Dimensionality of coordination polymers decided by the type of hybridization of the central carbon atom of the solvent molecule that coordinates to an alkali metal cation: from discrete to 3D networks based on a gold(iii) bis(dithiolene) complex

CrystEngComm ◽  
2010 ◽  
Vol 12 (11) ◽  
pp. 3409 ◽  
Author(s):  
Ramababu Bolligarla ◽  
Samar K. Das
Keyword(s):  
Carbon Atom ◽  
Alkali Metal ◽  
Coordination Polymers ◽  
Metal Cation ◽  
Alkali Metal Cation ◽  
Solvent Molecule ◽  
Central Carbon Atom ◽  
Central Carbon ◽  
3D Networks

scholarly journals Crystal structures of [IrCl2(NHCHPh)((dppm)(C(N2dppm))-κ3 P,C,P′)]Cl·5.5MeCN and [IrI(NHCHPh)(((dppm)C(N2))-κ2 P,C)(dppm-κ2 P,P′)]I(I3)·0.5I2·MeOH·0.5CH2Cl2: triazene fragmentation in a PCN pincer iridium complex

2019 ◽  
Vol 75 (2) ◽  
pp. 179-184 ◽  
Author(s):  
Bettina Pauer ◽  
Gabriel Julian Partl ◽  
Stefan Oberparleiter ◽  
Walter Schuh ◽  
Holger Kopacka ◽  
...  
Keyword(s):  
Carbon Atom ◽  
Rotation Axis ◽  
Complex Cation ◽  
Solvent Molecule ◽  
Membered Ring ◽  
Iridium Complex ◽  
Pincer Ligand ◽  
Central Carbon Atom ◽  
Central Carbon ◽  
Pcp Pincer

The structure of [IrCl2(C58H51N3P4)]Cl·5.5CH3CN or [IrCl2(NHCHPh)(((dppm)C(N2dppm))-κ 3P,C,P)]Cl·5.5CH3CN [3, dppm = bis(diphenylphosphino)methane; systematic name: dichlorido(1,1,3,3,7,7,9,9-octaphenyl-4,5-diaza-1,3λ5,7λ4,9-tetraphosphanona-3,5-dien-6-yl-κ2 P 1,P 9)(phenylmethanimine-κN)iridium(III) chloride acetonitrile hemihendecasolvate], resulting from an oxygen-mediated cleavage of a triazeneylidenephosphorane ligand producing a diazomethylenephosphorane and a nitrene moiety, which in turn rearrange via a Staudinger reaction and a 1,2-hydride shift to the first title complex, involves a six-coordinate IrIII complex cation coordinated by a facial PCP pincer ligand, a benzaldimine and two chlorido ligands. The pincer system features a five- and a seven-membered ring, with the central divalent carbon of the PCP pincer ligand being connected to a phosphine and a diazophosphorane. The chlorido ligands are positioned trans to the central carbon atom and to the phosphorus donor of the seven-membered ring of the pincer system, respectively. A chloride ion serves as counter-ion for the monocationic complex. The structure of [IrI(C26H22N2P2)(C26H22P2)(C6H7N)]I(I3)·0.5I2·CH3OH·0.5CH2Cl2 or [IrI(NHCHPh)((dppm)C(N2)-κ 2P,C)(dppm-κ 2P,P′)]I(I3)·0.5I2·CH3OH·0.5CH2Cl2 {4, systematic name: (4-diazo-1,1,3,3,-tetraphenyl-1,3λ4-diphosphabutan-4-yl-κP 1)iodido[methylenebis(diphenylphosphine)-κ2 P,P′](phenylmethanimine-κN)iridium(III) iodide–triiodide–dichloromethane–iodine–methanol (2/2/1/1/2)}, accessed via treatment of the triazeneylidenephosphorane complex [Ir((BnN3)C(dppm)-κ 3P,C,N)(dppm-κ 2P,P′)]Cl with hydroiodic acid, consists of a dicationic six-coordinate IrIII complex, coordinated by a bidentate diazomethylenephosphorane, a benzaldimine, a chelating dppm moiety and an iodido ligand. The phosphorus atoms of the chelating dppm are trans to the central carbon atom of the diazomethylenephosphorane and the iodide ligand, respectively. Both an iodide and a triiodide moiety function as counter-ions. The acetonitrile solvent molecules in 3 are severely disordered in position and occupation. In 4, the I3 − anion is positionally disordered (ratio roughly 1:1), as is the I− anion with a ratio of 9:1. The dichloromethane solvent molecule lies near a twofold rotation axis (disorder) and was refined with an occupancy of 0.5. Another disorder occurs for the solvent methanol with a 1:1 ratio.

Conformational effect on the preferential binding of alkali metal cation with crown ether: A molecular level investigation

2009 ◽  
Vol 12 (1-3) ◽  
pp. 93-99 ◽  
Author(s):  
Sulagna De ◽  
Sk. Musharaf Ali ◽  
M.R.K. Shenoi ◽  
Sandip K. Ghosh ◽  
Dilip K. Maity
Keyword(s):  
Crown Ether ◽  
Alkali Metal ◽  
Metal Cation ◽  
Molecular Level ◽  
Alkali Metal Cation ◽  
Conformational Effect ◽  
Preferential Binding

Dynamic chiral-at-metal stability of tetrakis(d/l-hfc)Ln(iii) complexes capped with an alkali metal cation in solution

2012 ◽  
Vol 41 (22) ◽  
pp. 6696 ◽  
Author(s):  
Yiji Lin ◽  
Fang Zou ◽  
Shigang Wan ◽  
Jie Ouyang ◽  
Lirong Lin ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Metal Cation ◽  
Alkali Metal Cation
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