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1.  (2,2′-Bipyridine)(pyridine-2,6-dicarboxyl­ato)oxidovanadium(IV) ethanol monosolvate 
In the title compound, [V(C7H3NO4)O(C10H8N2)]·C2H5OH, the VIV atom exhibits a distorted octa­hedral coordination environment formed by two pyridyl N atoms of 2,2′-bipyridine (bpy), the vanadyl O atom, and two carboxyl­ate O atoms and one pyridyl N atom of the tridentate pyridine-2,6-dicarboxyl­ate (pydc2−) ligand. The pyridyl N atom of the pydc2− anion and one pyridyl N atom of bpy occupy the axial positions. O—H⋯O hydrogen bonds involving the ethanol solvent mol­ecule as donor and a carboxyl­ate O atom as acceptor atoms, as well as C—H⋯O hydrogen bonds, together with π–π stacking inter­actions between adjacent aromatic rings (average centroid–centroid distance = 3.577 Å), seem to be effective in the stabilization of the crystal packing, resulting in the formation of a three-dimensional structure.
doi:10.1107/S1600536811002376
PMCID: PMC3051467  PMID: 21522903
2.  Chlorido­bis­(1,10-phenanthroline-κ2 N,N′)copper(II) chlorido­(1,10-phen­anthroline-κ2 N,N′)(pyridine-2,6-di­carboxyl­ato-κ3 O 2,N,O 6)manganate(II) methanol monosolvate 
The title complex, [CuCl(C12H8N2)2][Mn(C7H3NO4)Cl(C12H8N2)]·CH3OH, consists of discrete [CuCl(phen)2]+ cations (phen is 1,10-phenanthroline), [MnCl(pydc)(phen)]− anions (H2pydc is 2,6-pyridine-2,6-di­carb­oxy­lic acid) and one methanol solvent mol­ecule of crystallization per asymmetric unit. It should be noted, that a solvent-masking procedure as implemented in OLEX2 [Dolomanov et al. (2009). J. Appl. Cryst. 42, 339–341 ▶] was used to remove the electronic contribution from one disordered solvent molecule, presumably methanol. Only the atoms used in the refined model are reported in chemical formula and related values. The CuII ion is five-coordinated by two phenanthroline ligands and one chloride ion in a distorted trigonal–bipyramidal geometry. The dihedral angle between the phen ligands is 65.21 (5)°. The MnII ion is six-coordinated by one Cl atom, two N atoms from a phen ligand, as well one N atom and two O atoms from pydc in a distorted octa­hedral coordination geometry, with cis angles ranging from 72.00 (8) to 122.07 (8)° and trans angles ranging from 143.98 (8) to 163.15 (6)°. In the crystal, C—H⋯O, O—H⋯O and C—H⋯Cl hydrogen bonds, cation–anion π–π inter­actions between the phen ring systems with centroid–centroid distances in the range 3.881 (34)–4.123 (36) Å, as well as cation–cation, anion–anion π–π inter­actions between the phen rings with centroid–centroid distances in the range 3.763 (4)–3.99 (5) Å and pydc rings with centroid–centroid distances 3.52 (5) Å link the various components.
doi:10.1107/S1600536814006369
PMCID: PMC3998582  PMID: 24826106
3.  (2,2′-Bipyridine-4,4′-dicarb­oxy­lic acid-κ2 N,N′)chlorido(2,2′:6′,2′′-terpyridyl-κ3 N,N′,N′′)ruthenium(II) perchlorate ethanol monosolvate monohydrate 
In the title compound, [RuCl(C15H11N3)(C12H8N2O4)]ClO4·C2H5OH·H2O, the geometry of the ClN5 coordination set around the RuII atom is close to octa­hedral, but distorted on account of the limited bite angles of the polypyridyl ligands. The complexes are linked by O—H⋯O hydrogen bonds between the carboxyl groups and the crystal lattice water mol­ecules into chains along [110]. Face-to-face stacking inter­actions are formed between terpyridine ligands, with inter­planar separations of 3.66 (1) and 3.42 (1) Å, and between bipyridine-4,4′-dicarb­oxy­lic acid ligands, with inter­planar separations of 3.65 (1) and 3.72 (1) Å. Three O atoms of the perchlorate ion are each disordered equally over two positions. The hy­droxy group of the ethanol mol­ecule is also disordered over two sites with refined occupancies of 0.794 (9) and 0.206 (9).
