A novel three-dimensional triangular organic–inorganic hybrid network self-assembled by mononuclear [Mn(4,4′-bipyridine)2(H2O)4]2+ cations and rich solvate 4,4′-bipyridine molecules through hydrogen-bonding and π–π interactions †

Author(s):  
Ming-Liang Tong ◽  
Hung Kay Lee ◽  
Xiao-Ming Chen ◽  
Rong-Bin Huang ◽  
Thomas C. W. Mak
2019 ◽  
Vol 131 (35) ◽  
pp. 12165-12170 ◽  
Author(s):  
Shao‐Ping Zheng ◽  
Yu‐Hao Li ◽  
Ji‐Jun Jiang ◽  
Arie van der Lee ◽  
Dan Dumitrescu ◽  
...  

2018 ◽  
Vol 54 (64) ◽  
pp. 8845-8848 ◽  
Author(s):  
Miao Yu ◽  
Youness Benjalal ◽  
Chong Chen ◽  
Nataliya Kalashnyk ◽  
Wei Xu ◽  
...  

Ni adatoms are at the origin of a self-assembled bicomponent molecular system on Au(111).


2019 ◽  
Vol 131 (35) ◽  
pp. 12434-12434
Author(s):  
Shao‐Ping Zheng ◽  
Yu‐Hao Li ◽  
Ji‐Jun Jiang ◽  
Arie van der Lee ◽  
Dan Dumitrescu ◽  
...  

2013 ◽  
Vol 69 (12) ◽  
pp. 1472-1477 ◽  
Author(s):  
Graham Smith

The structures of the hydrated sodium salts of 4-chloro-3-nitrobenzoic acid {poly[aqua(μ4-4-chloro-3-nitrobenzoato)sodium(I)], [Na(C7H3ClNO4)(H2O)]n, (I)} and 2-amino-4-nitrobenzoic acid {poly[μ-aqua-aqua(μ3-2-amino-4-nitrobenzoato)sodium(I)], [Na(C7H5N2O4)(H2O)2]n, (II)}, and the hydrated potassium salt of 2-amino-4-nitrobenzoic acid {poly[μ-aqua-aqua(μ5-2-amino-4-nitrobenzoato)potassium(I)], [K(C7H5N2O4)(H2O)]n, (III)} have been determined and their complex polymeric structures described. All three structures are stabilized by intra- and intermolecular hydrogen bonding and strong π–π ring interactions. In the structure of (I), the distorted trigonal bipyrimidal NaO5coordination polyhedron comprises a monodentate water molecule and four bridging carboxylate O-atom donors, generating a two-dimensional polymeric structure lying parallel to (001). Intra-layer hydrogen-bonding associations and strong inter-ring π–π interactions are present. Structure (II) has a distorted octahedral NaO6stereochemistry, with four bridging O-atom donors, two from a single carboxylate group and two from a single nitro group and three from the two water molecules, one of which is bridging. Na centres are linked through centrosymmetric four-membered duplex water bridges and through 18-membered duplex head-to-tail ligand bridges. Similar centrosymmetric bridges are found in the structure of (III), and in both (II) and (III) strong inter-ring π–π interactions are found. A two-dimensional layered structure lying parallel to (010) is generated in (II), whereas in (III) the structure is three-dimensional. With (III), the irregular KO7coordination polyhedron comprises a doubly bridging water molecule, a single bidentate bridging carboxylate O-atom donor and three bridging O-atom donors from the two nitro groups. A three-dimensional structure is generated. These coordination polymer structures are among the few examples of metal complexes of any type with either 4-chloro-3-nitrobenzoic acid or 4-nitroanthranilic acid.


Author(s):  
Nina R. Marogoa ◽  
D.V. Kama ◽  
Hendrik G. Visser ◽  
M. Schutte-Smith

Each central platinum(II) atom in the crystal structures of chlorido[dihydroxybis(1-iminoethoxy)arsanido-κ3 N,As,N′]platinum(II), [Pt(C4H10AsN2O4)Cl] (1), and of chlorido[dihydroxybis(1-iminopropoxy)arsanido-κ3 N,As,N′]platinum(II), [Pt(C6H14AsN2O4)Cl] (2), is coordinated by two nitrogen donor atoms, a chlorido ligand and to arsenic, which, in turn, is coordinated by two oxygen donor ligands, two hydroxyl ligands and the platinum(II) atom. The square-planar and trigonal–bipyramidal coordination environments around platinum and arsenic, respectively, are significantly distorted with the largest outliers being 173.90 (13) and 106.98 (14)° for platinum and arsenic in (1), and 173.20 (14)° and 94.20 (9)° for (2), respectively. One intramolecular and four classical intermolecular hydrogen-bonding interactions are observed in the crystal structure of (1), which give rise to an infinite three-dimensional network. A similar situation (one intramolecular and four classical intermolecular hydrogen-bonding interactions) is observed in the crystal structure of (2). Various π-interactions are present in (1) between the platinum(II) atom and the centroid of one of the five-membered rings formed by Pt, As, C, N, O with a distance of 3.7225 (7) Å, and between the centroids of five-membered (Pt, As, C, N, O) rings of neighbouring molecules with distances of 3.7456 (4) and 3.7960 (6) Å. Likewise, weak π-interactions are observed in (2) between the platinum(II) atom and the centroid of one of the five-membered rings formed by Pt, As, C, N, O with a distance of 3.8213 (2) Å, as well as between the Cl atom and the centroid of a symmetry-related five-membered ring with a distance of 3.8252 (12) Å. Differences between (2) and the reported polymorph [Miodragović et al. (2013). Angew. Chem. Int. Ed. 52, 10749–10752] are discussed.


