Crystal structure and luminescence of a terbium complex with <Emphasis Type="Italic">p</Emphasis>-methyl benzoate and 1,10-phenanthroline

A terbium p-methyl benzoate complex with 1,10-phenanthroline, [Tb(p-MBA)₃(Phen)]₂ (p-MBA = p-methyl benzoate and Phen = 1,10-phenanthroline), has been prepared and structurally characterized by X-ray diffraction. It crystallizes in triclinic system, space group P \(\bar 1\) with a = 12.8064(12), b = 13.3589(12), c = 19.8277(19) Å, α = 91.668(2)°, β = 97.775(2)°, γ = 106.312(2)°, C₇₂H₅₈N₄O₁₂Tb₂, M _r = 1489.06, V = 3217.6(5) ų, Z = 2, ρ _c = 1.537 g/cm³, μ(MoK _α) = 2.246 mm^?1, F(000) = 1488, the final R = 0.0622 and wR = 0.0962 for 14128 independent reflections with R _int = 0.0843. It consists of two types of crystallographically independent dimeric molecules [Tb(p-MBA)₃(Phen)]₂ noted as [Tb-1] and [Tb-2]. In the dimeric molecule [Tb-1], each Tb(III) is eight-coordinated with one Phen molecule, two bridging carboxylate groups, and two bidentate chelating carboxylate groups, while in [Tb-2] each Tb(III) is eight-coordinated with one Phen molecule, four bridging carboxylate groups, and one bidentate chelating carboxylate group. The title complex shows intense green luminescence under UV light at room temperature.     

Synthesis and structure of bis(1,2-diaminoethane) copper(II) bis(<Emphasis Type="Italic">o</Emphasis>-hydroxybenzoate) monohydrate and <Emphasis Type="Italic">trans</Emphasis>-diaquabis(1,2-diaminoethane)copper(II) bis(<Emphasis Type="Italic">o</Emphasis>-aminobenzoate)

X-ray structural analysis has been performed for two complex compounds: Cu(en)₂(o-HB)₂H₂O (I) (a = 16.873(4) Å, b = 8.713(2) Å, c = 14.803(3) Å, β = 91.15(2)°, V = 2175.8(8) ų, C2/c, Z = 4, R(F) = 0.0263, 1516 reflections with I > 3σ (I)) and [Cu(en)₂(OH₂)₂]²⁺(o-AB^?)₂ (II) (a = 7.488(5) Å, b = 22.122(8) Å, c = 7.856(5) Å, β = 118.77(2)°, V = 1140.7(11) ų, P2₁/n, Z = 2, R(F) = 0.0432, 1684 reflections with I > 3σ(I)) synthesized under identical conditions (en is ethylenediamine, o-HB is o-hydroxybenzoate, and o-AB is o-aminobenzoate). Although the compounds were assumed to have similar structures and the Cu-Lig bond lengths and the cis and trans angles are acceptable for an octahedral structure, the geometric parameters of o-HB suggest that the copper atom has a plane square environment.     

<Emphasis Type="Italic">Bis</Emphasis>(μ<Subscript>2</Subscript>-1-carboxybenzene-2-carboxylato)diaqua(monohydrogen phthalato)-(1,10-phenanthroline)samarium(III): Hydrothermal synthesis and crystal structure

A new lanthanide complex [{Sm(HPht)(Phen)(H₂O)₂}₂(μ-Pht)₂] (I), where Pht^2? is dianion of o-phthalic acid; HPht^? is monoanion of o-phthalic acid; Phen is 1,10-phenanthroline, has been synthesized, and its crystal structure was determined by X-ray crystallography. Complex I crystallizes in the triclinic system, space group P \(\bar 1\), with lattice parameters a = 10.1126(3), b = 10.7029(3), c = 11.9360(3) Å, α = 90.2260(10)°, β = 99.526(2)°, γ =100.9810(10)°, V = 1249.87(6) ų, Z = 2, ρ _c = 1.849 mg/m³, final R indices I > 2σ(I): R ₁ = 0.0202, wR ₂ = 0.0493; R indices (all data): R ₁ = 0.0220, wR ₂ = 0.0504.     

