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Bis(1,3-dibutylthiourea)dicyanido-mercury(II).

ABSTRACT: In the title compound, [Hg(CN)(2)(C(9)H(20)N(2)S)(2)], the Hg atom lies on a twofold rotation axis. There is only half a mol-ecule in the asymmetric unit. The Hg atom has a distorted tetra-hedral coordination involving the S atoms of two 1-butyl-3-propyl-thio-urea groups and the C atoms of the two CN(-) anions. In the crystal packing, adjacent mol-ecules are connected by inter-molecular N-H?N and N-H?S hydrogen bonds, forming infinite chains in three dimensions.

SUBMITTER: Ahmad S

PROVIDER: S-EPMC2970451 | biostudies-literature | 2009 Sep

REPOSITORIES: biostudies-literature

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[Ultrasound in diagnosis of certain diseases of the thyroid].

Shokurov N N NN

Eksperimental'naia khirurgiia i anesteziologiia 19660301 2

PMID: 5994269

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Bis[1,3-bis-(2-cyano-phen-yl)triazenido]mercury(II).

Project description:In the title compound, [Hg(C(14)H(8)N(5))(2)], the central atom is four-coordinated by two bidentate 1,3-bis-(2-cyano-phen-yl)triazenide ligands in a distorted square-planar geometry. The asymmteric unit is composed of one ligand molecule and one Hg(II) ion, which is disordered over two sites, one lying on an inversion center and the other on a general position with site-occupancy factors of 0.2378?(7) and 0.3811?(7), respectively. The monomeric mol-ecules of the complex are linked into pairs through non-classical C-H?N hydrogen bonds. The resulting dimeric units are assembled by translation along the crystallographic c axis into chains linked through secondary ?-? inter-actions [centroid-centroid distances = 3.685?(2) and 3.574?(2)?Å], as well as C-H?? stacking inter-actions, resulting in a two-dimensional architecture.

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(2,2'-Dimethyl-4,4'-bi-1,3-thia-zole-κN,N')bis(thio-cyanato-κS)mercury(II).

Project description:The Hg(II) atom in the title compound, [Hg(SCN)(2)(C(8)H(8)N(2)S(2))], is chelated by the bidentate heterocycle through the N atoms and is coordinated by the S atoms of two thiocyanate anions, resulting in a considerably distorted tetra-hedral coordination geometry.

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Bis(1-benzyl-3-methyl-imidazolium-κC)mercury(II) bis-(hexa-fluoridophosphate).

Project description:The asymmetric unit of the title complex, [Hg(C(11)H(12)N(2))(2)](PF(6))(2), consists of one bis-(1-benzyl-3-methyl-imidazolium)mercury(II) cation, one half of the cation and an additional Hg(II) atom, which lies on an inversion centre, and three hexa-fluorido-phosphate anions. The Hg(II) atoms exist in a linear coordination geometry [C-Hg-C = 178.9 (2) and 180°] formed by two carbene C atoms from the imidazole rings. In the crystal, the cations and anions are connected via C-H⋯F hydrogen bonds, forming a three-dimensional network.

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Project description:In the title complex, [Cu(N(3))(2)(C(3)H(10)N(2))(2)], the Cu(II) ion resides on a centre of symmetry and is in a Jahn-Teller distorted octa-hedral coordination environment comprising two N atoms from azide anions in axial positions and four N atoms from propane-1,3-diamine (tn) ligands in equatorial positions. Inter-molecular N-H?N hydrogen bonds produce R(2) (1)(6), R(2) (2)(8), R(2) (2)(12) and R(4) (2)(8) rings, generating a two-dimensional layer.

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Bis(1,3-diethyl-benzimidazolium) tetra-bromidomercurate(II).

Project description:In the title compound, (C(11)H(15)N(2))(2)[HgBr(4)], the tetra-coordinated Hg(II) center of the complex anion adopts a distorted tetra-hedral geometry [Hg-Br = 2.5755 (8)-2.623 (11) Å and Br-Hg-Br = 103.78 (19)-116.4 (3)°]. One of the Br atoms is disordered over two sites [site-occupancy factors = 0.51 (6) and 0.49 (6)]. The N-C-N angles in the cations are 110.7 (6) and 111.4 (7)°. In the crystal packing, a supra-molecular chain is formed via both weak inter-molecular C-H⋯Br hydrogen bonds and π-π aromatic ring stacking inter-actions [centroid-centroid separation = 3.803 (1) Å].