2018 ◽  
Vol 74 (12) ◽  
pp. 1717-1726
Author(s):  
Abderezak Addala ◽  
Zouaoui Setifi ◽  
Yukio Morimoto ◽  
Beñat Artetxe ◽  
Takashi Matsumoto ◽  
...  

Structures are reported for six closely related salts of tris(bipyridyl)iron(II) cations, namely tris(2,2′-bipyridine)iron(II) bis(1,1,3,3-tetracyano-2-methoxypropenide) 0.776-hydrate, [Fe(C10H8N2)3](C8H3N4O)2.0.776H2O, (I), tris(2,2′-bipyridine)iron(II) 1,1,3,3-tetracyano-2-(propylsulfanyl)propenide perchlorate, [Fe(C10H8N2)3](C10H7N4S)(ClO4), (II), tris(5,5′-dimethyl-2,2′-bipyridine)iron(II) 1,1,3,3-tetracyano-2-methoxypropenide tetrafluoridoborate ethanol 0.926-solvate, [Fe(C12H12N2)3](C8H3N4O)(BF4).0.926C2H2O, (III), tris(5,5′-dimethyl-2,2′-bipyridine)iron(II) 1,1,3,3-tetracyano-2-ethoxypropenide tetrafluoridoborate, [Fe(C12H12N2)3](C9H5N4O)(BF4), (IV), tris(5,5′-dimethyl-2,2′-bipyridine)iron(II) 1,1,3,3-tetracyano-2-(ethylsufanyl)propenide tetrafluoridoborate, [Fe(C12H12N2)3](C9H5N4S)(BF4), (V), and tris(5,5′-dimethyl-2,2′-bipyridine)iron(II) 1,1,3,3-tetracyano-2-propoxypropenide tetrafluoridoborate, [Fe(C12H12N2)3](C10H7N4O)(BF4), (VI). In compound (I), one of the anions is disordered over two sets of atomic sites with equal occupancies while, in the second anion, just one of the C(CN)2 units is disordered, again over two sets of atomic sites with equal occupancies: the anionic components are linked by multiple C—H...N hydrogen bonds to form a three-dimensional framework. In compound (II), the polynitrile anion is disordered over two sets of atomic sites with occupancies in the approximate ratio 3:1, while the perchlorate anion is disordered over three sets of atomic sites: there are C—N...π interactions between the cations and the polynitrile anion. The polynitrile anion in compound (III) is fully ordered, but the tetrafluoridoborate anion is disordered over two sets of atomic sites with occupancies 0.671 (4) and 0.329 (4): the cations and the tetrafluoridoborate anions are linked by C—H...F interactions to form an interrupted chain. Compounds (IV) and (V) are isostructural and all of the ionic components are fully ordered in both of them: the cations and tetrafluoridoborate anions are linked into C 2 2(12) chains. The polynitrile anion in compound (VI) is disordered over two sets of atomic sites with approximately equal occupancies, and here the chains formed by the cations and the tetrafluoridoborate anions are of the C 2 2(13) type.


2003 ◽  
Vol 3 (1) ◽  
pp. 9-11 ◽  
Author(s):  
Debajyoti Ghoshal ◽  
Tapas Kumar Maji ◽  
Golam Mostafa ◽  
Tian-Huey Lu ◽  
Nirmalendu Ray Chaudhuri

RSC Advances ◽  
2016 ◽  
Vol 6 (23) ◽  
pp. 19155-19159 ◽  
Author(s):  
Uma Maheswara Rao Kunda ◽  
Manabu Yamada ◽  
Hiroshi Katagiri ◽  
Fumio Hamada

Inclusion behavior of pyridine N-oxide in the cavity of hetero-alkali metallic sulfonatothaicalix[4]arene was studied by single crystal X-ray diffraction studies. π–π stacking, S–π interactions and hydrogen bonding were mainly supported this complex.


2013 ◽  
Vol 69 (10) ◽  
pp. 1136-1139 ◽  
Author(s):  
Jureepan Piromchom ◽  
Nanthawat Wannarit ◽  
Chaveng Pakawatchai ◽  
Sujittra Youngme

In the title complex, [Ag2Cd(CN)4(C12H12N2)2]·H2O orcis-[Cd{Ag(CN)2}2(5,5′-dmbpy)2]·H2O, where 5,5′-dmbpy is 5,5′-dimethyl-2,2′-bipyridyl, the asymmetric unit consists of a discrete neutral [Cd{Ag(CN)2}2(5,5′-dmbpy)2] unit and a solvent water molecule. The CdIIcation is coordinated by two bidentate chelate 5,5′-dmbpy ligands and two monodentate [AgI(CN)2]−anions, which are in acisarrangement around the CdIIcation, leading to an octahedral CdN6geometry. The overall structure is stabilized by a combination of intermolecular hydrogen bonding, and AgI...AgIand π–π interactions, forming a three-dimensional supramolecular network.


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