Preparation,crystal structure and mechanism of thermal decomposition of complex [Dy(<Emphasis Type="Italic">p</Emphasis>-MOBA)<Subscript>3</Subscript>Phen]<Subscript>2</Subscript>

1,10-Phenanthrolinetris(4-methoxybenzoate)dysprosium, Dy(p-MOBA)₃Phen (where p-MOBA = p-methoxybenzoate and Phen = 1,10-phenanthroline), (I) has been synthesized. The complex was characterized by various techniques including elemental analysis, UV, IR, XRD, molar conductance, and TG-DTG. The crystals consist of binuclear molecules and monoclinic, space group P2 ₁/n: a = 14.143(6) Å, b = 17.550(7) Å, c = 14.493(6) Å, β = 117.357(4)°, Z = 2, ρ _c = 1.655 g cm^?3, F(000) = 1588; R ₁ = 0.0176, wR ₂ = 0.0455. In the complex, each Dy³⁺ ion is nine-coordinate to one 1,10-phenanthroline molecule, one bidentate chelating carboxylate group, and four bridging carboxylate groups in which the carboxylate groups are bonded to the Dy³⁺ ions in three modes: bridging bidentate, bridging tridentate, and chelating bidentate. The thermal decomposition mechanism of I has been determined on the basis of thermal analysis. In addition, the lifetime equation at a weight-loss of 10% was deduced as lnτ = ?28.8361 + 19478.37/T by isothermal thermogravimetric analysis.     

Synthesis and crystal structure of the Tb(III) complex with 1,3-bis(1,3-dimethyl-1<Emphasis Type="Italic">H</Emphasis>-pyrazol-4-yl)-1,3-propanedione and 1,10-phenanthroline

The reaction of Tb(NO₃)₃ · 6H₂O with 1,3-bis(1,3-dimethyl-1H-pyrazol-4-yl)-1,3-propanedi-one (HL) and 1,10-phenanthroline (Phen) in the presence of NaOH in a water-alcohol medium afforded the neutral complex [Tb(L)₃(Phen)] (I). The unstable adduct [Tb(L)₃(Phen)] · 0.4 MeCN (II), whose structure is studied by X-ray diffraction analysis, is obtained from an acetonitrile solution. The crystals of compound II at 100 K are triclinic, a = 11.2508(13), b = 11.4246(14), c = 22.486(3) Å, α = 96.522(2)°, β = 91.578(2)°, γ = 110.073(2)°, V = 2690.3(5) ų, space group P \(\bar 1\), Z= 2, R = 0.0433. The complex is characterized by the green luminescence (λ_exc = 380 nm, λ_em = 550 nm).     

Low-melting salts with the [Cr<Superscript>III</Superscript>(NCS)<Subscript>4</Subscript>(1,10-phenanthroline)]<Superscript>−</Superscript> complex anion: Syntheses,properties, and structures

Four new low melting salts, “Ionic Liquids” consisting of the [Cr^III(NCS)₄(Phen)]^? complex monoanion and imidazolium based cations A, with A = 1-ethyl-3-methylimidazolium (EMIm), 1-butyl-3-methylimidazolium (BMIm), 1,3-dimethyl-2,4,5-triphenylimidazolium (DML), and 1,2,3,4,5-pentamethyl-imidazolium (PMIm), were investigated. Single-crystal X-ray investigations established the structures of the four compounds. (EMIm)[Cr(NCS)₄(Phen)] (I): triclinic, \(P\bar 1\), a = 8.1382(6), b = 10.4760(8), c = 16.003(1) Å, α = 90.330(4)°, β = 94.759(4)°, γ = 107.305(4)°, Z = 2, R ₁(F)/wR ₂(F ²) = 0.0650/0.1770; (BMIm)[Cr(NCS)₄(Phen)] (II): triclinic, \(P\bar 1\), a = 8.5545(4), b = 9.8620(4), c = 16.6762(6) Å, α = 92.503(2)°, β = 97.517(2)°, γ = 91.249(2)°, Z = 2, R ₁(F)/wR ₂(F ²) = 0.0393/0.0848; (DML)[Cr(NCS)₄(Phen)] · C₃H₆O (III): triclinic, \(P\bar 1\), a = 11.0475(9), b = 13.589(1), c = 14.582(1) Å, α = 83.013(4)°, β = 87.116(4)°, γ = 70.333(5)°, Z = 2, R ₁(F)/wR ₂(F ²) = 0.0407/0.1023; (PMIm)[Cr(NCS)₄(Phen)] · C₃H₆O (IV): orthorhombic, Pbca, a = 17.379(1), b = 16.514(1), c = 22.304(1) Å, Z = 8, R ₁(F)/wR ₂(F ²) = 0.0460/0.1107 (in addition III and IV contain co-crystallized acetone molecules). Each compound was characterized by elemental analysis, NMR, IR, und UV-Vis spectroscopy. Magnetic properties were derived from NMR investigations (EVANS method). All four compounds are paramagnetic with effective magnetic moments of spin-only Cr^III. Melting points were obtained from DSC measurements. All melting points are higher than required for “Ionic Liquids”, but nevertheless “low” for molten salts.     

