scholarly journals Crystal structure of bis[cis-diaquabis(phenanthroline)cobalt(II)] bis(citrato)germanate(IV) dinitrate

Author(s):  
Olha Buchko ◽  
Viktoriya Dyakonenko ◽  
Elena Martsinko ◽  
Elena Chebanenko

The asymmetric unit of the title compound, [Co(C12H8N2)2(H2O)2]2[Ge(C6H5O7)2](NO3)2, features two complex [(C12H8N2)2(H2O)2Co]2+ cations, two NO3 − anions as well as one centrosymmetric [(C6H5O7)2Ge]2− anion. Two HCit ligands (Cit = citrate, C6H4O7) each coordinate via three different oxygen atoms (hydroxylate, α-carboxylate, β-carboxylate) to the Ge atom, forming a slightly distorted octahedron. The coordination polyhedron of the Co atom is also octahedral, formed by coordination of four nitrogen atoms from two phenanthroline molecules and two water oxygen atoms. In the crystal, the cations and anions are linked by hydrogen bonds and form layers parallel to the bc plane. The structure exhibits disorder of the NO3 − anion [disorder ratio 0.688 (9) to 0.312 (9)]. There are also highly disordered solvent molecules (presumably water and/or ethanol) in the crystal structure; explicit refinement of these molecules was not possible, and the content of the voids was instead taken into account using reverse Fourier transform methods [SQUEEZE procedure in PLATON; Spek (2015). Acta Cryst. C71, 9–18]. The given chemical formula and other crystal data do not take into account the unknown solvent molecule(s).

IUCrData ◽  
2018 ◽  
Vol 3 (12) ◽  
Author(s):  
Masatomo Makino ◽  
Kazuhiko Matsubayashi ◽  
Yukiko Kodama-Oda ◽  
Naoto Imawaka ◽  
Nobuhiro Mizuno ◽  
...  

The supramolecular features in the title compound, [2,3,9,10,16,17,23,24-octakis(2,6-dimethylphenoxy)phthalocyaninato]zinc(II) bis[(5,10,15,20-tetraphenylporphyrinato)zinc(II)] chloroform tetrasolvate, [Zn(C96H80N8O8)][Zn(C44H28N4)]2·4CHCl3 or [Zn(Pc)][Zn(TPP)]2·4CHCl3, result from a self-assembly of one molecule of [2,3,9,10,16,17,23,24-octakis(2,6-dimethylphenoxy)phthalocyaninato]zinc(II) (ZnPc) and two molecules of (5,10,15,20-tetraphenylporphyrinato)zinc(II) (ZnTPP). One half ZnPc, one ZnTPP and two chloroform molecules define the asymmetric unit, with the zinc(II) cation of ZnPc situated on an inversion centre. In the supramolecule, the central ZnPc moiety is sandwiched between two ZnTPPs moieties in a co-facial conformation with a π-conjugated system, leading to a nearly H-type aggregate with a distance of 3.4967 (5) Å between adjacent zinc sites. The ZnTPP units are slightly glided away to form a partial ecliptic arrangement. Each phenyl group of the TPP ligand is anchored above the N atom of the isoindole linker of the Pc ligand through weak C—H...N hydrogen bonds and is held into the crevice between the two dimethylphenoxy groups of phthalocyanine via van der Waals interactions. In the crystal, chloroform solvent molecules are situated between the supramolecules. There is another solvent-accessible void of 341 (2) Å3. The contribution of disordered solvent molecules situated in this void was removed from the diffraction data using SQUEEZE in PLATON [Spek (2015). Acta Cryst. C71, 9–18]. The given chemical formula and other crystal data do not consider this unknown solvent molecule(s).


2018 ◽  
Vol 74 (10) ◽  
pp. 1467-1470 ◽  
Author(s):  
Robert D. Sanner ◽  
Victor G. Young

The crystal structures of bis{3,5-difluoro-2-[4-(2,4,6-trimethylphenyl)pyridin-2-yl]phenyl-κ2 N,C 1}(picolinato-κ2 N,O)iridium(III), [Ir(C20H16F2N)2(C6H4NO2)], 1, and bis[2-(4-tert-butylpyridin-2-yl)-3,5-difluorophenyl-κ2 N,C 1](picolinato-κ2 N,O)iridium(III), [Ir(C15H14F2N)2(C6H4NO2)], 2, are presented herein. These phosphorescent cyclometallated iridium(III) compounds have been structurally investigated in order to better understand the nature of their blue-shifted emssions while maintaining high quantum yields. Compound 1 exhibits substantial twisting of the mesitylene rings out of the plane of the attached pyridine ring, with dihedral angles of 67.0 (1) and 78.7 (1)° between the best mean planes. For both compounds, the contribution of disordered solvent molecule(s) was removed using the SQUEEZE [Spek (2015). Acta Cryst. C71, 9–18] routine in PLATON [Spek (2015). Acta Cryst. C71, 9–18]. These solvent molecules are not considered in the given chemical formula and other crystal data.


