Synthesis and Crystal Structure of a Novel 1D Coordination Polymer:[Pr(BYBA)_3(H_2O)_2]·[Pr(BYBA)_3(H_2O)]

The novel coordination polymer [Pr(BYBA)3(H2O)2]·[Pr(BYBA)3(H2O)] (BYBAH=2-benzoylbenzoic acid) was yielded by hydrothermal synthesis,determined by single-crystal X-ray diffraction,and characterized by FT-IR and UV-Vis spectra. The crystal crystallizes in the triclinic system,space group P1 with a=9.112(3),b=14.644(5),c=27.076(11),α=84.223(3),β= 87.816(4),γ=88.902(4)o,V=3592(2)3,C84H60O21Pr2,Mr=1687.14,Z=2,F(000)=1700,Dc= 1.560 g/cm3,μ=1.419 mm-1,the final R=0.0485 and wR=0.1258 for 13035 observed reflections with I > 2σ(I). The compound contains two different building units,[Pr2(BYBA)6(H2O)4] and [Pr2(BYBA)6(H2O)2]. It is noticeable that [Pr2(BYBA)6(H2O)4] is an isolated binuclear building block,in which the Pr3+ ion centers are both located in an eight-coordinated environment. However,in [Pr2(BYBA)6(H2O)2] the Pr3+ ion centers are located in a nine-coordinated environment and connected by BYBA ligands to form 1D chains.     

An organic-inorganic polymer with Dawson-type polyoxometalates as building blocks: synthesis,characterization and crystal structure of [{Pr(DMF)_6}{Pr(DMF)_7}(P_2W_(18)O_(62))]_n

An organic-inorganic polymer of [{Pr(DMF)6}{Pr(DMF)7}(P2W18O62)]n has been synthesized in acetonitrile-water (5:2, volume ratio) mixed solvent. Single-crystal X-ray structural analysis indicates that the title compound crystallizes in a monoclinic lattice, P21/C, with a = 1.8574(4), b = 2.3907(5), c = 2.4222(5) nm, B= 99.48(3), Z= 4, V= 10.609(4) nm3, Dc = 3.501 Mg/m3, F(000) = 9972, R1 = 0.0654 and wR2= 0.1098. The result of crystal structure analysis reveals that Pr3+(1) complex ion is eight-coordinated with a distorted bicapped trigonal prismatic environment, which is combined with the heteropolyanion by terminal oxygen atom, whereas Pr3+(2) complex ion is also eight-coordinated with a distorted square antiprismatic environment, which is linked to the heteropolyanion by terminal oxygen atom. Adjacent structure units of [{Pr(DMF)6}{Pr(DMF)7}(P2W18O62)] are bridged through W-O-Pr1-O-W links to form an unprecedented one-dimensional zigzag linear chain by alternate polyanions and cationic units in the po     

Synthesis and Crystal Sturcture of a New Praseodymium（Ⅲ）polym煳x：[

A novel polymeric Pr2Cu3 complex of iminodiacetic acid (H2L1=NH{CH2COOH}2) [Pr2Cu3(L1)6]n , 1, has been synthesized and structurally characterized. The title complex Pr2Cu3O24N6C24H30 (Mr=1258.97) crystallized in trigonal space group Pc1 (No. 165) with a = 13.424(4), c=14.752(6)(); V=2303(1)()3; F(000)=1226; λ(MoKα)=35.2 cm-1; Dc=1.820 g.cm-3; Z=2. The final R and Rw are 0.072 and 0.081 respectively for 1412 reflections with I>3σ(I). In crystal 1, the Pr3+ ion is nine-coordinated by 6 O atoms from three bidentate chelating carboxylate groups and 3 O atoms from three anti-anti bridging carboxylic groups of six L1 ligands; the Cu2+ ion is six-coordinated by 4 O and 2 N atoms from two pentadentate L1 ligands. Each pair of Pr(Ⅲ) atoms is bridged by three L1 ligands, each of which also chelates with one copper(Ⅱ) ion, thus forming a Pr2Cu3 cluster unit. Such cluster units are cross-linked by flexible L1 ligands into a three-dimensional coordination framework.     

