Hydrothermal Synthesis, Structural Characterization and Luminescent Property of a New 1-D Chain-like [Er(NC6H4O2)3(H2O)2]n

Abstract  

Erbium (III) coordination compound with the formula [Er(IN)₃(H₂O)₂]_n 1 (HIN = isonicotinic acid) was synthesized by mixing Er₂O₃ with isonicotinic acid under hydrothermal condition. The structure of the title compound was determined by single crystal X-ray diffraction analysis, which reveals that the 1-D chain-like structure is formed by the erbium polyhedra through the carboxyl groups of IN. It crystallizes in the monoclinic system, possesses space group C2/c, with lattice parameters: a = 20.229(10) ?, b = 11.594(6) ?, c = 9.871(5) ?, α = γ=90°, β = 115.509(6)°, V = 2089.3(18) ?³, and D _calc = 1.811 mg/cm³ for Z = 4, F(000) = 1108, GOF = 1.109, R1 = 0.0675. Compound 1 has been characterized by IR absorption spectroscopy, ultraviolet excitation and emission spectrum.     

Solvothermal Syntheses and Crystal Structures of Neodymium Thiostannates [Nd(dien)3]2[(Sn2S6)Cl2] and [Nd(dien)3]2[(Sn2S6)(SH)2]

Abstract  

Two neodymium thiostannates [Nd(dien)₃]₂[(Sn₂S₆)Cl₂] (1) and [Nd(dien)₃]₂[(Sn₂S₆)(SH)₂] (2) (dien = diethylenetriamine) were synthesized by the reaction of tin and sulfur in the presence of NdCl₃ and Nd₂O₃, respectively under solvothermal conditions. Compounds 1 and 2 crystallize in monoclinic space group P2₁/n. Crystallographic data for 1: a = 11.6722(16), b = 15.119(2), c = 14.1566(19) ?, β = 96.213(3)°, V = 2483.6(6) ?³, Z = 4. For 2: a = 11.7190(14), b = 15.2168(19), c = 14.2209(18) ?, β = 95.775(4)°, V = 2523.1(5) ?³, Z = 4. The nine-coordinate [Nd(trien)₃]³⁺ complex cation formed in situ acts as the counter ion to the [Sn₂S₆]⁴⁻ anion. The [Nd(dien)₃]³⁺, [Sn₂S₆]⁴⁻ and Cl^– (or SH^–) ions form a 3-dimensional network structure through the N–H···S and N–H···Cl hydrogen bonds.     

The Structure and Fluorescence Property of a 3D Supramolecular Network [Cd2(2-mBIM)2Cl2(C4H4O4)(H2O)2(H2O)]n

Abstract  

A cadmium(II) coordination polymer [Cd₂(2-mBIM)₂Cl₂(C₄H₄O₄)(H₂O)₂(H₂O)] _n (1) (wherein 2-mBIM = bis(2-methylimidazo-1-yl) methane, C₄H₄O₄ = succinate anion) has been synthesized and characterized by X-ray diffraction. Complex 1 crystallizes in the monoclinic space group C2/c with a = 23.5265(15) ?, b = 7.3558(5) ?, c = 17.4771(11) ?, β = 90.3560(10)°, V = 3024.5(3) ?³, Z = 4. Each Cd(II) atom is octahedrally coordinated and connected with two adjacent Cd(II) atoms by two individual 2-mBIM ligands in a trans-configuration to form one-dimensional (1D) helical structure. Such 1D helical chain structures were connected to each other via the succinate anion ligands and result in the formation of a two-dimensional (2D) framework. Meanwhile, an overall three-dimensional (3D) supramolecular network was formed via the weak hydrogen bond interactions between metal-coordination and free water molecules.     

Synthesis and Structural Characterization of K3Th2(PO4)3F2 and RbThPO4F2 as Potential Nuclear Waste Storage Materials

Abstract  

Two new alkali thorium phosphate materials, K₃Th₂(PO₄)₃F₂ and RbThPO₄F₂, were isolated by hydrothermal synthesis at 575 °C. These structures were characterized by single crystal X-ray diffraction using a full-matrix least squares method. The K₃Th₂(PO₄)₃F₂ compound crystallizes in C2/c (No. 15) with a = 15.8179(15) ?, b = 9.8172(8) ?, c = 9.6472(9) ?, β = 121.132(7)°, Z = 4 and R ₁ = 0.0329. This structure contains two large open channels possibly suitable for incorporating radioactive cesium isotopes for waste storage. The RbThPO₄F₂ structure forms in the P2 ₁ /m (No. 11) space group with a = 6.719(4) ?, b = 6.002(3) ?, c = 7.431(5) ?, β = 113.925(19)°, Z = 2 and R ₁ = 0.0359. Unique to this material is a chain of edge sharing thorium with square antiprism coordination environments where fluorine occupies both sites along the edge. Both structures also represent the first occurrences of a fluorinated alkali thorium phosphate material.     

