scholarly journals Bis[trans-difluoridotetrakis(pyridine-κN)chromium(III)] sodium tetrachloridozincate perchlorate from synchrotron data

2014 ◽  
Vol 70 (7) ◽  
pp. m280-m280 ◽  
Author(s):  
Dohyun Moon ◽  
Keon Sang Ryoo ◽  
Jong-Ha Choi
Keyword(s):  
Hydrogen Bonds ◽  
Crystal Packing ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Tetrahedral Geometry ◽  
Bond Lengths ◽  
Distorted Tetrahedral Geometry ◽  
Distorted Octahedral ◽  
The Mean ◽  
Supramolecular Chains

The title salt, Na[CrF2(C5H5N)4]2[ZnCl4]ClO4, consists of two cationic CrIIIcomplexes, an Na+cation, one [ZnCl4]2−anion and one ClO4−anion. The CrIIIatoms are coordinated by four pyridine (py) N atoms and two F atoms in atransarrangement, displaying a distorted octahedral geometry. The mean Cr—N(py) and Cr—F bond lengths are 2.086 (8) and 1.864 (14) Å, respectively. The [ZnCl4]2−anion has a distorted tetrahedral geometry. The most notable feature of the crystal packing is the formation of weak pyridine–perchlorate C—H...O hydrogen bonds, resulting in supramolecular chains along theb-axis direction. The perchlorate anion was disordered over two sets of sites in a 0.868 (3):0.132 (3) ratio.

scholarly journals Crystal structure of bis[trans-(1,4,8,11-tetraazacyclotetradecane-κ4N)bis(thiocyanato-κN)chromium(III)] tetrachloridozincate from synchrotron data

2015 ◽  
Vol 71 (5) ◽  
pp. 540-543 ◽  
Author(s):  
Dohyun Moon ◽  
Keon Sang Ryoo ◽  
Jong-Ha Choi
Keyword(s):  
Crystal Packing ◽  
Rotation Axis ◽  
Complex Cation ◽  
Distorted Octahedral Geometry ◽  
Asymmetric Unit ◽  
Tetrahedral Geometry ◽  
Distorted Tetrahedral Geometry ◽  
Hydrogen Bonding Interactions ◽  
Distorted Octahedral ◽  
The Mean

The structure of the title compound, [Cr(NCS)2(cyclam)]2[ZnCl4] (cyclam = 1,4,8,11-tetraazacyclotetradecane, C10H24N4), has been determined from synchrotron data. The asymmetric unit contains two independent halves of the CrIIIcomplex cations and half of a tetrachloridozincate anion. In each complex cation, the CrIIIatom is coordinated by the four N atoms of the cyclam ligand in the equatorial plane and by two N-bound NCS−anions in atransaxial arrangement, displaying a distorted octahedral geometry with crystallographic inversion symmetry. The mean Cr—N(cyclam) and Cr—N(NCS) bond lengths are 2.065 (4) and 1.995 (6) Å, respectively. The macrocyclic cyclam moieties adopt centrosymmetrictrans-III configurations with six- and five-membered chelate rings in chair andgaucheconfigurations, respectively. The [ZnCl4]2−anion, which lies about a twofold rotation axis, has a slightly distorted tetrahedral geometry. The crystal packing is stabilized by hydrogen-bonding interactions between the N—H groups of the cyclam ligands, the S atoms of the NCS−groups and the Cl−ligands of the anion.

scholarly journals Crystal structure of bis[trans-(ethane-1,2-diamine-κ2N,N′)bis(thiocyanato-κN)chromium(III)] tetrachloridozincate from synchrotron data

2015 ◽  
Vol 71 (1) ◽  
pp. 100-103 ◽  
Author(s):  
Dohyun Moon ◽  
Jong-Ha Choi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Inversion Symmetry ◽  
Asymmetric Unit ◽  
Intermolecular Hydrogen Bonds ◽  
Tetrahedral Geometry ◽  
Distorted Tetrahedral Geometry ◽  
Distorted Octahedral