doi:10.1107/S1600536811054195
PMCID: PMC3254339  PMID: 22259372
4.  Bis(8-hy­droxy-2-methyl­quinolinium) bis­(pyridine-2,6-dicarboxyl­ato)­nickelate(II) methanol monosolvate monohydrate 
In the title compound, (C10H10NO)2[Ni(C7H3NO4)2]·CH3OH·H2O, the coordination geometry of the NiII atom can be described as distorted octa­hedral. In the crystal, noncovalent inter­actions play an important role in the stabilization of the structure, involving O—H⋯O, N—H⋯O and weak C—H⋯O hydrogen bonds and π–π stacking inter­actions between the pyridine rings of the pyridine-2,6-dicarboxyl­ate ligands [centroid–centroid distance = 3.7138 (15) Å] and between the 8-hy­droxy-2-methyl­quinolinium cations [centroid–centroid distances = 3.6737 (15), 3.4434 (14), 3.6743 (15), 3.7541 (16), 3.5020 (15) and 3.7947 (15) Å].
doi:10.1107/S1600536811021015
PMCID: PMC3152105  PMID: 21836882
5.  Bis(8-hy­droxy-2-methyl­quinolinium) bis­(pyridine-2,6-dicarboxyl­ato)cuprate(II) methanol monosolvate monohydrate 
The title compound, (C10H10NO)2[Cu(C7H3NO4)2]·CH3OH·H2O was prepared by the reaction of copper(II) nitrate hexa­hydrate, 8-hy­droxy-2-methyl­quinoline, and pyridine-2,6-dicarb­oxy­lic acid in a 1:2:2 molar ratio in an aqueous solution. The geometry of the resulting CuN2O4 coordination can be described as distorted octa­hedral. In the crystal, there are several inter­molecular O—H⋯O, N—H⋯O and C—H⋯O hydrogen bonds. An intra­molecular N—H⋯O hydrogen bond occurs in one of the cations. Considerable π–π stacking inter­actions are also observed between the aromatic rings of the cations, with centroid–centroid distances of 3.4567 (13), 3.5342 (14), 3.6941 (14) and 3.4568 (13) Å. These non-covalent inter­actions connect the components, forming a three-dimensional supra­molecular structure.
doi:10.1107/S160053681100674X
PMCID: PMC3052026  PMID: 21522300
6.  Bis[chloridobis(1,10-phenanthroline)copper(II)] penta­cyanido­nitro­soferrate(II) di­methyl­formamide monosolvate 
The title complex [CuCl(C12H8N2)2]2[Fe(CN)5(NO)]·C3H7NO, consists of discrete [Cu(phen)2Cl]+ cations (phen is 1,10-phenanthroline), [Fe(CN)5NO]2− anions and one di­methyl­formamide (DMF) solvent mol­ecule of crystallization per asymmetric unit. The CuII atom is coordinated by two phenanthroline ligands and one chloride ion in a distorted trigonal–bipyramidal geometry. The dihedral angle between the phen ligands is 77.92 (7)°. The cation charge is balanced by a disordered nitro­prusside counter-anion with the FeII atom located on an inversion center with a slightly distorted octa­hedral coordination geometry. In the crystal, weak C—H⋯N and C—H⋯Cl hydrogen bonds connect anions and cations into a two-dimensional network parallel to (100). In addition, π–π stacking inter­actions are observed with centroid–centroid distances in the range 3.565 (2)–3.760 (3)Å. The di­methyl­formamide solvent mol­ecule was refined as disordered about an inversion center.