Chloride Metathesis and Dimethylamide Transfer in the Reaction of TaCl(NMe2)4 with ZnMe2 and MeMgCl: Spectroscopic Studies and X-ray Diffraction Structures of TaCl(Me)(NMe2)3 and ZnCl2(NHMe2)2

Abstract  

Treatment of TaCl(NMe₂)₄ with ZnMe₂ in pentane furnishes a mixture of TaCl(Me)(NMe₂)₃, TaMe(NMe₂)₄, and Ta(NMe₂)₅ as the principal reaction products based on ¹H NMR spectroscopy. Depending upon the work-up conditions employed, the compounds TaCl(Me)(NMe₂)₃ and ZnCl₂(NHMe₂)₂ have been isolated and their molecular structures established by X-ray crystallography. TaCl(Me)(NMe₂)₃ crystallizes in the orthorhombic space group Pna2₁, a = 13.644(4) ?, b = 12.934(4) ?, c = 6.992(2) ?, V = 1233.9(7) ?³, Z = 4, and d _calc = 1.958 Mg/m³; R = 0.0316 and wR ₂ = 0.0707 for 2630 reflections with I > 2σ(I). The molecular structure of TaCl(Me)(NMe₂)₃ consists of a trigonal bipyramidal core and contains axial and equatorial chlorine and methyl groups, respectively. ZnCl₂(NHMe₂)₂ crystallizes in the orthorhombic space group P2₁2₁2₁, a = 5.759(1) ?, b = 10.810(2) ?, c = 15.174(3) ?, V = 944.1(3) ?³, Z = 4, d _calc = 1.593 Mg/m³; R = 0.0213 and wR ₂ = 0.0494 for 1872 reflections with I > 2σ(I). ZnCl₂(NHMe₂)₂ exhibits a tetrahedral motif and represents the first reported four-coordinate zinc(II) compound containing acyclic monodentate secondary amine groups. The reaction between TaCl(NMe₂)₄ and MeMgCl afforded a mixture of tantalum products, of which TaCl(Me)(NMe₂)₃ and Ta(NMe₂)₅ were found as the major products by ¹H NMR spectroscopy.     

Crystal structure of M4[(UO2)2C2O4(SO4)2(NCS)2] ( M = K+, Rh+) and K4[(UO2)2C2O4(SeO4)2(NCS)2]

Three heteroacidoligand uranyl complexes M ₄[(UO₂)₂C₂O₄(SO₄)₂(NCS)₂] (M = K⁺ (I), Rb⁺ (II)) and K₄[(UO₂)₂C₂O₄(SeO₄)₂(NCS)₂] (III) have been synthesized and their crystal structure has been determined by X-ray diffraction analysis. The compounds I–III are isostructural and crystallized in the monoclinic system, sp. gr. P2₁/c, Z = 2, a = 11.5548(3) ?, b = 7.0847(1) ?, c = 13.5172(3) ?, β = 93.130(1)°, V = 1104.90(4), R = 0.015 (I); a = 11.5854(9) ?, b = 7.3841(6) ?, c = 13.9072(9) ?, β = 95.754(3)°, V = 1183.74(15), R = 0.0235 (II); a = 11.6715(3) ?, b = 7.1418(2) ?, c = 13.8546(1) ?, β = 93.539(1)°, V = 1152.66(5), R = 0.0126 (III). Basic structural units of these crystals are [(UO₂)₂C₂O₄(XO₄)₂(NCS)₂]⁴⁻ chains, which belong to the crystallochemical group A ₂ K ⁰² B ₂² M ₂¹ (A = UO₂²⁺, K ⁰² = C₂O₂₋⁴, B ² = SO₄²⁻ or SeO₄²⁻, M ¹ = NCS⁻) of uranyl complexes. Uranium-containing chains are connected into a 3D framework via a system of electrostatic interactions with potassium or rubidium cations from outer spheres. Original Russian Text ? I.V. Medrish, E.V. Peresypkina, A.V. Virovets, L.B. Serezhkina, 2008, published in Kristallografiya, 2008, Vol. 53, No. 3, pp. 495–498.     