Synthesis,structure, and luminescent properties of Pr<Superscript>III</Superscript> complexes with pyrazole-derived 1,3-diketone and 1,10-phenanthroline

The interaction of PrCl₃ with 1,3-bis(1,3-dimethyl-1H-pyrazol-4-yl)-1,3-propanedione in aqueous ethanol in the presence of a base and 1,10-phenanthroline was studied. It was shown that the composition of the products was dependent on the reaction conditions. The solvate [Pr(L)₃(Phen)]?3PrⁱOH crystallizes in a monoclinic crystal system (P2₁/c space group, a = 12.2239(12) Å, b = 20.3403(19) Å, c = 26.134(3) Å, β = 102.380(2)° at 150 K). Absorption spectra of the complex in solution, as well as the spectra and the kinetic parameters of photo-luminescence were investigated.     

Syntheses,Structures, and Magnetic Properties of Two Mn(II) Coordination Polymers Based on 4-Fluorocinnamic Acid and 1,10-Phenanthroline

Two Mn(II) coordination polymers, {[Mn₃ (Pfca)₆(Phen)₂] · 2DMF} _n (I) and [Mn(Pfca)₂(Phen)(H₂O)] _n (II) (HPfca = 4-fluorocinnamic acid, Phen = 1,10-phenanthroline), were synthesized and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, and singlecrystal X-ray diffraction (CIF files CCDC nos. 967513 (I), 1542972 (II)). Complex I crystallizes in the triclinic crystal system, space group Pī with a = 11.0821(11), b = 12.2632(12), c = 15.0288(15) Å, α = 87.3760(10)°, β = 88.4610(10)°, γ = 81.2220(10)°, V = 2016.0(3) Å3, ρ_c = 1.369 g/cm³, M _r = 1662.25, Z = 1, F(000) = 853, μ = 0.543 mm^–1, the final R = 0.0592 and wR = 0.1681 for 15498 observed reflections with I > 2σ(I). Complex II is of monoclinic system, space group P2₁/c with a = 18.0539(19), b = 8.5806(9), c = 18.758(2) Å, β = 116.5700(10)°, V = 2599.0(5) ų, ρ_c = 1.491 g/cm³, M _r = 583.44, Z = 4, F(000) = 1196, μ = 0.567 mm^–1, the final R = 0.0337 and wR = 0.0853 for 18139 observed reflections with I > 2σ(I). Complex I features linear Mn(II)-trinuclear units, which form 1D chain structure through F···F weak interactions, and complex II is 1D polymeric Mn(II)-chains. Antiferromagnetic coupling interactions exist within Mn(II)- carboxylate trinuclear in I (J =–0.40 cm^–1) and Mn(II)-carboxylate chain in II (J =–0.45 cm^–1).     