doi:10.1107/S1600536813015547
PMCID: PMC3772424  PMID: 24046567
7.  Chloridobis(dimethyl­glyoximato-κ2 N,N′)(ethyl pyridine-4-carboxyl­ate-κN)cobalt(III) chloro­form monosolvate 
The title compound, [Co(C4H7N2O2)2Cl(C8H9NO2)]·CHCl3, was synthesized as a model complex of vitamin B12. The CoIII cation displays an approximately octa­hedral coordination environment, being displaced by 0.0240 (15) Å from the mean plane of the four N atoms of the equatorial plane. The O—H distances in the dimethyl­glyoximate hy­droxy groups are 0.89 (6) and 1.14 (6) Å; such long O—H bonds are very common in cobaloxime derivatives. Weak classical O—H⋯N and non-classical C—H⋯Cl hydrogen-bonding interactions further consolidate the crystal packing.
doi:10.1107/S1600536812002449
PMCID: PMC3274923  PMID: 22346870
8.  trans-Chloridobis(4-methyl­pyridine-κN)(4,4′,4′′-tri-tert-butyl-2,2′:6′,2′′-terpyridine-κ3 N,N′,N′′)ruthenium(II) hexa­fluoridophosphate acetone monosolvate 
The title compound, [RuCl(C6H7N)2(C27H35N3)]PF6·C3H6O, was obtained unintentionally as the product of the reaction of 1,1′-methyl­enebis(4-methyl­pyridinium) hexa­fluoriso­phos­phate and RuCl3(tpy*) (tpy* is 4,4′,4′′-tri-tert-butyl-2,2′:6′,2′′-terpyridine) in the presence of triethyl­amine and LiCl. The mol­ecular structure of the complex displays an octa­hedral geometry around the RuII ion and the unit cell contains an acetone solvent mol­ecule and one orientationally disordered PF6 − anion (occupancy ratio 0.75:0.25) which is hydrogen bonded to two H atoms of the tpy* ligand of the nearest [RuCl(pic)2(tpy*)]+ cation (pic is 4-methyl­pyridine). One of the tert-butyl groups of the tpy* ligand is also disordered over two sets of sites in a 0.75:0.25 ratio.
doi:10.1107/S1600536812005594
PMCID: PMC3297252  PMID: 22412442
9.  trans-Bis(1,3-diphenyl­propane-1,3-dionato)(methanol)oxidovanadium(IV) methanol disolvate 
In the title compound, [V(C15H11O2)2O(CH3OH)]·2CH3OH, the VIV atom is coordinated by two 1,3-diphenyl­propane-1,3-dionate ligands and an oxide ligand in an axial position. The sixth position is occupied by the O atom of a methanol group bonded trans to the oxide atom. The octa­hedral geometry is significantly distorted, with the VIV atom lying 0.330 (3) Å above the equatorial plane formed by the O atoms of the two β-diketonate ligands. In the crystal, O—H⋯O hydrogen bonds between the coordinating methanol group in the complex and the two methanol solvent mol­ecules lead to the formation of polymeric chains along the c-axis direction. Weak C—H⋯O contacts are also observed.
doi:10.1107/S1600536812044686
PMCID: PMC3588710  PMID: 23468675
10.  (4-Methyl­benzohydrazidato-κ2 N′,O)[2-(4-methyl­benzoyl­hydrazinyl­idene-κ2 N,O)-3-phenyl­propionato(2−)]oxido­vanadium(V) methanol monosolvate 
The VV atom in the title compound, [V(C8H9N2O)(C17H14N2O3)O]·CH3OH, is N,O-chelated by the benzoyl­hydrazidate anion and O,N,O′-chelated by the (benzoyl­hydrazono)propionate dianion. The octa­hedral trans-N2O4 coordination geometry is completed by the vanadyl O atom. Two mononuclear complexes and two solvent mol­ecules are linked by O—H⋯O and O—H⋯N hydrogen bonds, generating a centrosymmetric aggregate.
