scholarly journals Crystal structure of bis(1,1,2,2-tetramethyldiphosphane-1,2-dithione-κ2S,S′)copper(I) tetrafluoridoborate

Author(s):  
Peter W. R. Corfield ◽  
Uwe Seeler

In the title compound, [Cu(C4H12P2S2)2]BF4, both diphosphine disulfide molecules bind to the CuIatom, as chelating ligandsviathe S atoms, forming a monovalent cation with a slightly distorted tetrahedral coordination around the CuIatom. The average Cu—S distance is 2.350 (15) Å, with small but possibly significant differences within each chelate ring. Ligand P=S distances average 1.964 (3) Å, and the P—P distances are 2.2262 (13) and 2.2166 (14) Å. The ligand chelate rings are twisted in opposite directions, with one in the λ and one in the δ configuration. Although the anisotropic displacement parameters of the F atoms of the anion are quite large compared to that of the B atom, difference Fourier syntheses indicate only one set of sites for the F atoms. In the crystal, possible C—H...F hydrogen bonds may stabilize the orientation. The B—F distances, uncorrected for libration, average 1.359 (6) Å.

Author(s):  
Mikhail E. Minyaev ◽  
Ilya E. Nifant'ev ◽  
Alexander N. Tavtorkin ◽  
Sof'ya A. Korchagina ◽  
Shadana Sh. Zeynalova

Crystals of the title compound, [Li{OOP(O-2,6-iPr2C6H3)2}(CH3OH)3]·CH3OH or [Li(C24H34O4P)(CH3OH)3]·CH3OH, have been formed in the reaction between HOOP(O-2,6-iPr2C6H3)2and LiOH in methanol. The title compound is of interest as it represents the first reported crystal structure of the family of lithium phosphate diesters. The {Li(CH3OH)3[O2P(O-iPr2C6H3)2]} unit displays the Li atom in a slightly distorted tetrahedral coordination environment and exhibits one intramolecular O—H...O hydrogen bond between a coordinating methanol molecule and the terminal non-coordinating O atom of the phosphate group. The unit is connected with two non-coordinating methanol molecules through two intermolecular O—H...O hydrogen bonds, and with a neighbouring unit through two other O—H...O interactions. These intermolecular hydrogen bonds lead to the formation of infinite chains along [100]. There are no significant interactions between the chains.


2014 ◽  
Vol 70 (9) ◽  
pp. 118-120 ◽  
Author(s):  
Sudesh T. Manjare ◽  
Harkesh B. Singh ◽  
Ray J. Butcher

In the structure of the title compound, [HgCl2(C12H20N2)], the HgIIatom has a distorted tetrahedral coordination sphere defined by two tertiary amine N-atom donors, as well as two Cl−anions [the dihedral angle between the N—Hg—N and Cl—Hg—Cl planes is 82.80 (9)°]. The five-membered chelate ring adopts an envelope conformation, with puckering parameters ofQ(2) = 0.446 (6) Å and ϕ(2) = 88.8 (6)°, with the two amine CH3substituents on opposite sides of the ring. In the crystal, the molecules are linked by C—H...Cl interactions into a zigzag chain parallel to [101].


2007 ◽  
Vol 63 (11) ◽  
pp. m2676-m2677 ◽  
Author(s):  
Leyla Tatar Yıldırım ◽  
Orhan Atakol

The molecule of the title compound, [NiZnBr2(C17H16N2O2)(C6H7N)2], contains a heterodinuclear arrangement. The two metal ions are bridged via phenol O atoms of the propane-1,3-diylbis(nitrilomethylidyne)]diphenolate (salpd2−) ligand. The two bridging O atoms of salpd2− and two Br atoms constitute a distorted tetrahedral coordination environment around the ZnII ion, while the NiII ion has a distorted octahedral coordination environment formed by two O and two N atoms of salpd2− in the equatorial plane and two N atoms of two 4-methylpyridine ligands in the axial positions. In the crystal structure, weak intermolecular C—H...Br hydrogen bonds link the molecules into chains along the c axis. Weak intramolecular C—H...O and C—H...N hydrogen bonds are also present.


1982 ◽  
Vol 37 (11) ◽  
pp. 1450-1455 ◽  
Author(s):  
Rudolf Allmann ◽  
Eberhard Hohaus ◽  
Stanislaw Olejnik

The title compound, C25H20BNO2 · CH3OH, was examined by UV, IR, 1H, and 13C NMK spectroscopy as well as by thermogravimetry and X-ray structure analysis (Pbnb, a = 8.815, b = 17.309, c=28.992 Å, R= 5.5%). These investigations show the six-membered chelate ring (chelate A) to exist as formulated in [2] and not as a five-membered chelate ring B. One methanol molecule connects two chelate molecules by hydrogen bonds, resulting in an overall ratio of chelate to methanol of 1 : 1.