Chromites YbMCr<Subscript>2</Subscript>O<Subscript>5</Subscript> (M = Li,Na, K,Cs): X-ray diffraction study

Ytterbium alkali-metal chromites YbMCr₂O₅ (M = Li, Na, K, Cs) were synthesized by a ceramic procedure from the corresponding oxides and carbonates. Their crystal systems and unit cell parameters were determined by the homology method: for YbLiCr₂O₅, a = 10.34 Å, b = 10.62 Å, c = 15.05 Å, Z = 16, V ^o = 1653.74 ų, ρ_X-ray = 5.85 g/cm³, ρ_pycn = 5.81 ± 0.03 g/cm³; for YbNaCr₂O₅, a = 10.30 Å, b = 10.56 Å, c = 16.46 Å, Z = 16, V ^o = 1790.32 ų, ρ_X-ray = 5.64 g/cm³, ρ_pycn = 5.59 ± 0.07 g/cm³; for YbKCr₂O₅, a = 10.33 Å, b = 10.63 Å, c = 19.93 Å, Z = 16, V ^o = 2188.47 ų, ρ_X-ray = 5.95 g/cm³, ρ_pycn = 5.91 ± 0.03 g/cm³; and for YbCsCr₂O₅, a = 10.34 Å, b = 10.63 Å, c = 18.43 Å, Z = 16, V ^o = 2025.72 ų, ρ_X-ray = 5.19 g/cm³, ρ_pycn = 5.16 ± 0.05 g/cm³.     

Synthesis and crystal structure of (<Emphasis Type="Italic">o</Emphasis>-Diaminobenzene)<Subscript>2</Subscript> Zn(OAc)<Subscript>2</Subscript>

The treatment of o-diaminobenzene with Zn ( OAc )₂ · 2H₂O in alcohol results in the formation of mononuclear bis(o-diaminobenzene)diacetate Zinc, Zn[C₈H₁₁N₂O₂]₂. Its structure was determined by X-ray diffraction analysis. The complex is also characterized by elemental analysis, ¹H NMR and IR. The crystal is monoclinic space group C2, parameters: a = 16.297(5), b = 4.775(3), c = 11.664(5) Å, β = 97.646(5)°, λ = 1.54184 Å, V = 899.6(7) ų, Z = 2, ρ _c = 1.476 g/cm³, M _r = 399.75, F(000) = 416.0, R ₁ = 0.0594, wR ₂ = 0.1439 for 995 observed reflections with I > 2σ(I).     

Crystal structures of <Emphasis Type="Italic">trans</Emphasis>-[Re<Subscript>6</Subscript>S<Subscript>8</Subscript>(CN)<Subscript>2</Subscript>L<Subscript>4</Subscript>] complexes,L = pyridine or 4-methylpyridine

The structures of three novel octahedral rhenium cluster compounds [Re₆S₈(CN)₂(py)₄]·H₂O (1), [Re₆S₈(CN)₂(4-Mepy)₄] (2), [Re₆S₈(CN)₂(4-Mepy)₄]·4-Mepy (3) (py = pyridine, 4-Mepy = 4-methylpyridine) are determined by X-ray crystallography. Crystal data are: C2/m space group, a = 14.813(1) Å, b = 14.772(1) Å, c = 9.2122(6) Å, β = 119.085(2)°, V = 1761.7(2) ų, d _x = 3.318 g/cm³, R = 0.0585 (1); I4₁/amd space group, a = 16.0018(3) Å, c = 14.7186(5) Å, V = 3768.81(16) ų, d _x = 3.169 g/cm³, R = 0.0489 (2); P2₁/c space group, a = 9.0452(4) Å, b = 15.8065(7) Å, c = 15.2951(6) Å, β = 103.700(2)°, V = 2124.57(16) ų, d _x = 2.957 g/cm³, R = 0.0245 (3). Molecular cluster complexes interact via π-π stacking affording 3D frameworks in 1 and 2 and chains in 3.     

Lanthanum(III) complex of uracil-1-acetic acid,a new 2D coordination polymer [La(Phen)(UA)<Subscript>3</Subscript>]<Subscript>n</Subscript> · <Emphasis Type="Italic">n</Emphasis>H<Subscript>2</Subscript>O (Phen = 1,10-phenanthroline and UA = uracil-1-acetate)