Synthesis and Crystal Structure of an Ionic Compound [Fe(CN)_6(phCH_2NC_5H_5)3]·(H_2O)_4

A novel ionic compound [Fe(CN)6(phCH2NC5H5)3]·(H2O)4(Mr = 794.71) has been synthesized and its structure was characterized by IR, elemental analysis and X-ray diffraction. The compound crystallizes in monoclinic, space group P21/c with a = 10.837(2), b = 16.551(3), c = 23.402(5) , β = 97.531(4)o, V = 4161.0(15) A3, Z = 4, Dc = 1.269 g/cm3, F(000) = 1668, μ = 0.414 mm-1, R = 0.0479 and wR = 0.1232. The building unit of the title compound consists of three (phCH2N+C5H5) ions, one [Fe(CN)6]3- anion and four water molecules. According to the structural analysis, [Fe(CN)6]3- are linked together by O–H···N and O–H···O hydrogen bonds, but [Fe(CN)6]3- and [(phCH2N+C5H5)3] ions are bound by electrostatic force to form an ionic compound.     

Syntheses and Crystal Structures of Three Coordination Complexes Based on Ln(Ⅲ) and mpca-Ligand

Three complexes obtained by the reaction of Pr(Ⅲ) or Nd(Ⅲ) salts with 5-methyl-2-pyrazinecarboxylic acid(Hmpca) are structurally determined by single-crystal X-ray diffraction.Complex [Pr(mpca-)3(H2O)2]2·6H2O(1) is composed of dinuclear Pr(Ⅲ) units with two metal centers bridged by two anionic mpca-ligands in a κ3O,O':O' bridging mode.Complexes [Pr(mpca-)3]n(2) and [Nd(mpca-)3]n(3) are isostructures,and they consist of polymeric chains based on Ln(Ⅲ) and mpca-ligands.Each pair of adjacent metal centers is linked by three mpca-molecules in a κ3N,O:O bridging mode.     

Synthesis and Crystal Structure of an Ionic Compound [Fe(CN)6(phCH2NC5H5)3]·(H2O)4

A novel ionic compound [Fe(CN)6(phCH2NC5H5)3]·(H2O)4(Mr = 794.71) has been synthesized and its structure was characterized by IR, elemental analysis and X-ray diffraction. The compound crystallizes in monoclinic, space group P21/c with a = 10.837(2), b = 16.551(3), c = 23.402(5) (A), β = 97.531(4)°V = 4161.0(15)(A)3, Z = 4, Dc = 1.269 g/cm3, F(000) = 1668, μ = 0.414 mm-1, R = 0.0479 and wR = 0.1232. The building unit of the title compound consists of three (phCH2N C5H5) ions, one [Fe(CN)6]3- anion and four water molecules. According to the structural analysis, [Fe(CN)6]3- are linked together by O-H…N and O-H…O hydrogen bonds, but [Fe(CN)6]3- and [(phCH2N C5H5)3] ions are bound by electrostatic force to form an ionic compound.Keywords: N-benzyl-pyridine, ferricyanic anion, crystal structure, supramolecular, ionic compound.     

Crystal Structure of the 1:2 Stoichiometric Nd: [α-SiW11O39]8-: K5Na5H3[Nd(α-SiW11O39)2]·6H2O

Single-crystal X-ray structural analysis of K5Na5H3[Nd(α-SiW11O39)2]·6H2O(triclinic, space group P1-, a = 13.7738(10), b = 19.722(2), c = 20.6647(15) (A), α = 111.0090(10), β =105.1740(10), γ = 98-6870(10)°, Z = 2, V = 4867.2(8), Mr = 5914.40, Dc = 4.026, μ = 26.754 mm-1,F(000) = 5076, R = 0.0750 and wR = 0.2077) reveals that two [α-SiW11O39]8- moieties are connected through one Nd atom which is in a square antiprismatic coordination environment by eight oxygen atoms from two [α-SiW11O391]8- moieties. The Nd(Ⅲ) ion is substituted for a [WO]4 unit in the "cap" region of the tungsten-oxygen framework of the parent Keggin ion. Disordered Na cations and water molecules reside outside these channels, leaving empty pores with an intersecting slot (13 (A) × 10 (A)).     