doi:10.1107/S1600536810011372
PMCID: PMC2983918  PMID: 21580561
11.  (4-Chloro­benzohydrazidato-κ2 N′,O)[2-(4-chloro­benzoyl­hydrazinyl­idene-κ2 N 1,O)-3-phenyl­propionato(2−)-κO 1]oxidovanadium(V) methanol monosolvate 
The VV atom in the title compound, [V(C7H6ClN2O)(C16H11ClN2O3)O]·CH3OH, is N,O-chelated by the benzoyl­hydrazidate anion and O,N,O′-chelated by the (benzoyl­hydrazinyl­idene)propionate dianion. The distorted octa­hedral trans-N2O4 coordination geometry is completed by the vanadyl O atom. The mononuclear and solvent mol­ecules are linked by N—H⋯O and O—H⋯O hydrogen bonds about a center of inversion, generating a dimer.
doi:10.1107/S1600536810045678
PMCID: PMC3011505  PMID: 21589249
12.  Aqua­chloridobis(1,10-phenanthroline-κ2 N,N′)zinc(II) chloride N,N-dimethyl­formamide solvate 
The Zn atom in the title salt, [ZnCl(C12H8N2)2(H2O)]Cl·C3H7NO, is chelated by two phenanthroline mol­ecules and is bonded to one chloride ion and one water mol­ecule, resulting in a ZnN4ClO octa­hedral coordination environment with the Cl and O atoms in a cis conformation. The cations and anions are linked by O—H⋯Cl hydrogen bonds across a center of inversion, forming a hydrogen-bonded dimeric association. The dimethyl­formamide solvent mol­ecule is disordered over two orientations in a 0.56 (1):0.44 (1) ratio.
doi:10.1107/S1600536808002237
PMCID: PMC2960305  PMID: 21201367
13.  catena-Poly[[[aqua­(di-2-pyridyl­amine-κ2 N 2,N 2′)manganese(II)]-μ-5-ferrocenyl­benzene-1,3-dicarboxyl­ato-κ3 O 1,O 1′:O 3] methanol monosolvate monohydrate] 
In the title coordination polymer, {[FeMn(C5H5)(C13H7O4)(C10H9N3)(H2O)]·CH3OH·H2O}n, the MnII ion has a distorted octa­hedral coordination geometry and is ligated by two N atoms from two di-2-pyridyl­amine mol­ecules, three O atoms from two 5-ferrocenyl­benzene-1,3-dicarboxyl­ate anions and one O atom from a coordinated water mol­ecule. The Mn—O distances range from 2.151 (2) to 2.5093 (19) Å, while the Mn—N distances are 2.226 (2) and 2.248 (2) Å. Each 5-ferrocenyl­benzene-1,5-dicarboxyl­ate anion links to two MnII ions, resulting in a chain along the b axis. A three-dimensional network of N—H⋯O and O—H⋯O hydrogen bonds helps to stabilize the crystal packing.
doi:10.1107/S1600536811022781
PMCID: PMC3152059  PMID: 21836962
14.  Trichlorido(4,4′-dimethyl-2,2′-bipyridine-κ2 N,N′)(methanol-κO)indium(III) methanol monosolvate 
In the title compound, [InCl3(C12H12N2)(CH3OH)]·CH3OH, the InIII atom is six-coordinated in a distorted octa­hedral geometry by two N atoms from a chelating 4,4′-dimethyl-2,2′-bipyridine ligand, one O atom from a methanol mol­ecule and three Cl atoms. In the crystal, inter­molecular O—H⋯O and O—H⋯Cl hydrogen bonds link the complex and solvent methanol mol­ecules. Intra­molecular C—H⋯Cl hydrogen bonds are also present in the complex.
