(2-Carb­oxy­acetato-κ2 O 1,O 1′)(rac-5,5,7,12,12,14-hexa­methyl-1,4,8,11-tetra­aza­cyclo­tetra­decane-κ4 N,N′,N′′,N′′′)nickel(II) perchlorate acetonitrile solvate

In the crystal structure of the title salt, [Ni(C3H3O4)(C16H36N4)]ClO4·CH3CN, the macrocycle folds around the NiII atom, which is also chelated by the carboxyl­ate monoanion. The geometry is a distorted NiN4O2 octa­hedron. The formula units are connected by N—H⋯O hydrogen bonds into centrosymmetric dimers. Further N—H⋯O and O—H⋯O hydrogen bonds link the complex mol­ecules and the perchlorate ions

(2-Amino­benzoato-κ2 O,O′)(rac-5,5,7,12,12,14-hexa­methyl-1,4,8,11-tetra­aza­cyclo­tetra­decane-κ4 N,N′,N′′,N′′′)nickel(II) perchlorate monohydrate

In the title salt, [Ni(C7H6NO2)(C16H36N4)]ClO4·H2O, the NiII cation is O,O′-chelated by the benzoate anion and N,N′,N′′,N′′′-chelated by the macrocycle ligand, confering a distorted octa­hedral geometry on the metal atom. The complex cations, perchlorate anions and uncoordinated water mol­ecules are linked by N—H⋯O and O—H⋯O hydrogen bonds into a three-dimensional network. The perchlorate ion is disordered over two positions in a 0.554 (8):0.446 (8) ratio

Bis(5,5,7,12,12,14-hexa­methyl-1,4,8,11-tetra­azacyclo­tetra­decane-κ4 N)(μ-l-mal­ato-κ4 O 1,O 2:O 4,O 4′)dinickel(II) bis(perchlorate) monohydrate

In the crystal structure of the title dinuclear compound, [Ni2(C4H4O5)(C16H36N4)2](ClO4)2·H2O, the bridg­ing di­car­box­yl­ate dianion O,O′-chelates to two Ni atoms, both of which are also chelated by the N-macrocylic ligand. The Ni atoms exhibit a distorted octa­hedral coordination. N—H⋯O and O—H⋯O hydrogen bonds link the cations and the uncoordinated water mol­ecules into a layer structure; the perchlorate anions occupy the space between adjacent layers, and are only weakly linked to the layers. One of the perchlorate anions is disordered over two sets of sites in a 3:2 ratio

[4-Carboxy­imidazole-5-carboxyl­ato(2–)-κ2 N 1,O 5](5,5,7,12,12,14-hexa­methyl-1,4,8,11-tetra­azacyclo­tetra­decane-κ4 N,N′,N′′,N′′′)nickel(II) monohydrate

The 4-carboxy­imidazole-5-carboxyl­ate(2−) dianion in the title compound, [Ni(C5H2N2O4)(C16H36N4)]·H2O, N,O′-chelates to the NiII atom, which shows an octa­hedral coordination. The macrocycle folds itself around the metal atom and binds to it through four secondary nitrogen atoms; adjacent molecules are linked by N—H⋯O hydrogen bonds into a linear chain. The water molecule is disordered over two positions

(Benzoato-κ2 O,O′)(5,5,7,12,12,14-hexa­methyl-1,4,8,11-tetra­azacyclo­tetra­decane-κ4 N,N′,N′′,N′′′)nickel(II) perchlorate monohydrate

The Ni atom in the title salt, [Ni(C7H5O2)(C16H36N4)]ClO4·H2O, is in a six-coordinate octa­hedral geometry. The metal atom is chelated by the carboxyl­ate group, and the macrocyclic ligand adopts a folded configuration. The cation, anion and water mol­ecules engage in hydrogen bonding to form a layer structure

Di-μ-acetato-1:2κ2 O:O′;2:3κ3 O:O,O′-bis­(5,5,7,12,12,14-hexa­methyl-1,4,8,11-tetra­aza­cyclo­tetra­deca­ne)-1κ4 N,3κ4 N-bis­(perchlorato-2κ2 O,O′)-2-sodium-1,3-dizinc perchlorate

In the title salt, [NaZn2(CH3COO)2(ClO4)2(C16H36N4)2]ClO4, the macrocyclic ligand binds to the Zn2+ cations through their four amino N atoms; the Zn2+ cations are also each covalently bonded to an acetate ion. For one zinc atom, the acetate group is monodentate, and the geometry is a distorted ZnN4O trigonal bipyramid; for the other, the acetate group is anisobidentate and the geometry is a distorted ZnN4O2 octa­hedron. The two macrocycle–zinc acetate units are bridged through a diperchloratosodium unit. In the crystal, the complex cations and uncoordinated perchlorate anions are linked by N—H⋯O hydrogen bonds

(Benzoato-κ2 O,O′)(5,5,7,12,12,14-hexa­methyl-1,4,8,11-tetra­azacyclo­tetra­decane-κ4 N,N′,N′′,N′′′)nickel(II) perchlorate benzoic acid solvate

In the title compound, [Ni(C7H5O2)(C16H36N4)]ClO4·C7H6O2, the Ni atom displays a distorted octa­hedral coordination geometry with four N atoms of the ligand rac-5,5,7,12,12,14-hexa­methyl-1,4,8,11-tetra­azacyclo­tetra­decane (L) in a folded configuration and two benzoate (bz) O atoms. The [Ni(rac-L)(bz)]+ complex cation, perchlorate anion and benzoic acid mol­ecules engage in hydrogen bonding, with N⋯O distances between 2.970 (3) and 3.123 (3) Å and an O⋯O distance of 2.691 (3) Å

cis-[(7R,14R)-5,5,7,12,12,14-Hexa­methyl-1,4,8,11-tetra­azacyclo­tetra­decane-κ4 N](oxalato-κ2 O,O′)nickel(II) oxalic acid solvate

Both mol­ecules of the title compound, [Ni(C2O4)(C16H36N4)]·C2H2O4, are located on a crystallographic twofold rotation axis. The NiII atom shows a distorted octa­hedral geometry. The crystal packing is stabilized by N—H⋯O and O—H⋯O hydrogen bonds