Crystal and Molecular Structures of C6H5CH2SOCH2CONHCH2C6H5 and C6H5SOCH2CON(iC3H7)2

Abstract  The crystal structures for two of the ligands C₆H₅CH₂SOCH₂CONHCH₂C₆H₅ (1) and C₆H₅SOCH₂CON(ⁱC₃H₇)₂ (2) have been determined by X-ray diffraction. These compounds crystallize in orthorhombic system with space groups and cell parameters, Pca21(no. 29), a = 8.4600(5) ?, b = 5.3534(5) ?, c = 32.136(2) ?, V = 1455.42(15) ?³ and Pna21(no. 33) a = 17.5563(11) ?, b = 5.7902(4) ?, c = 14.2866(9) ?, V = 1452.30(16) ?³, respectively. These molecules are stabilized in solid state by various intra and intermolecular hydrogen bonding interactions to give polymeric structures. The reported IR spectra of these compounds in solid state could be explained on the basis of the observed intermolecular hydrogen bonding interactions. Index Abstract  The title compounds C₆H₅CH₂SOCH₂CONHCH₂C₆H₅ (1) and C₆H₅SOCH₂CON(ⁱC₃H₇)₂ (2) were prepared by the oxidation of corresponding sulfides with H₂O₂/SeO₂ in methanol and their structures were determined. The structures show that the SO and CO groups are having “anti” configuration in 1 and “syn” configuration in 2. Electronic supplementary material  The online version of this article (doi:) contains supplementary material, which is available to authorized users.     

Synthesis and Molecular Structure of (C5Me5)2U(OtBu)(SePh): A Mixed-Ligand Alkoxide-Selenide Uranium(IV) Metallocene Complex Resulting from tert-Butoxy-Trimethylsilane Elimination

Abstract  

The title compound (C₅Me₅)₂U(O^tBu)(SePh) (1) was synthesized and characterized by NMR spectroscopy, elemental analysis, and X-ray crystallography. This system represents a unique example of an actinide complex with two different group 16 elements coordinated to the metal center and the first mixed-ligand actinide alkoxide-selenide complex. The complex crystallizes in the orthorhombic space group Pbca with unit cell parameters a = 17.830(7) ?, b = 14.973(6) ?, c = 21.254(8) ?, V = 5674(4) ?³, Z = 8, D _calc = 1.727 Mg/m³. The uranium(IV) mixed-ligand alkoxide-selenide complex adopts a pseudo-tetrahedral geometry, with the tert-butoxide and phenylselenide ligands occupying the plane bisecting the metallocene unit. Structural comparisons of the complex (C₅Me₅)₂U(O^tBu)(SePh) (1) are made with related selenide and alkoxide uranium(IV) complexes.     

Synthesis and Crystal Structure of Charge-Transfer Salt (TTF)[Pt(mnt)2]

Abstract  

The synthesis and crystal structure of the title organic charge-transfer salt (TTF)[Pt(mnt)₂] (TTF = tetrathiafulvalene; mnt = cis-3,4-dimercapto-2-butenedinitrile) is described. The salt crystallizes in the P-1 space group with a = 7.9174(13) ?, b = 11.1583(18) ?, c = 11.2600(18) ?, α = 107.490(3)°, β = 91.631(3)°, and γ = 94.980(3)°. The stoichiometry between TTF and [Pt(mnt)₂] is 1:1. The structure of (TTF)[Pt(mnt)₂] consists of alternating stacks of dimerised TTF⁺ cations and dimerised [Pt(mnt)₂]⁻ anions, linked together by many kinds of short contacts and hydrogen bonds. Both the dimerised TTF⁺ cations and dimerised [Pt(mnt)₂]⁻ anions are arranged in a parallel face-to-face mode.     

Crystal structures of (?)-(SS, 1R, 2S, 5R)-menthyl p-tolyl sulfinate and (+)-(SS)-[(p-tolyl)sulfinyl]ferrocene

