Layered structure of the silver coordination polymer with nonrigid aromatic diamine {Ag[CH2(C6H4NH2)2]2(CH3C6H4NH2)}NO3 |
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Authors: | Yu V Kokunov V V Kovalev and Yu E Gorbunova |
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Institution: | (1) Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 117907, Russia |
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Abstract: | The complex Ag(DDM)2(CH3C6H4NH2)]NO3, where DDM is 4,4-diaminodiphenylmethane CH2(C6H4NH2)2], was synthesized and its structure was determined. The crystals are monoclinic, space group P21/n, a = 9.543(2) ?, b = 18.056(4) ?, c = 1.901(2) ?, β = 106.94(3)°, V = 1796.8(6) ?3, ρcalcd = 1.443 g/cm3, Z = 4. The Ag atom (at the inversion center) is coordinated at the vertices of an almost undistorted octahedron by six nitrogen
atoms of the primary amino groups from four bridging DDM molecules and two terminal p-toluidine molecules (Ag-N, 2.546(3) ?; NAgN, 89.7–90.3°). Wavelike layers composed of conjugate multiunit metal rings, each
containing four Ag+ ions and four bridging DDM ligands, are formed in the structure in the 101] direction (a 2D polymer). Uncoordinated NO
3
−
anions are arranged in the cavities between the layers and link them by N-H⋯O hydrogen bonds.
Original Russian Text ? Yu.V. Kokunov, V.V. Kovalev, Yu.E. Gorbunova, 2007, published in Zhurnal Neorganicheskoi Khimii, 2007,
Vol. 52, No. 12, pp. 1992–1998. |
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