Ci8Hi8.50AgFN4O7.25, monoclinic, C12/cl (no. 15), a = 23.65(1) A, b = 5.524(2) A, c = 31.13(1) A, P = 98.564(7)°, V = 4022.4 A 3 , Z = 8, R gl (F) = 0.056, wRniF 2 -) = 0.170, T= 298 K. Source of materialAll reagents and solvents were used as purchased without further purification. C, H and N elemental analyses were performed on a Perkin-Elmer elemental analyzer. Equimolar 2-fluorobenzaldehyde (1 mmol, 124 mg) and 2-hydroxyaminoethylamine (1 mmol, 104 mg) were dissolved in ethanol solution (5 ml) with stirring. After 30 min, a suspension solution of Ag20 (166 mg, 0.5 mmol) and 3,5-dinitrobenzoic acid (212 mg, 1 mmol) in acetonitrile (10 ml) were added to the above solution. The resultant solution was kept to evaporate slowly in air. After about half of the solvent had evaporated, large colorless slab crystals of the title compound were deposited and were collected by filtration (yield 61 %). Elemental analysis: found -C,40.10%;H, 3.55 %;N, 10.26 %;calc. forCi8Hi8.5AgFN4O7.25-C, 40.51 %; H, 3.49 %; N, 10.50 %. Experimental detailsAll atoms were fixed geometrically and restrained to ride on their parent atoms. They were treated as riding atoms, with [/¡¡»(H) = 1.2U e q(C, N) and i/i S0 (H) = 1.5t/eq(0), respectively. The disordered water 08 and O8A positions are disordered and half occupied. This is coupled with the orientational disorder of the ethoxy group. All disordered atoms were refined using restrained bond distances and angles. Only uniform isotropic displacement parameters could be assigned to the respective non-hydrogen atoms.In the last refinement cycles the s.o.f. s of the disordered ethoxy atoms were fixed to 0.5 due to their ranging between 0.45 and 0.63 in previous refinement stages. The crystals turn to fragile even to powder (decomposes) at a temperature below 120 K, thus a data collection at low temperature was not possible. At the present condition, the U values of a few atoms are reasonably large. DiscussionRecently we prepared some new Schiff bases using N-2-hydroxyethyl-l,2-ethylenediamine and aldehydes, and some new transition metal complexes [1][2][3][4][5] with Schiff bases. In this paper we reported the crystal structure of a silver® complex with a new Schiff base ligand, A^-(2-(2-hydroxyethylamino)ethyl)-2-fluorobenzaldimine (L). The crystal structure of the title compound consists of a neutral mononuclear silver(I) complex and lattice water molecules. The 08 and 08 A atoms of the lattice water locate in special positions. In the complex, the central silver(I) complex is three-coordinated by two nitrogen atoms from a Schiff base ligand, and by one oxygen atom from a 3,5-dinitrobenzoate anion. The 3,5-dinitrobenzoate acts as a monodentate ligand. The Ag-O bond length is 2.157(4) A, being significantly shorter than that of 2.483(3) A in other silver(I) complexes with 3,5-dinitrobenzoate [6], but being in the range of normal Ag-O contacts. The Ag-Nimine bond length (2.574(5) A) is much longer than the Ag-Namine bond length (2.229(5) A), which is unusual. This is presumably caused by...