The absolute configuration at the chiral sulfurs centers of (−)-(S _S , 1R, 2S, 5R)-menthyl-p-tolylsulfinate (1) and (S _S )-[(p-tolyl)sulfinyl]ferrocene (2) were determined by single crystal X-ray diffraction with anomalous dispersion effects and the corresponding calculation of Flack’s absolute structure parameters. Both compounds crystallize in the monoclinic crystal system in space group P2₁ (no. 4); chiral sulfinate ester 1: a = 8.2868(6), b = 6.1399(3), c = 16.366(2) ?, β = 91.816(6)°, V = 832.3(2) ?³, Z = 2 and absolute structure parameter −0.03(7); chiral ferrocenyl sulfoxide 2: a = 5.8371(3), b = 15.390(2), c = 16.143(2) ?, β = 97.748(6)°, V = 1436.9(3) ?³, Z = 4 and absolute structure parameter +0.01(1). The trigonal pyramidal geometry at the chiral sulfur atom of 2 is close to expected values while the one of 1 is slightly distorted. With direct determination of the absolute configuration at the chiral sulfur centers an important gap concerning the widely used precursors 1 and 2 for the syntheses of chiral sulfoxides and 1,2-disubstituted planar chiral ferrocenyl ligands is now closed. The latter substance class is playing a key role in enantioselective catalysis.     

Syntheses, Characterizations and Crystal Structures of Two Copper Coordination Polymers Both Having Cu2Cl2 Bridging Subunit [CuI(bipy)1/2Cl]n(1) and {[(CuII)4(phen)4(SSA)2Cl2](H2O)2(DMF)2}n(2)

Abstract  

Two copper coordination polymers [Cu^I(bipy)_1/2Cl] _n (1) and {[(Cu^II)₄(phen)₄(SSA)₂Cl₂] (H₂O)₂(DMF)₂} _n (2)(bipy = 4,4′-bipyridine, phen = 1,10-phenanthroline, H₃SSA = 5-sulfosalicylic acid, DMF = N,N-dimethylformamide) have been prepared and characterized by X-ray diffraction, elemental analysis, IR spectrum and 2 was also studied by cyclic voltammetric method. X-ray analysis indicates that both of them have Cu₂Cl₂ bridging subunit. Complex 1 is a two dimensional network structure. While 2 shows a one dimensional zigzag chain. Electrochemistry studies reveal that complex 2 undergo a quasi reversible one-electron metal-centered redox process at E _1/2 = +0.062 V.     

Synthesis and Crystal Structure of MnII(OAc)2[15-MC MnIII(N)shi-5](Im)3(EtOH)3 (shi3??=?salicylhydroximate, ?OAc?=?acetate, Im?=?imidazole, and EtOH?=?ethanol)

Abstract  

The metallacrown complex Mn^II(OAc)₂[15-MC_Mn^III _(N)shi-5](Im)₃(EtOH)₃ has been synthesized and characterized by single-crystal X-ray diffraction and infrared spectroscopy. The compound crystallizes in the monoclinic space group P2₁/c with a = 24.3326(15) ?, b = 24.0354(15) ?, c = 27.0531(17) ?, α = 90.00°, β = 100.3883(11)°, γ = 90.00°, V = 15562.5(17) ?³, Z = 4, and Z′ = 2. Four of the five manganese(III) ions of the metallacrown ring adopt a distorted octahedral coordination geometry, and the fifth manganese(III) ion is five coordinate and exhibits a distorted square pyramidal environment. The configuration of the manganese(III) ions about the ring follows a pattern of ΔΛΔPP, with P representing planar. In addition, the imidazole units are bound to three separate ring manganese(III) ions, and the imidazole units are directed to the outside of the molecule. A manganese(II) ion is encapsulated in the central core of the molecule, and the central ion is seven coordinate with a face-capped trigonal prismatic geometry.     

Synthesis and crystal structure of (NH4)3[UO2(CH3COO)3]2[UO2(CH3COO)(NCS)2(H2O)]

Single crystals of the compound (NH₄)₃[UO₂(CH₃COO)₃]₂[UO₂(CH₃COO)(NCS)₂(H₂O)] (I) are synthesized, and their structure is investigated using X-ray diffraction. Compound I crystallizes in the monoclinic system with the unit cell parameters a = 18.3414(6) ?, b = 16.3858(7) ?, c = 12.4183(5) ?, β = 92.992(1)°, space group C2/c, Z = 4, V = 3727.1(3) ?³, and R = 0.0253. The uranium-containing structural units of crystals I are mononuclear complexes of two types with an island structure, i.e., the [UO₂(CH₃COO)₃]⁻ anionic complexes belonging to the crystal-chemical group (AB ₃⁰¹ = UO₂²⁺, B ⁰¹ = CH₃COO⁻) of the uranyl complexes and the [UO₂(CH₃COO)(NCS)₂(H₂O)]⁻ anionic complexes belonging to the crystal-chemical group AB ⁰¹M₃¹ (A = UO₂²⁺, B ⁰¹ = CH₃COO⁻, M ¹ = NCS⁻ or H₂O).     

