ca(triethyleneglycol)2](NO3)2·H2O

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Crystallization of calcium nitrate from a toluene solution of triethyleneglycol (= 2,2′-[1,2-ethanediylbis(oxy)]-bisethanol) resulted in the formation of the 1:2 solvate [Ca(triethyleneglycol)2](NO3)2·H2O. [Ca(C6H14O4)2](NO3)2·H2O is monoclinic, P21/c, a = 15.775(1), b = 8.660(2), c = 16.342(1) Å, β = 91.239(7)°, V = 2232.1(6) Å3, Z = 4, and Dc = 1.429 g cm−3. The eight-coordinate calcium has square antiprismatic geometry with two triethyleneglycol molecules straddling the metal center. The nitrate anions and water of crystallization are involved in hydrogen bonding with the alcoholic hydrogen atoms.

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