A new lanthanum(III) complex of uracil-1-acetate (UA) and 1,10-phenanthroline (Phen), [La(Phen)(UA)₃]_n · nH₂O, was synthesized and characterized by elemental analysis, IR spectroscopy, XRD powder diffraction, thermal analysis, and X-ray crystallography. The single crystal X-ray analysis shows that the compound is in the monoclinic system, space group P2₁/c with a = 14.645(6), b = 17.114(7), c = 14.141(6) Å, β = 117.206(6)°, V = 3152(2) ų, Z = 4, final R ₁ = 0.0455 and wR ₂ = 0.0909. Each La³⁺ ion is coordinated by two N atoms from Phen, seven carboxylate oxygen atoms, and one carbonyl oxygen atom from UA, which results in ten-coordinate geometry, LaN₂O₈. The structural studies indicate that the title compound is two-dimensional coordination polymer, and self-assembly of the compound in the solid state is likely to occur due to N-H…O and O-H…O hydrogen bonds.     

Synthesis,Structure, and Fluorescence of a Novel Samarium Compound

A novel samarium compound, [Sm(Phen)₂(H₂O)₅]₂(Phen)₂(Bipy)Cl₆ · 7H₂O (I) (Phen = 1,10-phenanthroline and Bipy = 2,2'-bipyridine), was prepared by a solvothermal reaction. The crystal structure of I was characterized by X-ray single-crystal diffraction method (CIF file CCDC no. 1025736). Compound I is an isolated structure with the samarium ions possessing a nine-coordinated distorted monocapped square antiprism geometry. There are abundant hydrogen bonding and π–π stacking interactions which connect the molecules together to yield a three-dimensional (3D) supramolecular structure. The fluorescence spectra data reveals that I can display the characteristic emission ⁴G_5/2 → ⁶H _J transitions (J = 5/2, 7/2, 9/2 and 11/2, respectively) of Sm³⁺ ions.     

Crystal structure and properties of [M(NH<Subscript>3</Subscript>)<Subscript>5</Subscript>Cl](NO<Subscript>3</Subscript>)<Subscript>2</Subscript>, (M = Ir,Rh, Ru)

The crystal structures of compounds from the series [M(NH₃)₅Cl](NO₃)₂, (M = Ir, Rh, Ru) were described. The compounds crystallized in the tetragonal crystal system, space group I4, Z = 2. Crystal data for [Ir(NH₃)₅Cl](NO₃)₂ (I): a = 7.6061(1) Å, b = 7.6061(1) Å, c = 10.4039(2) Å, V = 601.894(16) ų, ρ_calc = 2.410 g/cm³, R = 0.0087; [Rh(NH₃)₅Cl](NO₃)₂ (II): a = 7.5858(5) Å, b = 7.5858(5) Å, c = 10.41357(7) Å, V = 599.24(7) ų, ρ_calc = 1.926 g/cm³, R = 0.0255; [Ru(NH₃)₅Cl](NO₃)₂ (III): a = 7.5811(6) Å, b = 7.5811(6) Å, c = 10.5352(14) Å, V = 605.49(11) ų, ρ_calc = 1.896 g/cm³, R = 0.0266. The compounds were defined by IR spectroscopy and XRPA and thermal analyses.     

Crystal structures of a family of layered coordination polymers containing divalent metal ions (Mn<Superscript>2+</Superscript>, Co<Superscript>2+</Superscript>, Ni<Superscript>2+</Superscript> and Zn<Superscript>2+</Superscript>) and the 3-amino 4-methyl benzoate ion

