Bis(pyridazine-κN)bis­(seleno­cyanato-κN)zinc

The asymmetric unit of the title compound, [Zn(NCSe)2(C4H4N2)2], consists of one ZnII cation, located on a twofold rotation axis, one seleno­cyanate anion and one pyridazine ligand in general positions. The ZnII atom is coordinated by two N-atoms of two pyridazine ligands and two terminal N-bonded seleno­cyanate anions within a slightly distorted tetra­hedral coordination environment. In the crystal, discrete complex mol­ecules are arranged in layers parallel to the ac plane, with ZnII⋯ZnII distances of 8.0906 (6) Å along the a axis and of 9.0490 (7) or 9.3604 (7) Å along the c axis. The complex mol­ecules are further linked via weak Se⋯Se inter­actions, with Se⋯Se distances of 3.8235 (9) Å

catena-Poly[[μ3-hydroxido-tetra-μ2-pyrid­azine-1:2κ4 N:N′;1:3κ2 N:N′;2:3κ2 N:N′-tetrakis(selenocyanato)-1κN,2κN,3κ2 N-trizinc(II)]-μ-cyanido-1:2′κ2 C:N]

In the crystal structure of the title compound, [Zn3(NCSe)4(OH)(CN)(C4H4N2)4]n one of the two crystallograph­ically independent zinc(II) cations is coordinated by two terminal N-bonded seleno­cyanato 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 seleno­cyanato anion, one μ-1,2-cyanido anion and three N atoms of three crystallographically independent pyridazine ligands in a slightly distorted octa­hedral coordination geometry. The zinc(II) atoms are further connected via a μ3-hydroxido anion into trinuclear building blocks. The formula unit consists of three zinc cations, four seleno­cyanato anions, one μ3-hydroxido anion, four pyridazine mol­ecules as well as one cyanido anion. The asymmetric unit contains half of a formula unit. One of the zinc atoms, two seleno­cyanato anions, two pyridazine ligands and the μ3-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

Poly[diaqua­tetra-μ-seleno­cyanato-cadmium(II)dipotassium(I)]

In the title compound, [CdK2(NCSe)4(H2O)2]n, the cadmium(II) cation is situated on a twofold rotation axis and is coordinated in a slightly distorted tetra­hedral geometry by two symmetry-related μ-1,1,1,3 and two-symmetry related μ-1,1,3,3 bridging seleno­cyanate anions, all of which are Se bonded. These bridging seleno­cyanate anions are further coordinated to two symmetry-related potassium ions. Each of the potassium ions is coordinated by one terminally bonded water mol­ecule and six seleno­cyanate anions, two of which are crystallographically independent. The asymmetric unit consists of one cadmium and one potassium cation, two bridging seleno­cyanate anions and one water mol­ecule. The polymeric subunits are further connected via the seleno­cyanate anions into a three-dimensional coordination network. In this coordination network, intramolecular hydrogen bonds between neighbouring water molecules can be found

<i>Trans</i>-bis(3-<i>tert</i>-butylpyridine-κ<i>N</i>)bis(4-<i>tert</i>-butylpyridine-κ<i>N</i>)bis(thiocyanato-κ<i>N</i>)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 thio­cyanato anion, one 3-tert-butyl­pyridine ligand and one 4-tert-butyl­pyridine ligand in general positions. The tert-butyl group of the 4-tert-butyl­pyridine 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-butyl­pyridine ligands and two N-bonded thio­cyanato anions within a slightly distorted octa­hedral coordination environment

Poly[(acetonitrile-&#954;N)-&#956;3-thiocyanato-&#954;3N:S:S-&#956;2-thiocyanato-&#954;2N:S-cadmium]

The asymmetric unit of the title compound, [Cd(NCS)2(CH3CN)]n, consists of one CdII cation, two thiocyanate anions and one acetonitrile ligand, all in general positions. The CdII cation is coordinated by three N atoms of two thiocyanate anions and one acetonitrile ligand, as well as three S atoms of symmetry-related thiocyanate anions within a slightly distorted octahedral coordination environment. The CdII cations are linked by &#956;-1,3(N,S) and &#956;-1,1,3(S,S,N) thiocyanate anions into layers that are located in the ab plane

Crystal structure of catena-poly[[(3-tert-butylpyridine-κN)(4-tert-butylpyridine-κN)cadmium]-di-μ-thiocyanato-κ2N:S;κ2S:N]

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