doi:10.1107/S1600536812035490
PMCID: PMC3435608  PMID: 22969481
15.  Aqua­chloridobis(2-{[3-(morpholin-4-yl)prop­yl]imino­meth­yl}phenolato)manganese(III) monohydrate 
In the title compound, [Mn(C14H19N2O2)2Cl(H2O)]·H2O, the MnIII atom is N,O-chelated by two monoanionic Schiff bases, forming two six-membered chelate rings. One Cl atom and one water mol­ecule in trans positions complete a distorted octa­hedral geometry around the metal atom. In the crystal, the complex mol­ecules and the uncoordinated water mol­ecules are connected via O—H⋯N, O—H⋯O and O—H⋯Cl hydrogen bonds into layers parallel to the ac plane and these are consolidated by C—H⋯π inter­actions. The layers are further linked into a three-dimensional network through C—H⋯O inter­actions.
doi:10.1107/S1600536811026493
PMCID: PMC3212133  PMID: 22090835
16.  Bis(2,2′-bipyridine-κ2 N,N′)dichlorido­platinum(IV) dichloride monohydrate 
In the title complex, [PtCl2(C10H8N2)2]Cl2·H2O, the Pt4+ ion is six-coordinated in a distorted octa­hedral environment by four N atoms from the two 2,2′-bipyridine ligands and two Cl atoms. As a result of the different trans influences of the N and Cl atoms, the Pt—N bonds trans to the Cl atom are slightly longer than those trans to the N atom. The compound displays inter­molecular hydrogen bonding between the water mol­ecule and the Cl anions. There are inter­molecular π–π inter­actions between adjacent pyridine rings, with a centroid–centroid distance of 3.962 Å.
doi:10.1107/S1600536809000725
PMCID: PMC2968269  PMID: 21581784
17.  [N′-(3,5-Diiodo-2-oxidobenzyl­idene-κO)-4-methyl­benzohydrazidato-κ2 N′,O](methanol-κO)(methano­lato-κO)oxidovanadium(V) 
In the title mol­ecule, [V(C15H10I2N2O2)(CH3O)O(CH3OH)], the VV atom is coordinated by one N and two O atoms from an N′-(3,5-diiodo-2-oxidobenzyl­idene-κO)-4-methyl­benzo­hydra­zidate (L) ligand, one oxide O atom, one methano­late [V—O = 1.761 (3) Å] and one methanol [V—O = 2.383 (4) Å] O atom in a distorted octa­hedral geometry. In the L ligand, the two benzene rings are nearly parallel, forming a dihedral angle of 2.0 (1)°. In the crystal, inter­molecular O—H⋯N hydrogen bonds link pairs of mol­ecules into centrosymmetric dimers which exhibit π–π inter­actions between the aromatic rings [centroid–centroid distance = 3.677 (5) Å].
doi:10.1107/S1600536811010385
PMCID: PMC3100050  PMID: 21753994
18.  Poly[[aqua­(μ2-4,4′-bipyridine-κ2 N:N′)[μ3-3-bromo-2-(carboxyl­atometh­yl)­benzoato-κ3 O 1:O 1′:O 2]cadmium] monohydrate] 
In the title compound, {[Cd(C9H5BrO4)(C10H8N2)(H2O)]·H2O}n, the CdII atom has a distorted octa­hedral coordination geometry. Two N atoms from two 4,4′-bipyridine (bipy) ligands occupy the axial positions, while the equatorial positions are furnished by three carboxyl­ate O atoms from three 3-bromo-2-(carboxyl­atometh­yl)benzoate (bcb) ligands and one O atom from a water mol­ecule. The bipy and bcb ligands link the CdII atoms into a three-dimensional network. O—H⋯O hydrogen bonds and π–π inter­actions between the pyridine and benzene rings [centroid–centroid distance = 3.736 (4) Å] are present in the crystal.