The syntheses and crystal structures of the layered coordination polymers M(C₈H₈NO₂)₂ [M = Mn (1), Co (2), Ni (3) and Zn (4)] are described. These isostructural compounds contain centrosymmetric trans-MN₂O₄ octahedra as parts of infinite sheets; the ligand bonds to three adjacent metal ions in μ³-N,O,O′ mode from both its carboxylate O atoms and its amine N atom. In each case, weak intra-sheet N–H?O and C–H?O hydrogen bonds may help to consolidate the structure. Crystal data: 1, C₁₆H₁₆MnN₂O₄, M _r = 355.25, monoclinic, P2₁/c (No. 14), a = 10.6534(2) Å, b = 4.3990(1) Å, c = 15.5733(5) Å, β = 95.1827(10)°, V = 726.85(3) ų, Z = 2, R(F) = 0.026, wR(F ²) = 0.067. 2, C₁₆H₁₆CoN₂O₄, M _r = 359.24, monoclinic, P2₁/c (No. 14), a = 10.6131(10) Å, b = 4.3374(4) Å, c = 15.3556(17) Å, β = 95.473(4)°, V = 703.65(12) ų, Z = 2, R(F) = 0.041, wR(F ²) = 0.091. 3, C₁₆H₁₆N₂NiO₄, M _r = 359.02, monoclinic, P2₁/c (No. 14), a = 10.6374(4) Å, b = 4.2964(2) Å, c = 15.2827(8) Å, β = 95.9744(14)°, V = 694.66(6) ų, Z = 2, R(F) = 0.028, wR(F ²) = 0.070. 4, C₁₆H₁₆N₂O₄Zn, M _r = 365.68, monoclinic, P2₁/c (No. 14), a = 10.6385(5) Å, b = 4.2967(3) Å, c = 15.2844(8) Å, β = 95.941(3)°, V = 694.89(7) ų, Z = 2, R(F) = 0.038, wR(F ²) = 0.107.     

Structure and properties of terbium(III) dipivaloylmethanate and its adducts with Bipy and Phen

The complex of terbium(III) with dipivaloylmethane (2,2,6,6-tetramethylheptane-3,5-dione = Htmhd) [Tb(tmhd)₃]₂ (1) and two its adducts with bipyridyl (Bipy) and phenanthroline (Tb(tmhd)₃·Bipy (2) and Tb(tmhd)₃·Phen (3)) are synthesized and analyzed by single crystal X-ray diffraction. The crystals of [Tb(tmhd)₃]₂ (1) belong to the monoclinic crystal system: P2₁/n space group, a = 12.2238(2) Å, b = 27.6369(5) Å, c = 21.8740(4) Å, β = 105.146(1)°, V = 7133.0(2)ų, Z = 4; the crystals of Tb(tmhd)₃·Bipy (2) and Tb(tmhd)₃·Phen (3) belong to the triclinic crystal system with unit cell parameters: (2) \(P\bar 1\) space group, a = 11.0554(6) Å, b = 12.2761(7) Å, c = 17.7096(8) Å, α = 77.457(2)°, β = 85.557(2)°, γ = 69.659(2)°, V = 2199.8(2) ų, Z = 2; (3) \(P\bar 1\) space group, a = 10.8814(3) Å, b = 12.2852(4) Å, c = 18.3590(6) Å, α = 80.463(1)°, β = 87.587(1)°, γ = 68.640(1)°, V = 2253.6(1) ų, Z = 2. The structures of the complexes are molecular and involve isolated [Tb₂(tmhd)₆] (1), Tb(tmhd)₃·Bipy (2), and Tb(tmhd)₃·Phen (3) molecules. The thermal properties of the obtained terbium complexes are studied by TG-DTA.     

Lead lanthanum and strontium lanthanum germanovanadates with apatite and oxyapatite structures

New compounds Pb₄La(GeO₄)₂(VO₄)(I) and Sr₅La₅(GeO₄)₅(VO₄)O(II) were prepared and identified. Compound I has the structure of apatite, a = 10.108(1) Å, c = 7.369(1) Å, V = 652.1(2) ų. Compound II has the structure of oxyapatite, a = 9.9028(5) Å, c = 7.3162(4) Å, V = 621.34(6) ų.     

Syntheses and structures of 1d coordination polymers based on cluster anions [Re<Subscript>4</Subscript>Te<Subscript>4</Subscript>(CN)<Subscript>12</Subscript>]<Superscript>4–</Superscript> and cationic Ln<Superscript>3+</Superscript> (Ln = La,Gd) complexes with 1,10-phenanthroline

