Crystal structure of catena-poly[[(3-tert-butyl-pyridine-κN)(4-tert-butyl-pyridine-κN)cadmium]-di-µ-thio-cyanato-κ(2) N:S;κ(2) S:N].

In the crystal structure of the title compound, [Cd(NCS)2(C9H13N)2] n , the Cd(II) cations are coordinated in a slightly distorted octa-hedral geometry by one 3-tert-butyl-pyridine ligand, one 4-tert-butyl-pyridine ligand and two pairs of translationally-equivalent µ-1,3-bridging thio-cyanate ligands, all of which are in general positions. These µ-1,3-bridging thio-cyante anions bridge the Cd(II) cations, forming chains that propagate parallel to the b axis.

Poly[(aceto-nitrile-κN)-µ3-thio-cyanato-κ(3) N:S:S-µ2-thio-cyanato-κ(2) N:S-cadmium].

The asymmetric unit of the title compound, [Cd(NCS)2(CH3CN)] n , consists of one Cd(II) cation, two thio-cyanate anions and one aceto-nitrile ligand, all in general positions. The Cd(II) cation is coordinated by three N atoms of two thio-cyanate anions and one aceto-nitrile ligand, as well as three S atoms of symmetry-related thio-cyanate anions within a slightly distorted octa-hedral coordination environment. The Cd(II) cations are linked by µ-1,3(N,S) and µ-1,1,3(S,S,N) thio-cyanate anions into layers that are located in the ab plane.

Trans-bis-(3-tert-butyl-pyridine-κN)bis-(4-tert-butyl-pyridine-κN)bis-(thio-cyanato-κN)manganese(II).

The asymmetric unit of the title compound [Mn(NCS)(2)(C(9)H(13)N)(4)] consists of one Mn(II) cation located on a center of inversion, one thio-cyanato anion, one 3-tert-butyl-pyridine ligand and one 4-tert-butyl-pyridine ligand in general positions. The tert-butyl group of the 4-tert-butyl-pyridine ligand is disordered over two sets of sites in a 0.60:0.40 ratio. The Mn(II) cation is coordinated by six N atoms of four tert-butyl-pyridine ligands and two N-bonded thio-cyanato anions within a slightly distorted octa-hedral coordination environment.

Bis-(3-tert-butyl-pyridine-κN)bis-(4-tert-butyl-pyridine-κN)bis(thio-cyanato-κN)cadmium.

The asymmetric unit of the title compound, [Cd(NCS)(2)(C(9)H(13)N)(4)], consists of one Cd(II) cation located on a centre of inversion, one thio-cyanate anion, one 3-tert-butyl-pyridine ligand and one 4-tert-butyl-pyridine ligand in general positions. The tert-butyl group of the 4-tert-butyl-pyridine ligand is disordered over two sets of sites in a 0.25:0.75 ratio and was refined using a split model. The Cd(II) cation is coordinated by six N atoms of four tert-butyl-pyridine ligands and two N-bonded thio-cyanate anions within a slightly distorted octa-hedral coordination environment.

Poly[bis-(µ(2)-pyrimidine-κN:N')bis-(seleno-cyanato-κN)zinc].

The asymmetric unit of the title compound, [Zn(NCSe)(2)(C(4)H(4)N(2))(2)](n), consists of one Zn(2+) cation located on a special position with site symmetry 2/m, one seleno-cyanate anion on a mirror plane and one pyrimidine ligand on a twofold rotation axis. The zinc cation is coordinated by six N atoms of four pyrimidine ligands and two N-bonded seleno-cyanate anions in mutually trans orientations within a slightly distorted octa-hedral coordination environment. The Zn atoms are µ-1,3-bridged via the pyrimidine ligands into a polymeric layer extending parallel to (100).

Bis(pyridazine-κN)bis-(seleno-cyanato-κN)zinc.

The asymmetric unit of the title compound, [Zn(NCSe)(2)(C(4)H(4)N(2))(2)], consists of one Zn(II) cation, located on a twofold rotation axis, one seleno-cyanate anion and one pyridazine ligand in general positions. The Zn(II) atom is coordinated by two N-atoms of two pyridazine ligands and two terminal N-bonded seleno-cyanate anions within a slightly distorted tetra-hedral coordination environment. In the crystal, discrete complex mol-ecules are arranged in layers parallel to the ac plane, with Zn(II)⋯Zn(II) distances of 8.0906 (6) Šalong the a axis and of 9.0490 (7) or 9.3604 (7) Šalong the c axis. The complex mol-ecules are further linked via weak Se⋯Se inter-actions, with Se⋯Se distances of 3.8235 (9) Å.

Poly[diaqua-tetra-µ-seleno-cyanato-cadmium(II)dipotassium(I)].

In the title compound, [CdK(2)(NCSe)(4)(H(2)O)(2)](n), the cadmium(II) cation is situated on a twofold rotation axis and is coordinated in a slightly distorted tetra-hedral geometry by two symmetry-related µ-1,1,1,3 and two-symmetry related µ-1,1,3,3 bridging seleno-cyanate anions, all of which are Se bonded. These bridging seleno-cyanate anions are further coordinated to two symmetry-related potassium ions. Each of the potassium ions is coordinated by one terminally bonded water mol-ecule and six seleno-cyanate anions, two of which are crystallographically independent. The asymmetric unit consists of one cadmium and one potassium cation, two bridging seleno-cyanate anions and one water mol-ecule. The polymeric subunits are further connected via the seleno-cyanate anions into a three-dimensional coordination network. In this coordination network, intramolecular hydrogen bonds between neighbouring water molecules can be found.

catena-Poly[[µ(3)-hydroxido-tetra-µ(2)-pyrid-azine-1:2κN:N';1:3κN:N';2:3κN:N'-tetrakis(selenocyanato)-1κN,2κN,3κN-trizinc(II)]-µ-cyanido-1:2'κC:N].

In the crystal structure of the title compound, [Zn(3)(NCSe)(4)(OH)(CN)(C(4)H(4)N(2))(4)](n) one of the two crystallograph-ically independent zinc(II) cations is coordinated by two terminal N-bonded seleno-cyanato anions and two N atoms of two symmetry-related pyridazine ligands in a trigonal-bipyramidal geometry, while the other zinc(II) cation is coordinated by one terminal N-bonded seleno-cyanato anion, one µ-1,2-cyanido anion and three N atoms of three crystallographically independent pyridazine ligands in a slightly distorted octa-hedral coordination geometry. The zinc(II) atoms are further connected via a µ(3)-hydroxido anion into trinuclear building blocks. The formula unit consists of three zinc cations, four seleno-cyanato anions, one µ(3)-hydroxido anion, four pyridazine mol-ecules as well as one cyanido anion. The asymmetric unit contains half of a formula unit. One of the zinc atoms, two seleno-cyanato anions, two pyridazine ligands and the µ(3)-hydroxido anion are located on a crystallographic mirror plane, whereas the cyanido anion is located on a twofold rotation axis. Therefore, this anion is disordered due to symmetry. The cyanido anions connect the metal centres into polymeric zigzag chains propagating along the a axis.