The structure of the title compound, [Cr(NCS)2(C2H8N2)2]2[ZnCl4], has been determined from synchrotron data. In the asymmetric unit, there are four independent halves of the CrIIIcomplex cations, each of which lies on an inversion centre, and one tetrachloridozincate anion in a general position. The CrIIIatoms are coordinated by the four N atoms of two ethane-1,2-diamine (en) ligands in the equatorial plane and two N-bound NCS−anions in atransarrangement, displaying a slightly distorted octahedral geometry with crystallographic inversion symmetry. The Cr—N(en) and Cr—N(NCS) bond lengths range from 2.0653 (10) to 2.0837 (10) Å and from 1.9811 (10) to 1.9890 (10) Å, respectively. The five-membered metalla-rings are in stablegaucheconformations. The [ZnCl4]2−anion has a distorted tetrahedral geometry. The crystal structure is stabilized by intermolecular hydrogen bonds involving the en NH2or CH2groups as donors and chloride ligands of the anion and S atoms of NCS−ligands as acceptors.

scholarly journals Tris(ethylenediamine-κ2N,N′)nickel(II) bis(dimethyl phosphate)

2012 ◽  
Vol 68 (8) ◽  
pp. m1032-m1032 ◽  
Author(s):  
Masoud Rafizadeh ◽  
Hamid Reza Saadati Moshtaghin ◽  
Vahid Amani
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Tetrahedral Geometry ◽  
Distorted Tetrahedral Geometry ◽  
Dimethyl Phosphate ◽  
Dimensional Network ◽  
Distorted Octahedral

In the title compound, [Ni(C2H8N2)3][O2P(OCH3)2]2, the NiIIatom is six-coordinated in a distorted octahedral geometry by six N atoms from three ethylenediamine ligands. The P atoms of the anions adopt a distorted tetrahedral geometry. In the crystal, intermolecular N—H...O and C—H...O hydrogen bonds link the cations and anions into a three-dimensional network.

scholarly journals Crystal structure of a mononuclear RuIIcomplex with a back-to-back terpyridine ligand: [RuCl(bpy)(tpy–tpy)]+

2015 ◽  
Vol 71 (9) ◽  
pp. 1017-1021 ◽  
Author(s):  
Francisca N. Rein ◽  
Weizhong Chen ◽  
Brian L. Scott ◽  
Reginaldo C. Rocha
Keyword(s):  
Crystal Structure ◽  
Crystal Packing ◽  
Bidentate Ligand ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Stacking Interactions ◽  
Bite Angle ◽  
Distorted Octahedral ◽  
The Mean

We report the structural characterization of [6′,6′′-bis(pyridin-2-yl)-2,2′:4′,4′′:2′′,2′′′-quaterpyridine](2,2′-bipyridine)chloridoruthenium(II) hexafluoridophosphate, [RuCl(C10H8N2)(C30H20N6)]PF6, which contains the bidentate ligand 2,2′-bipyridine (bpy) and the tridendate ligand 6′,6′′-bis(pyridin-2-yl)-2,2′:4′,4′′:2′′,2′′′-quaterpyridine (tpy–tpy). The [RuCl(bpy)(tpy–tpy)]+monocation has a distorted octahedral geometry at the central RuIIion due to the restricted bite angle [159.32 (16)°] of the tridendate ligand. The Ru-bound tpy and bpy moieties are nearly planar and essentially perpendicular to each other with a dihedral angle of 89.78 (11)° between the least-squares planes. The lengths of the two Ru—N bonds for bpy are 2.028 (4) and 2.075 (4) Å, with the shorter bond being opposite to Ru—Cl. For tpy–tpy, the mean Ru—N distance involving the outer N atomstransto each other is 2.053 (8) Å, whereas the length of the much shorter bond involving the central N atom is 1.936 (4) Å. The Ru—Cl distance is 2.3982 (16) Å. The free uncoordinated moiety of tpy–tpy adopts atrans,transconformation about the interannular C—C bonds, with adjacent pyridyl rings being only approximately coplanar. The crystal packing shows significant π–π stacking interactions based on tpy–tpy. The crystal structure reported here is the first for a tpy–tpy complex of ruthenium.

scholarly journals Bis[tetrakis(pyridin-2-yl)methane-κ3N,N′,N′′]cobalt(II) tetrakis(thiocyanato-κN)cobaltate(II) methanol monosolvate