Two new porous coordination polymers based on cluster anions [Re₄Te₄(CN)₁₂]^4– and cationic Ln³⁺ (Ln = La, Gd) complexes with 1,10-phenanthroline (Рhen) are synthesized under hydrothermal conditions. The structures of the compounds are determined by X-ray diffraction analysis (CIF files CCDC 1437445 (I) and 1437446 (II)). Compound (РhenH)[{La(H₂O)₃(Рhen)₂}{Re₄Te₄(CN)₁₂}] · 1.5Рhen · 6H₂O (I) crystallizes in the space group \(P\bar 1\) (triclinic system): a = 13.322(3), b = 15.977(3), c = 18.576(4) Å, α = 71.34(3)°, β = 85.56(3)°, γ = 88.27(3)°, V = 3734.8(13) ų. Compound (PhenH)[{Gd(H₂O)₂(Phen)₂}{Re₄Te₄(CN)₁₂}] · 2Phen · 0.5H₂O (II) crystallizes in the space group C2/c (monoclinic crystal system): a = 18.146(1), b = 30.245(2), c = 13.455(2) Å, β = 97.858(2)°, V = 7315.4(1) ų. Structures I and II are based on polymer chains consisting of alternating fragments [Re₄Te₄(CN)₁₂]^4– and {Ln(H₂O) _n (Phen)₂}³⁺ (Ln = La, n = 3; Ln = Gd, n = 2) linked by the bridging CN ligands. The packings of the polymers contain extended channels due to the developed network of noncovalent interactions. The walls of the channels are formed by both hydrophilic (CN^–) and hydrophobic (Рhen) groups. The channels, whose volume is 25 and 15% for compounds I and II, respectively, are filled by disordered Phen molecules and PhenH⁺ cations, as well as by H₂O molecules.     

Crystal structure and anti-cancer activity of a novel mixed-ligand complex [Pd(Phen)(Phe)]Cl · H<Subscript>2</Subscript>O

A mixed-ligand complex [Pd(Phen)(Phe)]Cl·H₂O (Phen-o-phenantroline, Phe-L-phenylalanine) is synthesized and structurally characterized by elemental analyses and single-crystal X-ray diffraction. Diffraction data: C₂₁H₁₉ClN₃O₃Pd, monoclinic, P2₁/n, a = 9.478(4) Å, b = 22.395(9) Å, c = 9.528 (4) Å, β = 104.358(11)°, V = 1959.3(14) ų, Z = 4. The Pd atom has planar-square coordination geometry and is surrounded by the Phen and Phe ligand to form a monovalent complex cation, Cl^? is filled in the crystal lattice as a counterion. The Cl atom is bonded to the complex cation through an electrostatic interaction and has a very weak hydrogen bond with a water molecule. Hydrogen bonding interactions and π-π stacking interactions stabilize the crystal lattice. The anti-cancer activity of the complex increases with the increasing concentration of the complex, which shows that the complex has strong anti-cancer activity.     

Crystal structures of [Zn(SALIMP)(CH<Subscript>3</Subscript>CO<Subscript>2</Subscript>)]<Subscript>2</Subscript> and [Cu(SALIMP)Cl] with 2-[[(2-pyridinylmethyl) imino]methyl]phenol (HSALIMP) as a ligand

Two complexes [Zn(SALIMP)(CH₃CO₂)]₂ (1) and [Cu(SALIMP)Cl] (2) are obtained by the reactions of zinc(II) and copper(II) salts with a tridentate Schiff base ligand 2-[[(2-pyridinylmethyl) imino]methyl]phenol (HSALIMP). Their structure is determined by single crystal X-ray diffraction. Data for complex 1: C₃₀H₂₈N₄O₆Zn₂, CCDC number: 668213, M _r = 671.3, monoclinic, C2/c, with a = 34.670(5) Å, b = 15.266(2) Å, c = 23.464(4) Å, β = 114.045(2)°, V = 11341(3) ų, Z = 16, F(000) = 5504, GOOF(F ²) = 0.894, the final R = 0.0520 and wR = 0.1272 for 10515 observed reflections with I > 2σ(I); complex 2: C₁₃H₁₂N₂OClCu, CCDC number: 668211, M _r = 311.24, triclinic, P-1, with a = 7.4050(8) Å, b = 10.2369(11) Å, c = 16.2873(17) Å, α = 87.728(2)°, β = 87.818(2)°, γ = 78.279(2)°, V = 1207.4(2) ų, Z = 4, F(000) = 632, GOOF(F ²) = 1.077, the final R = 0.0326 and wR = 0.0381 for 4209 observed reflections with I > 2σ(I).