Hydrothermal Synthesis, Crystal Structure and Photoluminescence of [Sm（PCA）_3（H_2O）_2]_n·6nH_2O

A new one-dimensional (1-D) compound [Sm(PCA)3(H2O)2]n·6nH2O (1, HPCA=pyrazinecarboxylic acid) has been synthesized via hydrothermal reaction and structurally characterized by single-crystal X-ray diffraction. Compound 1 crystallizes in the Pbca space group of orthorhombic system with a=19.465(3), b=12.034(4), c=19.842(4) , V=4648(2)3, C15H25N6O14Sm, Mr=663.76, Dc=1.897 g/cm3, S=1.023, μ(MoKα)=2.610 mm-1, F(000)=2648, R=0.0239 and wR=0.0616. Compound 1 is characteristic of an infinite 1-D chain-like structure with the samarium atoms locating at an environment of a monocapped square antiprism. The [Sm(PCA)3(H2O)2]n chains and the lattice water molecules interconnect together through π-π interactions and hydrogen bonding interactions to yield a 3-D supramolecular framework. Photoluminescent investigation reveals that the title compound displays an emission in the greenish blue region.     

Synthesis,crystal structure,magnetic properties and second harmonic generation of a new noncentrosymmetric coordination compound:Triaqua(4-amino-6-methoxypyrimidine) cuprate(Ⅱ)sulfate

The chemical preparation, crystal structure and infrared spectroscopic characterization of the triaqua(4-amino-6-methoxypyrimidine) cuprate(II) sulfate, [Cu(C_5H_7N_3)(H_2O)_3]SO_4, is reported. The compound crystallizes in the noncentrosymmetric orthorhombic space group P2_12_12_1 with lattice parameters a = 7.9025(3), b = 11.1189(4), c = 12.9720(4) , V = 1139.81(7) ~3 and Z = 4. The Cu(II) cation is fivecoordinated, in an early half-way between square pyramidal and trigonal bipyramidal fashion, by two nitrogen atoms of the 4-amino-6-methoxypyrimidine ligand and three water oxygen atoms. In the atomic arrangement, the organic ligands and the 5-connected Cu centers are linked with each other to give a 1-D corrugated hybrid chain running along the b-axis direction. The chains are interconnected by the SO_4~(2-) anions via O–H...O, O–H...S, C–H...O and N–H...O hydrogen bonds to form layers spreading parallel to the(011) plane. The vibrational absorption bands were identified by infrared spectroscopy. Quantitative measurements of the second harmonic generation(SHG) of a powdered sample at 1064 nm were performed and a relative efficiency of 5.2 times the KDP standard was observed. Magnetic properties were also defined to characterize the complex. Magnetic measurements revealed that this material had a onedimensional antiferromagnetic character. The magnetic parameters were g = 2.11 and 2J/k B = -36 K.     

Synthesis and Crystal Structure of a New Cadmium（Ⅱ） Coordination Polymer with Ethylenediaminetetraacetic Acid

A new cadmium(Ⅱ) coordination polymer,namely,[KCd2(edta)I]n(1,H4edta = ethylenediaminetetraacetic acid),has been prepared and structurally characterized by single-crystal X-ray diffraction.Crystallographic data for 1:C10H12Cd2IKN2O8,Mr = 679.02,monoclinic,space group P21/n,a = 9.870(5),b = 8.989(4),c = 19.082(10) ,β = 104.581(10)o,V = 1638.5(13) 3,Z = 4,Dc = 2.753 g/cm3,μ = 4.776 mm-1,F(000) = 1272,the final R = 0.0473 and wR = 0.1311 for 2846 observed reflections with I > 2σ(I).Polymer 1 features a 2-D layered structure,in which each edta4-ligand chelates/bridges five adjacent six-/seven-coordinated Cd(Ⅱ) centers with all ten donors(eight oxygen and two nitrogen) involved with coordination.Additional iodide I-ions as counterions are bound to the Cd(Ⅱ) centers in a terminal mode and the potassium K+ ions are located in the layers and surrounded by O and I atoms from neighboring environment.The thermal stability of 1 has been discussed.     