2014 ◽  
Vol 70 (3) ◽  
pp. m96-m97 ◽  
Author(s):  
Yuya Tsunezumi ◽  
Kouzou Matsumoto ◽  
Shinya Hayami ◽  
Akira Fuyuhiro ◽  
Satoshi Kawata
Keyword(s):  
Complex Anion ◽  
Complex Cation ◽  
Solvent Molecule ◽  
Octahedral Geometry ◽  
Title Complex ◽  
Distorted Octahedral Geometry ◽  
Weak Hydrogen Bond ◽  
Tetrahedral Geometry ◽  
Distorted Tetrahedral Geometry ◽  
Distorted Octahedral

The title complex, [Co(C21H16N4)2][Co(NCS)4]·CH3OH, consists of one [Co{C(py)4}2]2+complex cation [C(py)4= tetrakis(pyridin-2-yl)methane], one [Co(NCS)4]2−complex anion and a methanol solvent molecule. In the cation, the CoIIatom is coordinated by six N atoms of two C(py)4ligands in a distorted octahedral geometry. In the anion, the CoIIatom is coordinated by the N atoms of four NCS−ligands in a distorted tetrahedral geometry. The methanol molecule is disordered and was modelled over three orientations (occupancies 0.8:0.1:0.1). There are two weak hydrogen-bond-like interactions between the methanol solvent molecule and NCS−ligands of the anion [O...S = 3.283 (3) and 3.170 (2) Å].

scholarly journals Diaquabis(2,2′-bi-1H-imidazole)manganese(II) benzene-1,4-dicarboxylate

2012 ◽  
Vol 68 (6) ◽  
pp. m829-m829
Author(s):  
Lining Yang ◽  
Yanxiang Zhi ◽  
Jiahui Hei ◽  
Yanqing Miao
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Water Molecules ◽  
Asymmetric Unit ◽  
Π Interactions ◽  
Centroid Distance ◽  
Distorted Octahedral

The asymmetric unit of the title compound, [Mn(C6H6N4)2(H2O)2](C8H4O4), contains one-half each of the centrosymmetric cation and anion. The MnII atom is coordinated by four N atoms [Mn—N = 2.2168 (14) and 2.2407 (14) Å] from two 2,2′-biimidazole ligands and two water molecules [Mn—O = 2.2521 (14) Å] in a distorted octahedral geometry. Intermolecular N—H...O and O—H...O hydrogen bonds consolidate the crystal packing, which also exhibits π–π interactions between five-membered rings, with a centroid–centroid distance of 3.409 (2) Å.

scholarly journals fac-[1,2-Bis(pyridin-4-yl)ethane-κN]tricarbonyl(1,10-phenanthroline-κ2N,N′)rhenium(I) hexafluoridophosphate acetonitrile monosolvate

2014 ◽  
Vol 70 (7) ◽  
pp. m278-m279 ◽  
Author(s):  
Silvana Guilardi ◽  
Antonio Otavio Toledo Patrocinio ◽  
Sinval Fernandes de Sousa ◽  
Javier Ellena
Keyword(s):  
Hydrogen Bonds ◽  
Crystal Packing ◽  
Solvent Molecule ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Asymmetric Unit ◽  
Carbonyl Ligands ◽  
Distorted Octahedral ◽  
Phenanthroline Ligand ◽  
Solvent Molecules

The asymmetric unit of the title compound, [Re(C12H8N2)(C12H12N2)(CO)3]PF6.·CH3CN, contains one cation, one hexafluoridophosphate anion and one acetonitrile solvent molecule. The ReIion is coordinated by two N atoms from the 1,10-phenanthroline ligand and one N atom from the 1,2-bis(pyridin-4-yl)ethane ligand [mean Re—N = 2.191 (15) Å] and by three carbonyl ligands [mean Re—C = 1.926 (3) Å] in a distorted octahedral geometry. The electrostatic forces and weak C—H...F(O) hydrogen bonds pack cations and anions into the crystal with voids of 82 Å3, which are filled by solvent molecules. The crystal packing exhibits short intermolecular O...O distance of 2.795 (5) Å between two cations related by inversion.