doi:10.1107/S1600536812031297
PMCID: PMC3414131  PMID: 22904738
19.  Chloridobis(dimethyl­glyoximato-κ2 N,N′)(4-methyl­pyridine-κN)cobalt(III) hemihydrate 
In the title complex, [Co(C4H7N2O2)2Cl(C6H7N)]·0.5H2O, the central CoIII ion, chelated by four N atoms of the two bidenate glyoximate ligands, exhibits a slightly distorted octa­hedral geometry. The axial positions are occupied by a chloride ion and the 4-methyl­pyridine N atom. Inter­molecular O—H⋯O hydrogen bonds link the mol­ecules in the crystal via the water mol­ecules, while the glyoximate ligands exhibit intra­molecular O—H⋯O hydrogen bonds.
doi:10.1107/S1600536811020162
PMCID: PMC3151788  PMID: 21836853
20.  Di-μ-oxido-bis­({2-[(R,R)-(−)-(2-amino­cyclo­hexyl)imino­meth­yl]-4-nitro­phenolato-κ3 N,N′,O}oxidovanadium(V)) dimethyl sulfoxide disolvate 
The title compound, [V2(C13H16N3O3)2O4]·2C2H6OS, is a centrosymmetric dimeric complex solvated by two dimethyl sulfoxide mol­ecules. Each VV atom is six-coordinated by one oxide group, two N atoms and one O atom from the tridentate Schiff base ligand, and by two additional bridging O atoms in a distorted octa­hedral coordination geometry. Three atoms of the cyclo­hexane ring are each disordered over two sites, with occupancy factors of 0.501 (10) and 0.499 (10). C—H⋯O and N—H⋯O hydrogen bonds link the dimers and solvent mol­ecules into a supra­molecular network.
doi:10.1107/S1600536808038762
PMCID: PMC2967873  PMID: 21581499
21.  Bis[μ2-1-(2-carb­oxy­benzo­yl)thio­semi­carbazide(3−)]hexa­pyridine­trinickel(II) pyridine monosolvate monohydrate 
The reaction of Ni(OAc)2·4H2O with 1-(2-carb­oxy­benzo­yl)thio­semicarbazide (H3 L) produces the title complex, [Ni3(C9H6N3O3S)2(C5H5N)6]·C5H5N·2H2O, which contains an linear array of three NiII atoms. The asymmetric unit contains half of the complex mol­ecule, a water mol­ecule and a half-mol­ecule of pyridine. The central NiII atom, located on a crystallographic inversion centre, has an octa­hedral N4O2 environment. The other two NiII atoms have a square-pyramidal N3OS environment, each bridged to the central NiII atom via the L 3− group. The carboxyl­ate groups coordinate to the metal atoms in a monodentate fashion. The water mol­ecule is linked to the complex mol­ecule via O—H⋯O hydrogen bonds. The mol­ecules further assemble into a one-dimensional network parallel to [001] via inter­molecular N—H⋯O hydrogen bonds.
doi:10.1107/S1600536811048367
PMCID: PMC3238709  PMID: 22199586
22.  μ-Acetato-μ-(5-chloro-2-{1,3-bis[2-(5-chloro-2-oxidobenzylideneamino)ethyl]imidazolidin-2-yl}phenolato)-bis[methanolnickel(II)] methanol monosolvate monohydrate 
The crystal structure shows that the title compound, [Ni2(CH3CO2)(C27H24Cl3N4O3)(CH4O)2]·CH3OH·H2O, con­tains [Ni2 L(OAc)(CH3OH)2] mol­ecules in the unit cell {H3 L = 5-chloro-2-{1,3-bis[2-(5-chloro-2-oxidobenzylideneimino)-ethyl]imidazolidin-2-yl}phenolate} with water and methanol as solvates. The title compound is a neutral dinuclear compound, in which the L 3− Schiff base acts as a hepta­dentate ligand, using each one of its N2O compartments to coordinate a nickel atom. The acetate anion bridges the two nickel atoms via one O while the distorted octahedral coordination sphere for each nickel atom is completed by a coordinated methanol ligand. One of the coordinated methanol ligands is involved in an intra­molecular hydrogen bond to the uncoordinated O atom of the bridging acetate ligand while the other forms a hydrogen bond with the methanol solvate. The solvate water mol­ecule forms strong hydrogen bonds to both terminal phenolato O atoms. The methanol solvate mol­ecule also forms a hydrogen bond with the water solvate mol­ecule.
