The versatile ethanol molecule

2020 ◽  
Vol 2020 (5) ◽  
pp. 3
Keyword(s):  
Author(s):  
Md. Lutfor Rahman ◽  
Ajaykumar D. Kulkarni ◽  
Mashitah Mohd. Yusoff ◽  
Huey Chong Kwong ◽  
Ching Kheng Quah

The title indolin-2-one compound, C28H23FN4O·C2H6O, crystallizes as a 1:1 ethanol solvate. The ethanol molecule is disordered over two positions with refined site occupancies of 0.560 (14) and 0.440 (14). The pyrazole ring makes dihedral angles of 84.16 (10) and 85.33 (9)° with the indolin-2-one and indole rings, respectively, whereas the dihedral angle between indolin-2-one and indole rings is 57.30 (7)°. In the crystal, the components are linked by N—H...O and O—H...O hydrogen bonds, forming an inversion molecule–solvate 2:2 dimer withR44(12) ring motifs. The crystal structure is consolidated by π–π interaction between pairs of inversion-related indolin-2-one rings [interplanar spacing = 3.599 (2) Å].


2007 ◽  
Vol 63 (3) ◽  
pp. m845-m846 ◽  
Author(s):  
Ying-Ju Fan ◽  
Le Wang ◽  
Jian-Ping Ma ◽  
Zhong-Xi Sun

Reaction of indium(III) chloride with (E)-1-[1-(2-pyridyl)ethylidene]thiosemicarbazide afforded the title complex, [In(C8H9N4S)Cl2(C2H5OH)]. The ligand is in the enol form coordinating to the InIII atom through one S atom and two N atoms. The InIII atom is further coordinated by two Cl atoms and an ethanol molecule to complete a distorted octahedral coordination geometry.


Author(s):  
Charlie L. Hall ◽  
Jason Potticary ◽  
Hazel A. Sparkes ◽  
Natalie E. Pridmore ◽  
Simon R. Hall

Lamotrigine is an active pharmaceutical ingredient used as a treatment for epilepsy and psychiatric disorders. Single crystals of an ethanolate solvate, C9H7Cl2N5·C2H5OH, were produced by slow evaporation of a saturated solution from anhydrous ethanol. Within the crystal structure, the lamotrigine molecules form dimers through N—H...N hydrogen bonds involving the amine N atoms in the ortho position of the triazine group. These dimers are linked into a tape motif through hydrogen bonds involving the amine N atoms in the para position. The ethanol and lamotrigine are present in a 1:1 ratio in the lattice with the ethyl group of the ethanol molecule exhibiting disorder with an occupancy ratio of 0.516 (14):0.484 (14).


2012 ◽  
Vol 68 (8) ◽  
pp. m1107-m1108 ◽  
Author(s):  
Omoruyi G. Idemudia ◽  
Eric C. Hosten

The title compound, [Co(C17H13N2O2)2(C2H5OH)2], is a CoIIcomplex with two 4-benzoyl-3-methyl-1-phenyl-1H-pyrazol-5-olate (BMPP) ligands and two coordinating ethanol molecules. In the asymmetric unit, there are two half molecules, with the CoIIatoms located on inversion centres. The two cobalt complexes have slightly different geometries and in one, the ethyl group of the ethanol is disordered over two sets of sites [occupancy ratio 0.757 (7):0.243 (7)]. Each BMPP ligand is deprotonated with the negative charge delocalized. The hydroxy group of each ethanol molecule forms hydrogen bonds with a pyrazole N atom in an adjacent BMPP ligand. Weaker C—H...O and C—H...N interactions link the molecules into a three-dimensional structure.


2014 ◽  
Vol 70 (3) ◽  
pp. m90-m91
Author(s):  
Seiya Tanaka ◽  
Akiko Himegi ◽  
Tomomi Ohishi ◽  
Akira Fuyuhiro ◽  
Satoshi Kawata

In the title coordination polymer, [Mn(C6Cl2O4)(C2H5OH)2]n, the MnIIatom and the chloranilate [systematic name: 2,5-dichloro-3,6-dioxocyclohexa-1,4-diene-1,4-bis(olate)] ion lie on crystallographic inversion centers. The geometry around the MnIIatom is a distorted octahedron involving four O atoms of two chloranilate ions and two O atoms from two ethanol molecules. The chloranilate ion serves as a bridging ligand between the MnIIions, leading to an infinite linear chain along theb-axis direction. The chains are linked by O—H...O hydrogen bonds between the apically coordinating ethanol molecule and the chloranilate ion, affording a two-dimensional layer expanding parallel to theabplane.


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