Synthesis and near infrared luminescence of a tetrametallic Zn2Yb2 architecture from a trinuclear Zn3L2 Schiff base complex

Yang, Xiaoping; Jones, Richard A.; Lynch, Vince; Oye, Michael M.; Holmes, A. L.

doi:10.1039/b416695g

Cited by 100 publications

(30 citation statements)

References 19 publications

(2 reference statements)

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“…These entities are of great interest for their aesthetically beautiful structures [2][3][4], unexpected transformations [5][6][7] and potential applications in magnetism [8][9][10], luminescence [11][12][13][14][15], catalysis [16][17][18], etc. Paramagnetic transition metal CCs are of intense interest and have attracted a vast amount of attention since the discovery that some CCs behave as single-molecule magnets (SMMs) [19][20][21].…”

Section: Introduction and Reviewmentioning

confidence: 99%

Topological insights in polynuclear Ni/Na coordination clusters derived from a schiff base ligand

2016

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Section: Introduction and Reviewmentioning

confidence: 99%

Topological insights in polynuclear Ni/Na coordination clusters derived from a schiff base ligand

2016

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“…Transition metal complexes of Schiff bases have been extensively investigated for many years due to their novel structures and potential applications in many fields [1][2][3][4]. These compounds play an important role in the development of coordination chemistry related to catalysis and enzymatic reactions, magnetism and molecular architecture.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of bis(3,5-dichloro-N-n-propylsalicylaldiminato- N,O)zinc(II), Zn(C10H10Cl2NO)2

Zhang¹,

Dong²,

Wang³

et al. 2011

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of material 3,5-Dichlorosalicylaldehyde (382 mg, 2m mol) and n-propylamine (118 mg, 2mmol) were dissolved in an aqueous ethanol solution (25 mL). The mixture was stirred at room temperature for 2htogive aclear yellow solution, which was added to amethanol solution (10 mL) of Zn(NO 3 ) 2 · 6H 2 O( 595 mg, 2m mol). The mixture was stirred for another 10 min at room temperature to give ayellow solution and then filtered. The yellow single crystals suitable for X-ray analysis were obtained by slowly evaporating the above filtrate at room temperature. The crystals were isolated and dried in avacuum desiccator containing anhydrous CaCl 2 (yield 68 %). Elemental analysis -found: C, 45.41 %; H, 3.90 %; N, 5.11 %; calculated for C 20H20ZnCl4N2O2:C,45.53 %; H, 3.82 %; N, 5.31 %. IR data are available in the CIF. Experimental detailsAll the Hatoms were placed in geometrically idealized positions and constrained to ride on their parent atoms, with d(C-H) = 0.93 -0.97 Å,and with U iso (H) =1.2 or 1.5 U eq (C). DiscussionTransition metal complexes of Schiff bases have been extensively investigated for many years due to their novel structures and potential applications in many fields [1][2][3][4]. These compounds play an important role in the development of coordination chemistry related to catalysis and enzymatic reactions, magnetism and molecular architecture. Zinc(II) chelate complexes were studied as models for the active site of carbonic anhydrase and other hydrolytically active enzymes [5,6]. The role of zinc(II) structural properties in protein folding is also extensively studied [7][8][9][10]. The title complex is am ononuclear zinc(II) complex with a Schiff-base ligand. Zn(II) atom is four-coordinated by two N atoms and two Oa toms from two Schiff-base ligands in ad istorted tetrahedral arrangement. The dihedral angle between the coordination planes (N1/Zn1/O1 and N1A/Zn1A/O1A) is 84.23(5)°,a nd the dihedral angles between the plane sixmembered ring (C1/C2/C3/C4/C5/C6) and the plane N1/Zn1/O1 is 17.91(8)°(symmetry codes A: -x,y,½-z). The bond angles ∠O1-Zn1-O1 and ∠N1-Zn1-N1 are 122.4(1)°and 119.0(1)°, respectively. The other angles subtended at the Zn(II) ion are in the range of 95.12(7)°-113.57(7)°.The average bond lengths of Zn-Oand Zn-Nare 1.923(2) and 2.002(2) Å,respectively.

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“…This is due to their novel structures and potential applications in many fields [1][2][3][4][5][6][7]. The title compound is the mononuclear zinc(II) complex of Schiff base.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of bis(3,5-dibromo-N-benzylsalicylaldiminato)zinc(II), Zn(C14H10Br2NO)2

Cai¹,

Wang²,

Qin³

et al. 2010

Zeitschrift Für Kristallographie - New Crystal Structures

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C 28H20Br4N2O2Zn, monoclinic, C12/c1(no. 15Source of material 3,5-Dibromosalicyladehyde (56 mg, 0.2 mmol) and benzylamine (21 mg, 0.2 mmol) were dissolved in an aqueous acetonitrile solution (5 mL). The mixture was stirred for 5min to give an orange solution, which was added to am ethanol solution (1 mL) of Zn(NO 3)2 · 6H2O(30 mg, 0.1 mmol). The mixture was stirred for another 5min at room temperature to give ared solution and then filtered. The filtrate was kept in air for 5d,forming yellow prismlike crystals. The crystals were isolated, washed three times with distilled water and dried in avacuum desiccator containing anhydrous CaCl 2 (yield 73 %). All reagents and solvents were used as obtained without further purification. Experimental detailsAll hydrogen atoms were positioned geometrically (d(C-H) = 0.93 -0.97 Å), and refined as riding with U iso(H) =1.2 Ueq(C). DiscussionTransition metal complexes of Schiff-base ligands have been extensively investigated in the past decades. This is due to their novel structures and potential applications in many fields [1][2][3][4][5][6][7]. The title compound is the mononuclear zinc(II) complex of Schiff base. Zn(II) atom has adistorted tetrahedral coordination. Analogous tetrahedral Zn(II) species were also previously reported in the literature [8][9][10]. The zinc(II) atom is four-coordinated by two Natoms and two Oatoms from two Schiff base ligands (figure, top). The average bond distances of Zn-Oa nd Zn-Na re 1.932(2) and 2.017(3) Å,respectively. The angles subtended at the Zn(II) ion in (ZnN 2O2)isinthe range of 95

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Synthesis and near infrared luminescence of a tetrametallic Zn2Yb2 architecture from a trinuclear Zn3L2 Schiff base complex

Abstract: Near infrared luminescence is observed in tetrametallic [Zn2Yb2L2(mu-OH)2Cl4].2MeCN which is obtained from the Zn3 Schiff-base complex [Zn3L2(NO3)2].MeOH, (H2L =N,N'-bis(5-bromo-3-methoxysalicylidene)propylene-1,3-diamine).

Cited by 100 publications

References 19 publications

Topological insights in polynuclear Ni/Na coordination clusters derived from a schiff base ligand

Topological insights in polynuclear Ni/Na coordination clusters derived from a schiff base ligand

Crystal structure of bis(3,5-dichloro-N-n-propylsalicylaldiminato- N,O)zinc(II), Zn(C10H10Cl2NO)2

Crystal structure of bis(3,5-dibromo-N-benzylsalicylaldiminato)zinc(II), Zn(C14H10Br2NO)2

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