doi:10.1107/S1600536811032727
PMCID: PMC3200742  PMID: 22064868
23.  Dichlorido[tris­(1H-benzimidazol-2-ylmeth­yl)amine-κ4 N,N 3,N 3′,N 3′′]iron(III) chloride tetra­hydro­furan monosolvate monohydrate 
In the title compound, [FeCl2(C24H21N7)]Cl·C4H8O·H2O, the FeIII atom is coordinated by four N atoms of the polybenzimidazole ligand and two Cl atoms in a distorted octa­hedral environment. The cation, anion, the uncoordinated water mol­ecule and the THF solvent molecule are linked by hydrogen bonds into a three-dimensional network structure. The THF molecule is disordered with two sets of sites in a 0.58 (1):0.42 (2) ratio..
doi:10.1107/S1600536809023423
PMCID: PMC2969328  PMID: 21582746
24.  Poly[[diaqua­(μ-4,4′-bipyridine N,N′-di­oxide-κ2 O:O′)(μ-terephthalato-κ2 O 1:O 4)cobalt(II)] 4,4′-bipyridine N,N′-dioxide monosolvate] 
In the title compound, {[Co(C8H4O4)(C10H8N2O2)(H2O)2]·C10H8N2O2}n, the CoII atom, lying on an inversion center, is hexa­coordinated in a distorted octa­hedral geometry defined by two O atoms from two terephthalate (tp) ligands, two O atoms from two 4,4′-bipyridine N,N′-dioxide (bpydo) ligands and two water mol­ecules. The coordinated tp and bpydo ligands and uncoordinated bpydo mol­ecule all have an inversion center. The CoII atoms are connected by the tp and bpydo ligands into a layer parallel to (111). In the crystal, O—H⋯O hydrogen bonds link the uncoordinated bpydo mol­ecules and the layers into a three-dimensional supra­molecular structure. Intra­layer O—H⋯O hydrogen bonds and π–π inter­actions [centroid-to-centroid distances = 3.6643 (13) and 3.8048 (13) Å] are also observed.
doi:10.1107/S1600536812040056
PMCID: PMC3470175  PMID: 23125619
25.  Oxido{N-[(2-oxido-1-naphthyl-κO)methyl­idene]asparaginato-κ2 O 1,N 2}(1,10-phenanthroline-κ2 N,N′)vanadium(IV) N,N-dimethyl­formamide monosolvate 
The tridentate Schiff base ligand of the title complex, [V(C15H12N2O4)O(C12H8N2)]·C3H7NO, was derived from the condensation of 2-hy­droxy-1-naphthaldehyde and l-asparagine. The central VIV atom is six-coordinated by one oxide O atom, two N atoms from 1,10-phenanthroline and one N atom and two O atoms from the Schiff base ligand in a distorted octa­hedral geometry. In the crystal structure, inter­molecular N—H⋯O hydrogen bonds connect mol­ecules into centrosymmetric dimers. The C atoms of the dimethyl­formamide solvent mol­ecule are disordered over two sites with site-occupancy factors of 0.732 (13) and 0.268 (13).
doi:10.1107/S1600536810030126
PMCID: PMC3007907  PMID: 21588478

Results 1-25 (64839)