Co(ii) coordination polymers supported by a benzenetetracarboxylate and bis-pyridyl-bis-amides with different flexibilities

Abstract

Hydrothermal reactions of Co(CH3COO)2·4H2O and 1,2,4,5-bezenetetracarboxylic acid (1,2,4,5-H4BTEC) with N‚N'-bis(3-methylpyridyl)oxalamide (L1), N‚N'-bis(3-methylpyridyl)adipoamide (L2) and N‚N'-bis(3-methylpyridyl)sebacoamide (L3) afforded [Co(L1)0.5(1,2,4,5-BTEC)0.5(H2O)]n, 1, {[Co(L1)(1,2,4,5-BTEC)0.5(H2O)]·H2O}n, 2, {[Co(L1)1.5(1,2,4,5-BTEC)0.5(H2O)]·3H2O}n, 3, [Co(L2)(1,2,4,5-BTEC)0.5(H2O)2]n, 4, [Co3(L3)(1,2,4,5-BTEC)1.5(μ2-OH2)2]n, 5, which have been...

Cu(Ⅱ) Coordination Polymers Containing Mixed Ligands with Different Flexibility: Structural Diversity and Iodine Adsorption

“…The reagent Cu(CH3COO)2•H2O was purchased from Showa, 1,3,5-benzenetricarboxylic acid (1,3,5-H3BTC) from Alfa Aesar and 1,3,5-tri(4-carboxyphenyl)benzene (1,3,5-H3BTB) from Alfa Aesar. The ligands N‚N'-bis(3-methylpyridyl)oxalamide (L 1 ), N‚N'-bis(3-methylpyridyl)adipoamide (L 2 ) and N‚N'-bis(3-methylpyridyl)sebacoamide (L 3 ) were prepared according to published procedures [23][24][25].…”

Cd(ii) coordination polymers constructed from tris-pyridyl-tris-amide and polycarboxylic acid: synthesis, structures and sensing properties

“…While interesting luminescence properties have been shown for [CuI( L )] n , 11 the complex [Ag( L )N 3 ] n displays an intriguing two-fold interpenetrated 3D structure with interlocked cage-like moieties. 12 The pyridyl nitrogen atoms of L usually show better coordination ability than the amide oxygen atoms and the amide oxygen atoms may provide opportunity for metal sensing through the CO⋯M n + interaction.…”

“…11 The chemistry of bis-pyridyl-bis-amide (bpba) based CPs has been investigated extensively and interesting structural types thus prepared have been identified. 12,13 The bpba ligands bear pairs of pyridyl nitrogen atoms and amide oxygen atoms that may coordinate with the transition metal atoms to form CPs with different dimensionality, whereas the two amide groups play important roles as abundant potential hydrogen bond sites. 14 Extension of the bpba to tripodal ligands with the C 3 symmetry containing three amide groups and three pyridyl rings (tris-pyridyl-tris-amide, tpta) may result in CPs with different structural diversity.…”

Trans-Catena-Poly[[(Bis-(μ-N,N’-Bis[(Pyridin-3-yl)Methyl]Ethanediamide))-Diaqua-Cadmium(II)] Bis(Nitrate) Tetrahydrate)]

“…Oxalyl diamides (oxalamides), i.e., oxalic acid diamides, have been widely employed in synthetic organic chemistry [7,8] and coordination chemistry [9,10]. In particular, N,N'-bis(pyridin-3-ylmethyl)oxalamide (L) was isolated in two polymorphs [11], as a hydrate [12], and it was structurally characterized in about fifteen different cocrystals and about thirty coordination compounds, where the pyridine N-atoms were directly involved in the coordination of transition metal ions as varied as Cu II [13], Zn II [14], Ni II [15], Ag I [16], Au I [17], Co II [18,19], and Pd II [20]. In addition, four Cd II complexes bearing the L oxalamide ligand in combination with carboxylate and dithiophosphato ancillary ligands have been reported to date [18,21].…”