Synthesis,crystal structure and characterization of a 2-D network organic-inorganic hybrid polymer with α-BW_(12)O_(40) ~(5-) as building blocks

A two-dimensional network compound [Ce(DMF)4(H2O)][α-BW12O40]·H2O·(HDMA)2 (HDMA = protoned dimethylamine, DMF = N,N-dimethylformamide) was synthesized from α-H5BW12O40·nH2O, Ce(NO3)3·6H2O and DMF and characterized by IR, UV spectra and TG-DTA. The result of the X-ray single crystal diffraction indicates that the crystal is monoclinic, space group P21/n, with unit cell dimensional: a = 1.1983(3), b = 2.4216(5), c = 1.9517(4) nm, β = 92.91(3)°, Z = 4, R1 = 0.07710, wR2 = 0.1416. Structural analysis indicates that every [Ce(DMF)4(H2O)]3 building block is surrounded by three adjacent [α-BW12O40]5- polyanions, meanwhile, every [α-BW12O40]5- polyanion interconnects with three neighboring [Ce(DMF)4(H2O)]3 subunits, by making use of which two-dimensional network structure can be constructed. The result of thermogravimetric analysis manifests that the title compound has two-stage weight loss and the decomposition temperature of the title polyanionic framework is 560℃ . The electrochemical analysis shows the title polyanion has three-step redox processes in the pH = 4―7 media.     

Synthesis, Crystal Structure and Pyrolysis of a Heterobimetallic Peroxo-titanium（IV） Nitrilotriacetate Complex

A new heterobimetallic nitrilotriacetatoperoxotitanate complex with the formula of [Mn(H2O)5]2[Ti(O2)2O(nta)2]·7H2O (1, C6H6O6N = H3nta) has been isolated in pure crystals. It was characterized by elemental analyses, IR, thermal analysis (TGA) and single-crystal X-ray diffraction. Complex 1 crystallizes in monoclinic, space group C2/c with a = 15.088(3), b = 13.311(3), c = 17.741(4) , β = 100.92(3)°, Z = 4, V = 3498.6(12) 3, Mr = 968.19, Dc = 1.838 g/cm3, μ = 1.266 mm-1, F(000) = 1992, R = 0.0337 and wR = 0.0819. Single-crystal X-ray analysis reveals that the titanium atom is N,O,O',O'-chelated by the nitrilotriacetate and O,O'-chelated by the peroxo group, and is coordinated to the bridging O atom in an overall pentagonal-bipyramidal geometry. The manganese ions in the compound are both 6-coordinated by five water molecules and one bridged carboxylato oxygen atom. A decameric water cluster consisting of a cyclic water hexamer in a boat fashion is also found in complex 1. The TGA and XRD results prove that 1 undergoes facile thermal decomposition to form the mixture of Mn2O3 and TiO2 at 600～800 ℃, and pure MnTiO3 at 900 ℃.     

Synthesis and Structure of a New Gadolinium Porous Complex Assembled from 2,3-Pyrazinedicarboxylic Acid and Ammonia

A new gadolinium porous complex,(NH_4)_2[Gd2(pzdc)4(H_2O)2], was synthesized through hydrothermal reaction of 2,3-pyrazinedicarboxylic acid and Gd(NO3)3·6 H_2O with the pH value adjusted by ammonia. It was characterized by elemental analysis, FT-IR, TGA and further by single-crystal X-ray crystallography. It crystallizes in monoclinic, space group P21/c with a = 14.249(7), b = 15.889(8), c = 12.846(7) ?, β = 95.724(10)°, V = 2894(3) ?3, Z = 4, Dc = 2.385 g/cm3, μ(Mo Ka) = 4.65 mm–1 and F(000) = 1976. 1976 reflections were measured and 6446 independent reflections(Rint = 0.0985) were used in further refinement. The complex exhibits a 3D framework constructed from the [Gd2(pzdc)4(H_2O)2]2-building blocks. It is scarce that the NH4+ cations are located in the channels and balance the charge of anion framework. Furthermore, the ion exchange property of this complex has also been studied. The NH4+ cations can be replaced by Na+ cations, which is an uncommon phenomenon for gadolinium-containing porous complex.     

Synthesis and Crystal Structure of a New Lanthanum(Ⅲ) 4-Cyanobenzoate Complex

A new dinuclear La(Ⅲ) complex [La2(4-cba)4[H(4-cba)2]2(phen)2(H2O)4] (4-Hcba = 4-cyanobenzoic acid and phen = 1,10-phenanthroline) 1 has been synthesized by solvothermal reaction in an ethanol/water mixed solution at 100 ℃ and structurally characterized by single- crystal X-ray diffraction. Crystallographic data: C88H58La2N12O20, Mr = 1881.28, triclinic P(1), a = 7.518(3), b = 17.033(6), c = 17.551(6)(A), α = 115.333(4), β = 92.9910(10), γ = 99.366(5)°, V = 1985.3(12) (A)3, Z = 1, Dc = 1.574 g/cm3, F(000) = 944 μ = 1.145 mm-1, the final R = 0.0281 and wR = 0.0686 for 6708 reflections with Ⅰ ＞2σ(Ⅰ). In 1, two nine-coordinated La(Ⅲ) ions are connected by two 4-cba ligands in a syn-syn bidentate coordination mode, and the other six 4-cba ligands terminate the La(Ⅲ) ions, resulting in an isolated dinuclear structure. Two different types of intramolecular hydrogen bonds, asymmetrical O-H…O and symmetrical O…H…O, exist in the crystal. The title complex molecules are connected through hydrogen bonds and weak π-πstacking interactions to generate a 2-D layered network. The thermogravimetric analysis of 1 has also been discussed.     