2018 ◽  
Vol 74 (10) ◽  
pp. 1439-1443
Author(s):  
Sureemas Meksawangwong ◽  
Suwadee Jiajaroen ◽  
Kittipong Chainok ◽  
Waraporn Pinyo ◽  
Filip Kielar

The asymmetric unit of the title compound, fac-[Ir(C11H8N)2(C18H24N2)]Cl or fac-[Ir(ppy)2(Hppy-NC6)]Cl, contains two [Ir(ppy)2(ppy-NC6)](H+) cations, two Cl− anions and disordered solvent. In each complex molecule, the IrIII ion is coordinated by two C,N-bidentate 2-(pyridin-2-yl)phenyl ligands and one C,N-bidentate N-[4-(pyridin-2-yl)benzyl]hexan-1-aminium ligand, leading to a distorted fac-octahedral coordination environment. In the crystal, the molecules are linked by N—H...Cl, C—H...π and π–π interactions, forming a three-dimensional supramolecular structure. The hexyl group of one molecule is disordered over two orientations with a refined occupancy ratio of 0.412 (13):0.588 (13). The acetone and hexane solvent molecules were found to be highly disordered and their contribution to the scattering was masked using the solvent-masking routine smtbx.mask in OLEX2 [Rees et al. (2005). Acta Cryst. D61, 1299–1301]. These solvent molecules are not considered in the given chemical formula and other crystal data.


Author(s):  
Hugo Santalla ◽  
Saray Argibay

In the title cholesterol analogue, [systematic name: (3S,8S,9S,10R,13S,14S,17R)-17-{(S)-1-[4-(2-hydroxypropan-2-yl)-1H-1,2,3-triazol-1-yl]-6-methylheptan-2-yl}-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol] C32H53N3O2, a new chain, including an intermediate triazole and a tertiary hydroxyl group in the terminal position, has been added at position 20 inducing a change in its stereochemistry. In the crystal, molecules are linked by O—H...O and O—H...N hydrogen bonds, forming layers lying parallel to (-201) and enclosing R 4 4(36) ring motifs. The isopropyl group is disordered about two positions with a refined occupancy ratio of 0.763 (5):0.237 (5). A region of disordered electron density was corrected for using the SQUEEZE routine in PLATON (Spek (2015). Acta Cryst. C71, 9–18). The given chemical formula and other crystal data do not take into account the unknown solvent molecule(s).


IUCrData ◽  
2018 ◽  
Vol 3 (6) ◽  
Author(s):  
Martha Höhne ◽  
Marc Gongoll ◽  
Anke Spannenberg ◽  
Bernd H. Müller ◽  
Normen Peulecke ◽  
...  

The title complex, [Mo(C24H30N2P2)(CO)4], contains a molybdenum centre bearing a P,P′-cis-chelating Ph2PN( i Pr)P(Ph)NH( i Pr) and four carbonyl ligands in a distorted octahedral coordination geometry. This results in a nearly planar four-membered metallacycle. In the crystal, molecules are linked by N—H...O and C—H...O hydrogen bonds to form layers parallel to the ac plane. For the final refinement, the contributions of disordered solvent molecules were removed from the diffraction data with SQUEEZE in PLATON [Spek (2015). Acta Cryst. C71, 9–18]. The given chemical formula and other crystal data do not take into account the unknown solvent molecule(s).


IUCrData ◽  
2020 ◽  
Vol 5 (4) ◽  
Author(s):  
Shintaro Kodama ◽  
Shota Kondo ◽  
Akihiro Nomoto ◽  
Akiya Ogawa

The title heptanuclear alkoxido(oxido)vanadium(V) oxide cluster complex, [V7(C10H19O)O17(C18H24N2)3]·CH3CN, was obtained by the reaction of [V8O20(C18H24N2)4] with 4-tert-butylcyclohexanol (mixture of cis and trans) in a mixed CHCl3/CH3CN solvent. The complex has a V7O18N6 core with approximately C s symmetry, which is composed of two VO4 tetrahedra, two VO6 octahedra and three VO4N2 octahedra. In the crystal, these complexes are linked together by weak intermolecular C—H...O hydrogen bonds between the 4,4′-di-tert-butyl-2,2′-bipyridine ligand and the V7O18N6 core, forming a one-dimensional network along the c-axis direction. Besides the complex, the asymmetric unit contains one CH3CN solvent molecule. The contribution of other disordered solvent molecules to the scattering was removed using the SQUEEZE option in PLATON [Spek (2015). Acta Cryst. C71, 9–18]. The unknown solvent molecules are not considered in the chemical formula and other crystal data.


