In the title compound, [Cu(NO(3))(2)(C(14)H(36)N(6))](NO(3))(2)·4H(2)O, the Cu(II) atom, lying on an inversion center, is six-coordinated in a distorted octa-hedral environment by four N atoms from a centrosymmetric 14-membered tetra-aza-cyclo-tetra-decane macrocyclic ligand and two O atoms from two nitrate anions. The supra-molecular network is consolidated by extensive O-H⋯O and N-H⋯O hydroge...

In the title compound, [Zn(C(18)H(39)N(3)O(3))](NO(3))(2)·H(2)O, the coordination geometry around the central Zn(II) atom is distorted octa-hedral. The hydroxyl groups in the macrocyclic ligand and water mol-ecules are engaged in O-H⋯O hydrogen bonding, which forms two-dimensional corrugated sheets comprising 34-membered rings. Neighbouring sheets are connected by C-H⋯O inter-actions.

In the centrosymmetric title compound, [Ni(N(3))(2)(C(22)H(34)N(6))], the Ni(II) ion is coordinated by the four secondary N atoms of the macrocyclic ligand in a square-planar fashion with two N atoms of the azide ions in axial positions, resulting in a tetra-gonally distorted octa-hedron. An N-H⋯N hydrogen-bonding inter-action between the secondary amine N atom of the macrocycle and an adjacent...

The structure of the title compound, [Cu(ClO4)2(C16H38N6)] has been determined from synchrotron data, λ = 0.62988 Å. The asymmetric unit comprises one half of the Cu(II) complex as the Cu(II) cation lies on an inversion center. It is coordinated by the four secondary N atoms of the macrocyclic ligand and the mutually trans O atoms of the two perchlorate ions in a tetra-gonally distorted octa-he...

The title compound, [Ni(NCS)(2)(C(24)H(38)N(6))], is a thio-cyanate-coordinated aza-macrocyclic nickel(II) complex. There are two independent mol-ecules in the asymmetric unit and their bond lengths and angles are similar. Both Ni atoms have a tetra-gonally distorted octa-hedral geometry, in which the Ni(II) ion is coordinated by the four secondary N atoms of the aza-macrocyclic ligand and by t...

In the presence of K(2)CO(3) in refluxing THF, dichloro-substituted tetraoxacalix[2]arene[2]triazine, a readily available macrocyclic compound from cyanuric acid chloride and benzyl 1,3-dihydroxybenzoate, underwent highly efficient nucleophilic displacement reactions with bis-nucleophilic reagents of different geometry, length and chirality in a 2+2 fashion to produce large and size-tunable cav...

The precise analysis of redox chemistry of MN4-based macrocyclic complexes is of great importance because of stabilization of unusual oxidation states of metal ions by macrocyclic ligand and thus have various applications in biochemistry, electrochemistry, electrocatalysis, pharmaceuticals etc. In this work, MN4-macrocyclic complexes of Co (II) and Ni(II) transition metal ...

The title compound, C(6)H(16)N(3) (+)·Br(-), is the bromide of the monoprotonated aza-macrocyclic triamine 1,4,7-triaza-cyclo-nonane (tacn). The threefold axis of the triamine is broken by the protonation of one of the three amine functions. The ammonium proton is bonded in an intra-molecular symmetrically bifurcated hydrogen bond to the two endodentate amine functions. Direct cation-anion cont...

The reaction of tetrakis[bis(trimethylsilyl)methyl]digallane(4), 1, with 1,1′-ferrocenedicarboxylic acid afforded orange-red crystals of the macrocyclic compound 2 in a yield of 84%. 2 contains a large 32-atom heterocycle, which comprises four Ga-Ga single bonds bridged by four 1,1′-ferrocenedicarboxylato ligands. The largest diameter of the molecule is about 2.5 nm. The redox-active Ga-Ga site...

The title compound, C(84)H(112)O(36), has a macrocyclic structure. It has 12 (meth-oxy-carbon-yl)meth-oxy 'head groups' in the upper rim and exhibits a flattened boat geometry. Intra-molecular C-H⋯O hydrogen bonds occur. In the crystal, inter-molecular C-H⋯O contacts occur. The 'head groups' and the pentyl 'feet' contain disordered (0.5:0.5 occupancy ratio) atoms.