2000 ◽  
Vol 57 (1) ◽  
pp. m25-m27 ◽  
Author(s):  
Miao Du ◽  
Xian-He Bu ◽  
Lin-Hong Weng ◽  
Xue-Bing Leng ◽  
Ya-Mei Guo

In the crystal structure of the title complex, [Cu(C10H9N3)2](ClO4)2, the CuIIcenter is four-coordinated by the nitrogen donors of the pyridine rings of the ligand, bis(2-pyridyl)amine. The crystal structure reveals that the CuN4coordination sphere has a distorted tetrahedral coordination geometry with a crystallographicC2axis through the CuIIcenter. The perchlorate anions link the complex cations to form a chain structure through C—H...O close contacts and N—H...O hydrogen bonds.


2007 ◽  
Vol 63 (11) ◽  
pp. m2707-m2707 ◽  
Author(s):  
Hai-Yan Liu ◽  
Ji-Cheng Ma ◽  
Jin Yang

In the title compound, [Ag(C6H6NO3S)(C8H8N2)], the AgI cation is four-coordinated by three N atoms from two different 2,3-diethylpyrazine ligands and one –NH2 group of a 4-aminobenzenesulfonate ligand, and one sulfonate O atom in a distorted tetrahedral coordination geometry. The AgI centers are doubly bridged by both types of ligands, forming a one-dimensional chain. N—H...O hydrogen bonds complete the structure.


2014 ◽  
Vol 70 (3) ◽  
pp. m78-m78
Author(s):  
Martin Lutz

The title compound, [Co(CH3COO)2(CH4N2S)2], is isotypic with the corresponding ZnIIcomplex. The metal atom is in a distorted tetrahedral coordination environment with the two S atoms from two thiourea ligands and two O atoms from two acetate anions as the coordinating atoms. All H atoms of the thiourea ligands are involved in N—H...O and N—H...S hydrogen bonds, leading to a three-dimensional network.


2006 ◽  
Vol 62 (4) ◽  
pp. m717-m718 ◽  
Author(s):  
Xiao-Yang Qiu

The title compound, [ZnBr2(C11H16N2O)], is a mononuclear Schiff base zinc(II) complex. The ZnII atom is four-coordinated by one phenolate O and one imine N atom of the Schiff base ligand, and by two bromide anions, forming a tetrahedral coordination. In the crystal structure, molecules are linked through intermolecular N—H...O and N—H...Br hydrogen bonds, forming sheets parallel to the ab plane.


2013 ◽  
Vol 68 (4) ◽  
pp. 357-361 ◽  
Author(s):  
Di Sun ◽  
Shuai Yuan ◽  
Shan-Shan Liu ◽  
Ya-Qin Zhao ◽  
Lu-Lu Han ◽  
...  

The ultrasound-assisted reaction of AgNO3, 2-amino-4,6-dimethylpyrimidine (dmapym) and 2,6-naphthalenedicarboxylic acid (H2npd) gave rise to a new 2D network of the formula [Ag2(dmapym)2(npd)]n (1). The atoms Ag1 and Ag2 in the complex show seesaw and distorted tetrahedral coordination geometries, respectively. The dmapym ligand acts as a bidentate bridge to bind paired Ag(I) ions into a chain. The chains are further connected by npd linkers to form the resultant 2D network reinforced by N-H···O hydrogen bonds between dmapym and npd. Weak C-H···p interactions are also found in the crystal structure. Complex 1 exhibits photoluminescence in the solid state at room temperature with an emission maximum at 418 nm upon excitation at 330 nm.


2014 ◽  
Vol 70 (9) ◽  
pp. m310-m311 ◽  
Author(s):  
Wattana Ruangwut ◽  
Chaveng Pakawatchai

In the mononuclear mixed-ligand title complex, [AgCl(C7H7NS)(C18H15P)2], the AgIion is four coordinated by one S atom of a benzenecarbothioamide ligand, two P atoms of two triphenylphosphane ligands and one chloride ion, displaying a distorted tetrahedral coordination geometry. In the crystal, pairs of N—H...Cl hydrogen bonds form inversion dimers. An intramolecular N—H...Cl hydrogen bond is also observed.


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