scholarly journals trans-Diaquabis[(E)-3-(dimethylamino)-1-(2-pyridyl)prop-2-en-1-one-κ2N1,O]cobalt(II) dinitrate dihydrate

2009 ◽  
Vol 65 (6) ◽  
pp. m633-m633 ◽  
Author(s):  
Jian-Hong Bi
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Water Molecules ◽  
Inversion Center ◽  
Distorted Octahedral

In the title compound, [Co(C10H12N2O)2(H2O)2](NO3)2·2H2O, the CoIIion, located on an inversion center, istrans-coordinated by twoN,O-bidentate chelating (E)-3-(dimethylamino)-1-(2-pyridyl)prop-2-en-1-one ligands and by two water molecules in a slightly distorted octahedral geometry. Intermolecular O—H...O hydrogen bonds link the cations, anions and water molecules into layers parallel to theacplane. The crystal packing also exhibits weak intermolecular C—H...O hydrogen bonds.

Triaquachloridobis[4-(dimethylamino)benzaldehyde-κO]nickel(II) chloride

2007 ◽  
Vol 63 (11) ◽  
pp. m2819-m2819 ◽  
Author(s):  
Qiang Wang ◽  
Da-Qi Wang ◽  
Yu-Ying Sun
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Octahedral Geometry ◽  
Title Complex ◽  
Distorted Octahedral Geometry ◽  
Water Molecules ◽  
Two Dimensional ◽  
Distorted Octahedral ◽  
The Mean ◽  
Cl Atom

In the title complex, [NiCl(C9H11NO)2(H2O)3]Cl, the NiII ion is six-coordinated by one Cl atom [Ni—Cl = 2.3712 (11) Å], two O atoms from two 4-(dimethylamino)benzaldehyde (L) ligands and three water molecules in a distorted octahedral geometry [Ni—O = 2.076 (3)–2.094 (3) Å]. The mean planes of the two L ligands make a dihedral angle of 65.8 (1)°. In the crystal structure, intermolecular O—H...Cl hydrogen bonds link cations and anions into two-dimensional sheets parallel to the ab plane, with the L ligands protruding above and below.

scholarly journals Diaqua[5,10,15,20-tetrakis(4-chlorophenyl)porphyrinato-κ4N]iron(III) trifluoromethanesulfonate–4-hydroxy-3-methoxybenzaldehyde–water (1/1/2)

2014 ◽  
Vol 70 (8) ◽  
pp. m296-m297 ◽  
Author(s):  
Leila Ben Haj Hassen ◽  
Khaireddine Ezzayani ◽  
Yoann Rousselin ◽  
Habib Nasri
Keyword(s):  
Hydrogen Bonds ◽  
Crystal Packing ◽  
Three Dimensional ◽  
Octahedral Geometry ◽  
Distorted Octahedral Geometry ◽  
Water Molecules ◽  
Supramolecular Architecture ◽  
Centroid Distance ◽  
Distorted Octahedral ◽  
Benzene Rings

In the title compound, [Fe(C44H24Cl4N4)(H2O)2](SO3CF3)·C8H8O3·2H2O, the FeIIIcation is chelated by the four N atoms of the deprotonated tetrakis(4-chlorotetraphenyl)porphyrin (TClPP) and further coordinated by two water molecules in a distorted octahedral geometry. In the crystal, the cations, anions, 4-hydroxy-3-methoxybenzaldehyde and water molecules of crystallization are linked by classical O—H...O hydrogen bonds and weak C—H...O and C—H...Cl hydrogen bonds into a three-dimensional supramolecular architecture. The crystal packing is further stabilized by weak C—H...π interactions involving pyrrole and benzene rings. π–π stacking between parallel benzene rings of adjacent 4-hydroxy-3-methoxybenzaldehyde molecules is also observed, the centroid–centroid distance being 3.8003 (13) Å. The three F atoms of the anion are disordered over two sets of sites, with a refined occupancy ratio 0.527 (12):0.473 (12). The O atom of one water molecule of crystallization is also disordered over two positions in an occupancy ratio of 0.68 (5):0.32 (5).

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