[PDF] Top 20 5,6 Dioxo 1,10 phenanthrolin 1 ium bromide at 120 K
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5,6 Dioxo 1,10 phenanthrolin 1 ium bromide at 120 K
... Because all of the atoms lie on crystallographic mirror planes of the space group Pnma, the constituent ions of (I) are found in well de®ned layers parallel to (010) (Fig. 2), b/2 [3.14890 (5) AÊ] apart. As shown ... See full document
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1 [2 (Dicarboxymethyl) 3 oxocyclopent 4 en 1 yl]pyrrolidin 1 ium bromide hydrate
... of 6-hydroxy-2,2-dimethyl-5-[2-oxo-5-(pyrrolidin-1-yl)cyclopent- 3-en-1-yl]- 4H-1,3-dioxin-4-one, (I), with hydrobromic acid are strongly dependent on the nature of the ...with ... See full document
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Tris(3,4,7,8 tetramethyl 1,10 phenanthrolin 1 ium) hexacyanidocobaltate(III) pentahydrate
... and 1.151 (2) Å, respectively, while the Co-CN bonds are almost linear with the maximum deviation from linearity of 2.9°. The cations and anions are linked alternatively through hydrogen bonds (Table 1), π···π ... See full document
13
4 (2 Methoxyphenyl)piperazin 1 ium 6 chloro 5 isopropyl 2,4 dioxopyrimidin 1 ide
... C10 0.0315 (8) 0.0360 (8) 0.0472 (9) 0.0024 (6) 0.0044 (7) 0.0029 (7) C8 0.0348 (8) 0.0355 (8) 0.0410 (8) 0.0023 (6) 0.0019 (6) −0.0025 (6) C3 0.0374 (8) 0.0347 (9) 0.0734 (13) 0.0048 (7) ... See full document
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Crystal structures of 4 phenylpiperazin 1 ium 6 chloro 5 ethyl 2,4 dioxopyrimidin 1 ide and 4 phenylpiperazin 1 ium 6 chloro 5 isopropyl 2,4 dioxopyrimidin 1 ide
... (II): 6-Chloro-5-isopropyluracil (377 mg, 2.0 mmol), 1-phenylpiperazine (325 mg, ...to 5 ml and allowed to stand at room temperature overnight to yield compound (II) as colourless crystals ... See full document
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Crystal structure of benzyl(methyl)phenyl[(piperidin 1 ium 1 yl)methyl]silane bromide
... Br , contains a chiral silicon atom but crystallizes as a racemate. The C—Si—C bond angles in the range of 103.64 (8)–111.59 (9) are usual for tetrahedral geometry. The piperidine ring shows a regular chair confor- ... See full document
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2,9 Dimethyl 1,10 phenanthrolin 1 ium 2,4,5 tricarboxybenzoate monohydrate
... The asymmetric unit of (I) (Fig. 1) is comprised of a 2,9-dimethyl-1,10-phenanthrolinium cation, a trihydrogen-1,2,4,5- benzenetetracarboxylate anion and a solvent water molecule. The proton transfer from a ... See full document
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6 (2 Hydroxyethyl)benzo[f] 1,7 naphthyridin 6 ium bromide
... The title compound was synthesized from benzo[f][1,7]naphthyridine and 2-bromoethanol. The mixture containing 1.80 g (10 mmol) of benzo[f][1,7]naphthyridine and 1.25 g (10 mmol) of 2-bromoethanol was ... See full document
9
1 [6 (Hydroxymethyl) 2 pyridyl] 3 (2,4,6 trimethylbenzyl) 1H imidazol 3 ium bromide
... [6-(1H-Imidazol-1-yl)pyridin-2-yl]methanol was prepared with the reported methods (Hosseinzadeh et al., 2006). The title compound was synthesized by dissolving ... See full document
7
1,10 Phenanthrolin 1 ium 2 carboxy 6 nitrobenzoate
... in 10 ml) and 1,10-phenanthroline ...in 10 ml). The reaction mixture was stirred at room temperature for 10 min, after which the crystalline product was separated by filtration ... See full document
