1D chain structure, NLO and luminescence properties of

Chen, Yu‐Biao; Zhang, Jian; Cheng, Jianchun; Yao, Kang; Li, Zhaoji; Yao, Yuan‐Gen

doi:10.1016/j.inoche.2004.08.018

Cited by 65 publications

(8 citation statements)

References 24 publications

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“…The dihedral angle between two pyridyl planes of the bpp is only 20.5(1)°, and the NÁÁÁN distance is only 4.137(3) Å . This angle and bond length are comparable to those observed in [Zn 2 (bpp)(pht) 2 ][28].Crystal structure of complex 2 Complex 2 shows a 2D sheet structure with rhombus grids. Each grid is built up by four [MnL 2 (bipy) 2 ], one uncoordinated H 2 L, and two lattice water molecules.…”

supporting

confidence: 83%

Coordination polymers with adamantanediacetate bridges: syntheses, structures, and magnetic properties

Geng

Lan

et al. 2009

Struct Chem

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Two new coordination polymers, [CoL(bpp)] n (1) and [MnL(bipy)] n Á0.25nH 2 LÁ0.5nH 2 O (2) (H 2 L = 1,3-adamantanediacetic acid, bpp = 1,3-bis(4-pyridyl)propane, bipy = 4,4 0 -bipyridine), were synthesized and characterized by single crystal X-ray diffraction, IR spectroscopy, and thermal analysis. Complex 1 is an one-dimensional (1D) chain structure of Co(II) bridged by L 2-as well as bpp. Complex 2 consists of a two-dimensional (2D) (3,6)-connected topology layer structure. Variable temperature magnetic susceptibility measurements in the range of 2-300 K reveal the existence of weak antiferromagnetic interactions in two complexes with J = -1.74 cm -1 , g = 2.26 for 1 and J = -0.10 cm -1 , g = 1.67 for 2.

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supporting

confidence: 83%

Coordination polymers with adamantanediacetate bridges: syntheses, structures, and magnetic properties

Geng

Lan

et al. 2009

Struct Chem

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“…In recent years, infinite 1D chains are of great interest because they can be used as non-linear optical [1], magnetic [2], and luminescent materials [3], as well as the structural constructing units being further expanded to 2D layers or 3D networks either by covalent bonds [4,5] or by hydrogen bonds, p-p interactions [6][7][8]. In many of these investigating the linear N,N'-donor spacers such as 4,4'-bipyridine ligand and its analogues were used [9,10].…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of triaqua(4,4′-azopyridine-κ2N,N′)(2,3- naphthalenedicarboxylato)cobalt(II) monohydrate, Co(H2O)3(C12O4H6)(C10N4H8) · H2O

Liu¹,

Hu²

2010

Zeitschrift Für Kristallographie - New Crystal Structures

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C 22 H 22 CoN 4 O 8 ,monoclinic, P2 1 /n (no. 14), a =8.2100(3) Å, b =10.6200(3) Å, c =25.4621(7) Å, b =90.618(2)°, V =2219.9 Å 3 , Z =4,Rgt(F) =0.031, wRref (F 2 ) =0.080, T =293 K. Source of materialAm ixed solution of 2,3-naphthalenedicarboxylic acid (H 2 L, 0.05 mmol) and 4,4'-azopyridine (azpy, 0.05 mmol) in the presence of excess 2,6-dimethylpyridine (ca. 0.05 mL for adjusting the pH value to basic condition) in CH 3OH (10 mL) was carefully layered on top of aH 2 Osolution (15 mL) of Co(ClO 4 ) 2. · . 6H 2 O (0.1 mmol) in atest tube. After about two weeks at room temperature, pink single crystals suitable for X-ray analysis were obtained (yield 40 %based on H2L). Elemental analysis -found: C, 49.68 %; H, 4.53 %; N, 10.29 %; calculated for C 22 H 22 CoN 4 O 8 :C,49.92 %; H, 4.19 %; N, 10.58 %. Experimental detailsThe hydrogen atoms of water were refined with d(O-H) = 0.85 Å and U iso (H) =1.2 U eq (O). The hydrogen atoms bound to carbon atoms were included in calculated positions and treated as riding with d(C-H) =0 .93 -0 .96 Å and U iso(H) =1 .2 or 1.5 U eq (C). DiscussionIn recent years, infinite 1D chains are of great interest because they can be used as non-linear optical [1], magnetic [2], and luminescent materials [3], as well as the structural constructing units being further expanded to 2D layers or 3D networks either by covalent bonds [4,5] or by hydrogen bonds, p-p interactions [6][7][8]. In many of these investigating the linear N,N'-donor spacers such as 4,4'-bipyridine ligand and its analogues were used [9,10]. 4,4'-azopyridine (azpy) ligand, the more extended ligand compared with 4,4'-bipyridine, is an ideal connector between metal atoms for the propagation of coordination networks due to its bidentate character [11,12]. The title crystal structure consists of 1D Co(L)(azpy)(H 2 O) 3 chains. The asymmetric unit of the title structure contains one Co(II) center, one L 2-ligand, one azpy ligand, three coordinated water molecules, and one lattice water molecule. Each Co atom is octahedrally coordinated by two Natoms from two different azpy ligands, one Oatom from L 2-ligand, and three Oatoms from water molecules. The Co-Oand the Co-Nbond lengths are in the range of 2.030(1) -2.152(2) Å and 2.206(2) -2.173(2) Å,respectively. The L 2-ligand coordinates Co in am onodentate mode. With regard to pypz ligand, it takes abidentate bridging coordination fashion and links two Co(II) centers with two Nd onors to form anearly linear chain containing alternative Co centers separated by 13.369(5) Å.Inaddition, the adjacent chains are interlinked to form a3 Ds upramolecular strucutre through O-H···O hydrogen bonding interactions between carboxylate Oatoms of Lligands and coordinated water molecules. Moreover, the lattice water molecules were included within the voids of the framework and form O-H···Ohydrogen bonding interactions with Lligands and coordinated water molecules.

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“…Two transition types of electronic excited states, ligand-to-ligand change transfer (LLCT) and ligand-to-metal change transfer (LMCT), may be possible for such complexes. By considering the fact that the photoluminescence of H 2 pzdc and the emissions of previously reported coordination polymers, the emission of 1 may be attributed to the LLCT [24]. It is documented that incorporation of s metal is useful to enhance the luminescence intensity of these complexes.…”

mentioning

confidence: 91%

A new double-Keggin-anion-templated organic–inorganic hybrid architecture: Synthesis, crystal structure and photoluminescence

An¹,

Xu²,

Zheng³

et al. 2010

Inorganic Chemistry Communications

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1D chain structure, NLO and luminescence properties of

Cited by 65 publications

References 24 publications

Coordination polymers with adamantanediacetate bridges: syntheses, structures, and magnetic properties

Coordination polymers with adamantanediacetate bridges: syntheses, structures, and magnetic properties

Crystal structure of triaqua(4,4′-azopyridine-κ2N,N′)(2,3- naphthalenedicarboxylato)cobalt(II) monohydrate, Co(H2O)3(C12O4H6)(C10N4H8) · H2O

A new double-Keggin-anion-templated organic–inorganic hybrid architecture: Synthesis, crystal structure and photoluminescence

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