摘要:
Single crystals of diisopropylammonium dicitratoborate of the formula (C(3)H(7))(2)NH(2)[(C(6)H(6)O(7))(2)B] (I) were prepared and characterized by X-ray diffraction. The crystals are monoclinic, space group C2/c, a = 15.9978(5) , b = 11.0805(4) , c = 13.1872(4) , alpha = 90A degrees, beta = 103.34(1)A degrees, gamma = 90A degrees, Z = 8, V = 2274.5 (1) (3), Z = 8, rho(calc) = 1.440 g/cm(3), 2237 reflections with I > 2 sigma(I); R1 = 0.0408. Structure I is built from complex spiran-type dicitratoborate anions and diisopropylammonium cations. In the crystal packing, the anions and the cations form staggered stacks linked by a system of hydrogen bonds involving three independent contacts O(N)-H...O. X-ray diffraction data for structure I were compared with those for complexes of boric and citric acids with ammonium and alkylammonium cations.