Synthesis, Spectroscopic Characterization and Crystal Structure of a New Acetyl phosphorylamidate P(O)[NHC(O)C6H4(4-NO2)][N(CH(CH3)2)(CH2C6H5)]2

Abstract  

A new acetyl phosphorylamidate P(O)[NHC(O)C₆H₄(4-NO₂)][N(CH(CH₃)₂)(CH₂C₆H₅)]₂ has been synthesized and characterized by elemental analysis, ¹H, ¹³C and ³¹P NMR, IR and single crystal X-ray diffraction. Single crystal X-ray analysis shows that it belongs to triclinic system, space group P[`1] P\bar{1} , with a = 10.5868(16) Å, b = 11.8058(18) Å, c = 12.4364(19) Å, α = 65.410(3)°, β = 67.492(4)°, γ = 85.879(3)°, V = 1,298.6(3) Å³, and Z = 2. The intermolecular PO···HN hydrogen bond makes H-bonded dimer of molecule with Ci symmetry. In the crystal network, the dimers are aggregated in the chain arrays through π-stacking between p-NO₂–C₆H₄–C(O)–NH– moieties. Moreover, weak C–H···O and C–H···π interactions exist in the crystal network.     

Synthesis and X-ray structural investigation of K2(H5O2)[UO2(C2O4)2(HSeO3)]

The synthesis and X-ray diffraction analysis of K₂(H₅O₂)[UO₂(C₂O₄)₂(HSeO₃)] single crystals have been performed. This compound crystallizes in the triclinic system with the unit-cell parameters a = 6.7665(4) ?, b = 8.8850(4) ?, c = 12.3147(7) ?, α = 94.73°, β = 90.16°, γ = 92.11°, sp. gr. P[`1]P\bar 1, Z = 2, and R = 0.019. The basic structural units are island [UO₂(C₂O₄)₂(HSeO₃)]³⁻ groups, which belong to the AB ₂⁰¹ M ¹ crystallochemical group of uranyl complexes (A = UO₂²⁺, B ⁰¹ = C₂O₄²⁻, and M ₁ = HSeO₃⁻). Uraniumcontaining complexes are linked through K⁺ and H₅O₂⁺ ions and via a system of hydrogen bonds with the participation of oxonium hydrogen atoms in this structure.     

Crystal Structures of a Series of 1,1-Spiro-bis(1,2,3,4-tetrahydronaphthalene)-Based Derivatives

Abstract  

The structures of four spirobisnaphthalenes based monomers 1, 2, 3a and 3b are reported. Each compound represents a methoxylated precursor which after deprotection led to the formation of a monomer successfully used for the synthesis of Polymers of intrinsic microporosity. The spiro-centre represents the site of contortion that, since its rigidity, leads to inefficient packing in the solid state inducing microporosity in the final polymer. Compound 1 crystallized in the monoclinic P2/c space group with unit cell parameters a = 8.1659(19) ?, b = 7.5298(18) ?, c = 19.130(5) ?, β = 97.935(4)°, V = 1165.0(5) ?³, Z = 2, D = 1.210 Mg m⁻³. Compound 2 crystallized in the monoclinic P2₁/n space group with unit cell parameters a = 12.6940(9) ?, b = 7.7267(6) ?, c = 19.9754(15) ?, β = 97.220(1)°, V = 1943.7(3) ?³, Z = 4, D = 1.355 Mg m⁻³. Compound 3a crystallized in the monoclinic P2₁/c space group with unit cell parameters a = 16.8137(14) ?, b = 10.5577(9) ?, c = 31.344(3) ?, β = 103.618(1)°, V = 5407.5(8) ?³, Z = 8, D = 1.308 Mg m⁻³. Compound 3b crystallized in the monoclinic Pc space group with unit cell parameters a = 15.594 ?, b = 12.564 ?, c = 18.339 ?, β = 90.224(1)°, V = 3593.0 ?³, Z = 4, D = 1.236 Mg m⁻³.     