9
Bis(6 nitro 1,10 phenanthrolin 1 ium) 2,5 dicarboxyterephthalate
... supramolecular networks because it can act not only as an hydrogen bond acceptor but also as an hydrogen bond donor, depending upon the number of deprotonated carboxylate groups present. Proton-transfer compounds of PMA ... See full document
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1:05 – 1:35 Period 5 (30 minutes) 1:40 – 2:10 Period 6 (30 minutes)
... • All students must sign the back of the Policies to be Reviewed for Student Signature packet. • Tear off signature page and return[r] ... See full document
25
Crystal structure and biological evaluation of 4 methylmorpholin 4 ium 1,3 dimethyl 2,6 dioxo 5 (2,4,6 trinitrophenyl) 1,2,3,6 tetrahydropyrimidin 4 olate
... membered ring of the 4-methylmorpholin-4-ium cation has a chair conforma- tion. In the crystal, the cation and anion are linked via an N—H O hydrogen bond. The cation–anion units are linked by a number of C—H O ... See full document
9
4,7 Phenanthrolin 4 ium perrhenate
... A mixture of 4,7-phenanthroline (90.0 mg, 0.5 mmol) and potassium perrhenate (145.0 mg, 0.5 mmol) was dissolved in tetrahydrofuran (20 ml) under nitrogen. The reaction mixture was stirred overnight at room temperature. ... See full document
6
2 Amino 5 chloropyrimidin 1 ium hydrogen maleate
... , the 2-amino-5-chloro- pyrimidinium cation is protonated at one of its pyrimidine N atoms. In the roughly planar (r.m.s. deviation = 0.026 A ˚ ) hydrogen malate anion, an intramolecular O—H O hydrogen bond ... See full document
6
4 Methylpiperazin 1 ium 2 amino 5 iodobenzoate
... ring. Atom H1B is involved in an intramolecular N1— H1B O2 hydrogen bond, while atom H1A is responsible for the formation of an N1—H1A O1 i hydrogen bond (see Table 1 for symmetry code), which links another anion. ... See full document
9
Crystal structure of 3 mesityl 1 [(pyridin 2 yl)methyl] 3,4,5,6 tetrahydropyrimidin 1 ium bromide monohydrate
... A methanol solution (30 ml) of N-mesitylpropane-1,3-diamine (15 mmol, 2.88 g) was added dropwise to a methanol solution (30 ml) of pyridine-2-formaldehyde (15 mmol, 1.61 g) and the mixture was stirred at room temperature ... See full document
8
Ethyl 2,2′′ dioxo 2′,3′,5′,6′,7′,7a′ hexahydroacenaphthene 1 spiro 3′ 1′H pyrrolizine 2′spiro 1′′ acenaphthene 1 carboxylate
... The three N—C distances in (I) differ from each other considerably. Generally, the bond distances and angles of the pyrrolizidine unit are distorted and this can be explained by the spiro character of the compound and ... See full document
11
Crystal structure of 6 ethoxypyridin 1 ium 2 olate
... C1 0.0558 (12) 0.0567 (11) 0.0530 (12) −0.0021 (9) −0.0032 (10) 0.0008 (10) C2 0.0651 (14) 0.0644 (12) 0.0619 (14) 0.0015 (10) −0.0066 (11) 0.0103 (11) C3 0.0624 (14) 0.0641 (13) 0.0792 (17) 0.0075 ... See full document
6
Supramolecular interactions in 2,6 diamino 4 chloropyrimidin 1 ium 5 chlorosalicylate and bis(2,6 diamino 4 chloropyrimidin 1 ium) naphthalene 1,5 disulfonate
... of 5-chlorosalicylate have been reported: 2-methylquinolinium 5-chloro-2-hydroxybenzoate (Zhang et ...4-amino-5-chloro-2,6-dimethylpyrimidinium 5-chloro-2-hydroxybenzoate (Rajam et ... See full document
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