C. H. (Charles Harold)
Redetermination of 8 tosyloxyquinoline at 100 K: supramolecular aggregation through weak C–H⋯O and C–H⋯N interactions
... weak C—H···O and C—H···N interactions. The range of H···O distances (Table 2) found in (I) agrees with those found for weak C—H···O bonds (Desiraju & Steiner, ...
12
Methyl 4 tosyloxybenzoate: supramolecular aggregation through C—H⋯O, C—H⋯π and π–π interactions
... symmetrical hydrogen bonded chelate (Desiraju, 1989) and is also observed in similar structures (Vembu et al., 2003, 2003b,c). There are several other weak C—H···O interactions (Fig. 2) and ...
10
Rapid increase of molecular complexity through C–H and C–C bond activation
... the C–C–C bond angle in cyclobutane is found to be ...many C–H bonds are eclipsing which results in high torsional ...the C–C cleavage of ...typical C–C bond ...
325
Bracing copper for the catalytic oxidation of C-H bonds
... the C H bonds which both LPMOs and pMMOs oxidise are strong and unactivated, the postulate of a histidine brace coordinating a single copper is inspiring coordination chemists interested in preparing ...
18
4 Bromophenyl 4 toluenesulfonate: supramolecular aggregation through weak C—H⋯O and C—H⋯π interactions
... weak C—H O interactions (Table 2). The range for the H O distances found in (I) agree with those found for weak C—H O bonds (Desiraju & Steiner, ...
7
Mechanisms of C H Bond Activation by Platinum(II)
... and C–H bond activation. A number of general mechanisms for C–H activation by transition metal complexes have been identified, including (1) electrophilic activation, (2) oxidative addition, ...
142
Oxidative β-C–H sulfonylation of cyclic amines
... In conclusion, we have developed a straightforward process for the b-C–H functionalization of piperidines. The reactions combine piperidines and sodium sulnates, under the action of NIS, to provide ...
6
4 Dimethylaminopyridinium 2,4 dinitrophenolate: supramolecular aggregation through N—H⋯O, C—H⋯O, C—H⋯π and π–π interactions
... In the crystal structure of (I) (Fig. 4), the molecules are stacked in layers held together by pairs of π–π interactions, with a distance of 3.697 (1) Å between the centroids of the pyridinium ring and the benzene ring ...
13
(Benzoylmethyl)triphenylphosphonium iodide: supramolecular zigzag chains via C—H⋯O hydrogen bonding stabilized by C—H⋯I interactions
... parameters in (I) resemble those of the isomorphous nitrate salt (Pbca with Z = 8; Baby Mariyatra et al., 2002), but differ from the parent ylide (Kalyanasundari et al., 1994). The crystal structure can be best described ...
12
C–H functionalization for hydrogen isotope exchange
... The wide range of applications involving hydrogen isotopes makes their installation an important and continuing challenge to synthetic chemists. Despite the apparent simplicity of the transformation, hydrogen isotope ...
28
Highly fluorinated naphthalenes and bifurcated C–H⋯F–C hydrogen bonding
... for C – H ⋯ F hydro- gen ...layers C – H groups from one molecule interact exclusively with C – F groups from neighbouring mole- cules ...
10
N,N′ Diphenylethylenediamine, an N—H⋯π and C—H⋯π bonded network
... total, every molecule is involved in four interactions of this kind. Like the N—H interactions, the C—H -interac- tions propagate in two dimensions, giving rise to layers. These layers are different ...
6
Triphenyl(benzoylmethyl)phosphonium hexabromodicadmate(II): supramolecular aggregation through extensive C—H⋯Br and C—H⋯O interactions
... interactions link cations and anions along the c axis, forming then layers perpendicular to the a axis, as shown in Fig. 2. These layers are linked along the a axis through other weaker C—H···Br ...
11
Increasing Catalyst Efficiency in C−H Activation Catalysis
... TON of 9 900. The efficiency of this reaction was attributed to a dual role of the Au(III) catalyst, which was tentatively proposed to both promote C−H activation by electrophilic auration to arylgold ...
13
Selectivity of C-H activation and competition between C-H and C-F bond activation at fluorocarbons
... random C-H bond, followed by ring-walking to the preferred ...The C-F activation reaction has a free energy of activation that is estimated to be ...for C-H activation at 298 K. ...
128
Continuous Flow for the Photochemical C‐H Amination of Arenes
... Abstract: The direct C-H amination of arenes by aminium radicals generated by photolysis of N-chloroamines is demonstrated under continuous flow conditions. The reactions proceed with comparable efficiency ...
6
1 (4 Methylphenylsulfonyl) 1H 1,2,3 benzotriazole: sheets built from C—H⋯N, C—H⋯O and C—H⋯π(arene) hydrogen bonds
... The molecules of (I) are linked by one C—H N and one C—H O hydrogen bond (Table 2) into chains of edge-fused rings. Aryl atom C16 in the molecule at (x, y, z) acts as hydrogen-bond donor to ...
7
Iridium-catalysed ortho-H/D and -H/T exchange under basic conditions : C-H activation of unprotected tetrazoles
... Under these selected reaction conditions, the scope of this method for C-H activation and labelling of unprotected 2- aryltetrazoles was investigated (Scheme 2). Satisfactorily, a range of electron-donating ...
68
Phenyl 4 toluenesulfonate: supramolecular aggregation through weak C—H⋯O and C—H⋯π interactions
... weak C—H O interactions (Table 2). The H O distances found in (I) agree with those found for weak C—H O bonds (Desiraju & Steiner, ...
7
4 Chlorophenyl 4 toluenesulfonate: supramolecular aggregation through C—H⋯O, C–H⋯Cl and C—H⋯π interactions
... weak C—H···O interactions. The range for the H···O distances (Table 2) agree with those found for weak C—H···O bonds (Desiraju & Steiner, ...
13