The R 22 (8) Hydrogen-Bonded Supramolecular Synthon in Two Novel Glycoluril Derivatives

Abstract  

Two new glycoluril derivatives, namely 6-phenyl-1,4-dioxo-2,2a,3,4,6,7-hexahydro-1H,5H-2,3,4a,6,7a-pentaazacyclopenta[cd]indene-2a,7b-dicarboxylate (1), and diethyl 6-(2,4-dichorophenyl)-1,4-dioxo-2,2a,3,4,6,7-hexahydro-1H,5H-2,3,4a,6,7a-pentaazacyclopenta[cd]indene-2a,7b-dicarboxylate (2) have been synthesized and structurally determined by X-ray diffraction analysis. Compound 1 is, monoclinic, space group C2/c, with a = 20.0784(7), b = 9.0316(3), c = 23.0980(8) ?, β = 98.3930(10), V = 4143.7(2) ?³, with Z = 8 for d _calc = 1.338 Mg/m³. The analog 2 is, Triclinic, space group P-1, with a = 8.9353(18), b = 10.466(2), c = 14.679(3) ?, β = 73.60(3), V = 1268.1(4) ?³, with Z = 2 for d _calc = 1.533 Mg/m³. X-ray analysis reveals that both glycoluril derivatives bearing two free syn-urea NH groups and two ureidyl C=O, assemble the same one-dimensional chains in the solid-state running parallel to the [110], [1–10] and [010] directions via N–H···O hydrogen bonds.     

Hydrogen Bonded Supramolecular Assembly in N6-Benzyladeninium Nitrate and N6-Benzyladeninium 3-Hydroxy Picolinate: A Synthetic Cytokinin

Abstract  

N ⁶-benzyladeninium nitrate, (1), C₁₂H₁₂N₅ ⁺ NO₃ ⁻ crystallizes in P2 ₁/c, with a = 15.0035(13), b = 5.3788(5), c = 16.8954(13) ?, β = 107.331(6)°, Z = 4 and N ⁶-benzyladeninium 3-hydroxy picolinate, (2), C₁₂H₁₂N₅ ⁺ C₆H₄NO₃ ⁻, crystallizes in P1, with a = 8.3017(4), b = 14.6170(7), c = 14.7909 (8) ?, α = 78.801 (4), β = 81.979 (4),γ = 88.849 (4)°, Z = 4. In both the salts, the cation exists as N(7)H tautomer with protonation at the N₃ atom. The dihedral angle of 76.64 (16)° for (1), 67.91(12)° for (cation A) and 68.27 (13)° for (cation B) in (2), between the adenine plane and phenyl ring plane, the distal orientation of the N6 substituent with respect to the imidazole ring and the free N1 position, make these benzyladeninium cations meet all the requirements necessary for cytokinin activity. The crystal structures are stabilized by N–H···N, N–H···O, C–H···O hydrogen bonds and C–H···π stacking interaction between symmetry related benzyladenine molecule.     

Crystal structure of PbUO2(CH3COO)4(H2O)3

Single crystals of PbUO₂(CH₃COO)₄(H₂O)₃ have been investigated by X-ray diffraction (R = 0.029 for 3175 reflections). The structure of this compound is formed by [Pb(CH₃COO)(H₂O)₃]⁺ chains, which are oriented along the [100] axis and limited by one-core complexes [UO2(CH₃COO)₃]⁻. The coordination numbers of the Pb(II) and U(VI) atoms are 8, and the coordination polyhedron of uranium is a hexagonal bipyramid whose vertices contain oxygen atoms of three bidentate cyclic acetate groups and the uranyl group. Taking into account the different crystallographic roles of acetate ions, the crystal-chemical formula of [PbUO₂(CH₃COO)₄(H₂O)₃] chains can be written as AA′B ²¹ B ¹¹(B ⁰¹)₂ M ₃¹, where A = Pb; A′ = UO₂²⁺; M ¹ = H₂O; and B ²¹, B ¹¹, and B ⁰¹ are CH₃COO⁻ groups.     

Synthesis and Crystal Structure of 2,4-Diiodo-6-[(2-morpholin-4-yl-ethylimino)-methyl]-phenolato-zinc(II)

Abstract  

One new complex, 2,4-Diiodo-6-[(2-morpholin-4-yl-ethylimino)- methyl]- phenolato-zinc(II) has been designed and synthesized. The structure was determined by UV, IR and single X-ray crystallography study. The title complex C₂₆H₃₀O₄N₄I₄Zn crystallizes in the triclinic space group P − 1 with the cell parameters a = 9.938(2) ?, b = 11.937(2) ?, c = 14.527(3) ?, α = 87.14(3)°, β = 79.03(3)°, γ = 76.20(3)°, V = 1565.1(5) ?³ and Z = 2. The central zinc(II) is four coordinate and bonds to two nitrogen atoms and two oxygen atoms from two 3,5-diiodosalicylaldehyde-2- morpholinoethylamine Schiff bases. The complex is linked into a column by weak intermolecular interactions.