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Crystal structure of bis-(thio-cyanato-?S)bis-(thio-urea-?S)mercury(II).

Project description:In the title complex, [Hg(NCS)2(CH4N2S)2], the Hg(II) atom is four-coordinated having an irregular four-coordinate geometry composed of four thione S atoms of two thio-cyanate groups and two thio-urea groups. The S-Hg-S angles are 172.02?(9)° for the trans-thio-cyanate S atoms and 90.14?(5)° for the cis-thio-urea S atoms. The mol-ecular structure is stabilized by an intra-molecular N-H?S hydrogen bond, which forms an S(6) ring motif. In the crystal, mol-ecules are linked by a number of N-H?N and N-H?S hydrogen bonds, forming a three-dimensional framework. The first report of the crystal structure of this compound appeared in 1966 [Korczynski (1966 ?). Rocz. Chem. 40, 547-569] with an extremely high R factor of 17.2%, and no mention of how the data were collected.

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Bis(benzoyl-acetonato)bis-(1,3-di-4-pyridyl-propane)manganese(II).

Project description:In the title compound, [Mn(C(10)H(9)O(2))(2)(C(13)H(14)N(2))(2)], the Mn(II) ion lies on a crystallographic inversion center and has a slightly distorted octa-hedral coordination environment. Weak π-π stacking inter-actions, with centroid-centroid distances of 3.862 (2) and 3.887 (5) Å, and significant C-H⋯π inter-actions help to stabilize the crystal structure. The atoms of the unique terminal 4-pyridine-propane group are disordered over two sites, the ratio of refined occpancies being 0.712 (7):0.288 (7).

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Bis[1,3-bis-(diphenyl-phosphinoylimino)isoindolinato-κO,N,O']calcium(II).

Project description:In the title compound, [Ca(C(32)H(24)N(3)O(2)P(2))(2)], the 1,3-bis-(diphenyl-phosphinoylimino)isoindoline ligand adopts a tridentate coordination mode. The compound exhibits a distorted octa-hedral geometry. The Ca atom lies on a twofold rotation axis.

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Bis{μ-2,5-bis-[4-(2-pyridylmethyl-amino)phen-yl]-1,3,4-oxadiazole}bis-[dichlorido-mercury(II)].

Project description:In the title centrosymmetric compound, [Hg(2)Cl(4)(C(26)H(22)N(6)O)(2)], each Hg(II) center adopts a distorted HgN(3)Cl(2) trigonal bipyramidal coordination geometry, formed by two pyridine N atoms, one imine N atom and two chloride anions. Within the organic ligand, the oxadiazole ring is nearly coplanar with the two benzene rings [dihedral angles = 5.9 (4) and 6.5 (4)°] and nearly perpendicular to the two pyridine rings with the same dihedral angle of 77.4 (4)°. The two organic ligands bridge two Hg(II) ions to form the macrocyclic complex. Inter-molecular N-H⋯Cl and N-H⋯N hydrogen bonding helps to stabilize the crystal structure.

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Diaqua-bis-(propane-1,3-diamine)-nickel(II) bis-(propane-1,3-diamine)-disulfato-nickelate(II).

Project description:The ionic Ni(II) title complex, [Ni(C(3)H(10)N(2))(2)(H(2)O)(2)][Ni(SO(4))(2)(C(3)H(10)N(2))(2)], is built up of [Ni(dipr)(2)(H(2)O)(2)](2+) complex cations and [Ni(dipr)(2)(SO(4))(2)](2-) complex anions (dipr is propane-1,3-diamine). Both Ni(II) atoms display a slightly distorted octa-hedral coordination and are located on inversion centers. There are several types of hydrogen-bonding inter-actions, which connect complex cations and anions into a two-dimensional network parallel to (010). Hydrogen bonds formed by the axially coordinated water mol-ecule of the complex cation and one of the O atoms of the sulfate groups of the complex anion (first type) link them into chains along the c axis. These chains are linked to each other through hydrogen bonds formed by an O atom (second type) of the SO(4) groups and NH(2) groups of the ligand of the complex cations from neighboring chains, forming a two-dimensional hydrogen-bonded net perpendicular to the b axis. The third type of O atoms of the sulfate groups of the complex anion are also linked into chains by a combination of both previously described types of H-atom connections.

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