Synthesis, crystal structure and magnetic properties of the binuclear copper (II) complex of a new bis (1, 4, 7,10-tetraazacyclodoclecane) ligand

A new binucleating macrocyclic ligand 2,6-bis (1,4,7,10-te-traazacyclododecan-10-ylmethyl)methoxy-benzene (L) and its binuclear copper (II) complex, [ Cu2LBr2 ] (ClO4 )2 · 3H2O (1), was prepared and the structure was determined by X-ray crystallography. Complex 1 crystallizes in monoclinic crystal system, P21/n space group with a = 0.8206(3), b = 2.0892(8), c = 2.3053(7) nm, β=95.83(2)°, V = 3.932 nm3, Mr = 1017.57, Z = 4, Dc= 1.692 g/cm3, and R = 0. 0489, Rw= 0.0552 for 6571 observed reflections with I≥2σ (I). Both of the copper(II) centers are coordinated by four amine nitrogen donors of cyclen subunits and a bromide an-ion, and each copper (II) ion is in a square-pyramidal coordination environment. Variable temperature magnetic susceptibility studies indicate that there exists weak intramolecular an-tiferro-magnetic coupling ( - 2J = 2.06 cm-1) between the two copper(n) centers.     

丙酮酸异烟酰腙四核有机锡配合物的合成、表征及{[nBu2Sn(C9H8N3O3)O]SnBu3n}2的晶体结构

The tetranuclear alkyltin(Ⅳ) compounds {[R2Sn(C9H8N3O3)O]SnR3}2 [R=n-Bu (1), 4-CNC6H4CH2 (2),C6H5CH2 (3), 4-ClC6H4CH2 (4)] were prepared by the reaction of Schiff base ligand pyruvic acid isonicotinyl hydrazone with (R3Sn)2O in the corresponding molar ratio of 1:1. All compounds have been characterized by elemental analysis, IR and ^1H NMR spectra. The crystal structure of compound 1 was determined by X-ray single crystal diffractional analysis. This compound exhibits a dimeric structure containing distannoxane units with two types of the tin atoms. For the first tin atom, it appears to be seven-coordinated with a distorted pentagonal bipyramid geometry, and the other is five-coordinated with a distorted trigonal bipyramidal geometry. The molecules are packed in the unit cell in two-dimensional network structure through an interaction between the N atoms of the pyridine and the tin atoms of an adjacent molecule.     

Crystal structure and thermal decomposition mechanism of the supramolecular complex of barium chloride with inositol

The single crystal of [Ba(H2O)2(C6H12O6)2Cl2] was obtained based on the phase equilibrium results. Its structure was determined by X-ray crystallographic analysis. The crystals are monoclinic and in space group C2/c with a=1.901 7(2) nm, b = 0.682 13(8) nm, c = 0.162 60(2) nm,β=96.593(2)°and V= 2.095 3(4) nm3, Z= 4, DC=1.917 g·cm-3. In its solid state, this supramolecular complex is a three-dimensional network with double layers connected by hydrogen bondings. The molecule structure of [Ba(H2O)2(C6H12O6)2Cl2] has a central barium ion that is coordinated to two water molecules, two chlorides, and four hydroxyls from the two inosi-tols. Losing the coordinating water is controlled by random nucleation and growth mechanism (n = 2/3) and 3-dimensional diffusion mechanism (n=2).     

