A hydrogen-bridged adduct 3,4,6,7,8,9-hexahydro-2H-pyrimido[1,2-a]pyrimidin-1-ium [1,3-bis(tert-butyldimethylsilyloxy)-1,3-bis(pyridin-2-yl)propan-2-ylidene]nitronate acetonitrile monosolvate
نویسندگان
چکیده
The title compound, C(7)H(14)N(3) (+)·C(25)H(40)N(3)O(4)Si(2) (-)·CH(3)CN, was obtained by the reaction of 2-nitro-1,3-di(pyridin-2-yl)-1,3-di(tert-butyl-dimethyl-sil-yloxy)propane with 1,3,4,6,7,8-hexa-hydro-2H-pyrimido[1,2-a]pyrimidine. Two hydrogen bonds stabilize the Lewis acid/base pair of the nitro-nate and the guanidinium moiety with N⋯O distances of 2.772 (3) and 2.732 (3) Å. Both hydrogen atoms are more closely bound to the guanidinium [N-H distances of 0.83 (3) and 0.93 (3) Å] than to the nitro-nate moiety. The nitro-nate is double-bonded to the respective carbon with an N=C bond length of 1.316 (3) Å.
منابع مشابه
Crystal structure of bis(1,3-bis{[(1H-pyrrol-2-yl)methylidene]amino-κN}propan-2-olato-κO)manganese(III) nitrate methanol monosolvate
The asymmetric unit of the title compound, [Mn(C13H15N4O)2]NO3·CH3OH, contains two independent complex cations, in each of which the Mn(III) ion is located on an inversion centre. The Mn(III) ion is coordinated by four N and two O atoms from two 1,3-bis-{[(1H-pyrrol-2-yl)methyl-idene]amino}-propan-2-olate ligands, resulting in a distorted octa-hedral geometry. The average Mn-ligand bond lengths...
متن کاملSulfonated 1,3-bis(4-pyridyl)propane
In the title compound, 4-[3-(3-sulfonato-pyridin-1-ium-4-yl)prop-yl]pyridin-1-ium-3-sulfonate, C(13)H(14)N(2)O(6)S(2), the mol-ecule is zwitterionic, with the sulfonic acid proton transfered to the basic pyridine N atom. Also, the structure adopts a butterfly-like conformation with the sulfonate groups on opposite sides of the 'wings'. The dihedral angle between the two pyridinium rings is 83.5...
متن کامل[μ-3,3′-Diisopropyl-1,1′-(propane-1,3-diyl)bis(1,3-diazinan-2-ylidene)]bis[bromido(η4-cycloocta-1,5-diene)rhodium(I)]
The title compound, [Rh2Br2(C8H12)2(C17H32N4)], was obtained by the reaction of 3,3'-(propane-1,3-di-yl)bis-(1-isopropyl-3,4,5,6-tetra-hydro-pyrimidin-1-ium) bromide and [{Rh(cod)Cl}2] (cod is cyclo-octa-1,5-diene) in tetra-hydro-furan. The two Rh(I) atoms each have a distorted square-planar coordination environment, defined by a bidentate cod ligand, a bromide anion and one C atom of the bridg...
متن کاملcis-Triaqua[1,1′-(propane-1,3-diyl)bis(pyridin-1-ium-4-carboxylato)-κO]bis(thiocyanato-κN)manganese(II) dihydrate
In the title compound, [Mn(NCS)2(C15H14N2O4)(H2O)3]·2H2O, the metal ion is octa-hedrally coordinated by three water mol-ecules, one carboxyl-ate O atom from a 1,1'-(propane-1,3-di-yl)bis-(pyridinium-4-carboxyl-ate) ligand and two N atoms from two thio-cyanate anions in cis positions, forming a mononuclear complex mol-ecule. In the crystal, mol-ecules are connected into a three-dimensional archi...
متن کاملcatena-Poly[[bis(methanol-κO)bis(thiocyanato-κN)cobalt(II)]-μ-1,3-bis(pyridin-4-yl)propane-κ2 N,N′]
The asymmetric unit of the title compound, [Co(NCS)(2)(C(13)H(14)N(2))(CH(3)OH)(2)], consists of one cobalt(II) cation located on a center of inversion, one half of a 1,3-bis-(pyridin-4-yl)propane ligand located on a twofold rotation axis, as well as one thio-cyanate anion and one methanol mol-ecule in general positions. The cobalt(II) cation is coordinated by two terminal N-bonded thio-cyanate...
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عنوان ژورنال:
دوره 67 شماره
صفحات -
تاریخ انتشار 2011