Author(s):  
Joel T. Mague ◽  
Mehmet Akkurt ◽  
Shaaban K. Mohamed ◽  
Etify A. Bakhite ◽  
Mustafa R. Albayati

In the title molecule, C27H25N3O3S·H2O, the dihedral angle between the planes of the thienyl ring and the pendantp-tolyl group is 39.25 (6)°, while that between the pyridine ring and the pendant phenyl ring is 44.37 (6)°. In addition, there is a slight twist in the bicyclic core, with a dihedral angle of 2.39 (4)° between the thienyl and pyridine rings. The conformation of the carbamoyl moiety is partially determined by an intramolecular N—H...O hydrogen bond. In the crystal, complementary N—H...O hydrogen bonds form dimers which are then associated into chains parallel to thecaxis through O—H...N hydrogen bonds involving the water molecule of crystallization. Electron density associated with an additional solvent molecule of partial occupancy and disordered about a twofold axis was removed with the SQUEEZE procedure inPLATON[Spek (2015).Acta Cryst.C71, 9–18]. The given chemical formula and other crystal data do not take into account the unknown solvent molecule(s).


IUCrData ◽  
2016 ◽  
Vol 1 (11) ◽  
Author(s):  
Da-Jun Wu ◽  
Bin Fang

In the complex anion of the title salt, (C16H19N2)[Gd(C8H4F3S)4], the GaIIIcation isO,O′-chelated by four anionic 4,4,4-trifluoro-3-oxo-1-(thiophen-2-yl)but-1-en-1-olate ligands in a distorted square-antiprismatic geometry; the 4-[4-(dimethylamino)styryl]-1-methylpyridin-1-ium cation is nearly planar, with a dihedral angle of 9.6 (5)° between the planes of the pyridine and benzene rings. In the crystal, the cations are linked with the complex anionsviaweak C—H...F and C—H...π interactions. Two of the four independent thiophene rings are disordered over two sites; occupancies were refined to 0.662 (10):0.338 (10). The solvent water molecules are highly disordered in a solvent-accessible void of 54 (3) Å3; the diffuse electron densities were removed from the data set using SQUEEZE [Spek (2015).Acta Cryst. C71, 9–16]. These solvent molecules are not considered in the given chemical formula and other crystal data.


Author(s):  
Kirill B. Polyanskii ◽  
Kseniia A. Alekseeva ◽  
Pavel A. Kumandin ◽  
Zeliha Atioğlu ◽  
Mehmet Akkurt ◽  
...  

The title compound, [RuCl2(C21H26N2)(C11H15N)], is an example of a new generation ofN,N-dialkyl metallocomplex ruthenium catalysts with an N→Ru coordination bond as part of a six-membered chelate ring. The Ru atom has an Addison τ parameter of 0.234, which indicates a geometry intermediate between square-based pyramidal and trigonal–bipyramidal. The complex shows the usualtransarrangement of the two chloride ligands, with Ru—Cl bond lengths of 2.3397 (8) and 2.3476 (8) Å, and a Cl—Ru— Cl angle of 157.47 (3)°. The crystal structure features C—H...Cl, C—H...π and π–π stacking interactions. The solvent molecules were found to be highly disordered and their contribution to the scattering was removed with the SQUEEZE procedure inPLATON[Spek (2015).Acta Cryst.C71, 9–18], which indicated a solvent cavity of volume 1096 Å3containing approximately 419 electrons. These solvent molecules are not considered in the given chemical formula and other crystal data.


IUCrData ◽  
2021 ◽  
Vol 6 (2) ◽  
Author(s):  
G. Vinotha ◽  
T. V. Sundar ◽  
N. Sharmila

In the title compound, C30H31NO3S2, the piperidine ring adopts a distorted chair conformation. The thiophene rings have twisted conformations about the C—C bonds. The mean plane of the piperidine ring makes a near orthogonal conformation with the toluene ring. Two of the phenyl rings in the structure are positionally disordered over two sets of sites with occupancies of 0.56 (2)/0.44 (2) and 0.672 (16)/0.328 (16). A region of disordered electron density was corrected for using the SQUEEZE [Spek (2015). Acta Cryst. C71, 9–18] routine in PLATON. The given chemical formula and other crystal data do not take into account the unknown solvent molecule. In the crystal, O—H...O hydrogen bonds are observed along with intramolecular S...H, O...H, C...H and H...H contacts.


Sign in / Sign up

Export Citation Format

Share Document