Crystal structures and thermal decomposition mechanism of four lanthanide complexes with halogen-benzoic acid and 1,10-phenanthroline

This paper describes syntheses and structure determination of four lanthanide complexes [Nd(2-Cl-4-FBA) 3 phen] 2 (1, 2-Cl-4-FBA = 2-chloro-4-fluorobenzoate, phen = 1,10-phenanthroline), [Ln(2,5-DClBA) 3 phen] 2 (Ln = Sm(2) and Tb(3), 2,5-DClBA = 2,5-dichlorobenzoate) and [Sm(2-Cl-4,5-DFBA) 3 (phen)(H 2 O)] 2 (4, (2-Cl-4,5-DFBA = 2-chloro-4,5-difluorobenzo- ate). The complexes were characterized by elemental analysis, infrared and ultraviolet spectra, and X-ray single-crystal diffraction. In the molecular structures of 1 4, two Ln 3+ ions are linked by four carboxyl groups, with two of them in a bridging bidentate mode and the other two in a bridging-chelating tridentate mode, forming four binuclear molecules. In addition, each Ln 3+ ion is also chelated to one phen molecule and one carboxyl group in the complexes, except each Sm 3+ ion in 4 which is bonded to one carboxyl group by unidentate mode and one H 2 O molecule. There are two different coordination polyhedrons for each Nd 3+ ion in the two similar molecular structures of 1 and they are a distorted monocapped square antiprismatic and a distorted tricapped triangular prism conformation, respectively. The coordination polyhedron for each Ln 3+ ion in 2 4 is a nine-coordinated distorted mono-capped square antiprismatic conformation. The complex 3 exhibits green luminescence under the radiation of UV light. The thermal decomposition behaviors of the complexes have been discussed by simultaneous TG/DSC-FTIR technique. The 3D surface graphs for the FTIR spectra of the evolved gases were recorded and the gaseous products were identified by the typical IR spectra obtained at different temperatures from the 3D surface graphs. Meanwhile, we discussed the nonisothermal kinetics of 1 4 by the integral isoconversional non-linear (NL-INT) method.     

Crystal Structure of the 1:2 Stoichiometric Nd: [α-SiW_(11)O_(39)]~(8-): K_5Na_5H_3[Nd(α-SiW_(11)O_(39))_2]·6H_2O

Single-crystal X-ray structural analysis of K5Na5H3[Nd(α-SiW11O39)2]·6H2O (triclinic, space group P1, a = 13.7738(10), b = 19.722(2), c = 20.6647(15) , α = 111.0090(10), β = 105.1740(10), γ = 98.6870(10)o, Z = 2, V = 4867.2(8), Mr = 5914.40, Dc = 4.026, μ = 26.754 mm-1, F(000) = 5076, R = 0.0750 and wR = 0.2077) reveals that two [α-SiW11O39]8- moieties are connected through one Nd atom which is in a square antiprismatic coordination environment by eight oxygen atoms from two [α-SiW11O391]8- moieties. The Nd(Ⅲ ) ion is substituted for a [WO]4+ unit in the "cap" region of the tungsten-oxygen framework of the parent Keggin ion. Disordered Na+ cations and water molecules reside outside these channels, leaving empty pores with an intersecting slot (13 × 10 ).     

Synthesis and Crystal Structure of a New Lanthanum(III) 4-Cyanobenzoate Complex

A new dinuclear La(III) complex [La2(4-cba)4[H(4-cba)2]2(phen)2(H2O)4] (4-Hcba = 4-cyanobenzoic acid and phen = 1,10-phenanthroline) 1 has been synthesized by solvothermal reaction in an ethanol/water mixed solution at 100 ℃ and structurally characterized by single- crystal X-ray diffraction. Crystallographic data: C88H58La2N12O20, Mr = 1881.28, triclinic P1, a = 7.518(3), b = 17.033(6), c = 17.551(6), α = 115.333(4), β = 92.9910(10), γ = 99.366(5)°, V = 1985.3(12)3, Z = 1, Dc = 1.574 g/cm3, F(000) = 944 μ = 1.145 mm–1, the final R = 0.0281 and wR = 0.0686 for 6708 reflections with I > 2σ(I). In 1, two nine-coordinated La(III) ions are connected by two 4-cba ligands in a syn-syn bidentate coordination mode, and the other six 4-cba ligands terminate the La(III) ions, resulting in an isolated dinuclear structure. Two different types of intramolecular hydrogen bonds, asymmetrical O-H…O and symmetrical O…H…O, exist in the crystal. The title complex molecules are connected through hydrogen bonds and weak π-π stacking interactions to generate a 2-D layered network. The thermogravimetric analysis of 1 has also been discussed.