Nitrogen group arsenic

Compare this process with sulphonation and nitration, and note especially the difference between nitrogen and arsenic, which are introduced respectively as the neutral nitro-group and the corresponding hydrate, viz. the dibasic arsinic acid group. 

FIGURE 15.1 The elements of Group 15. Back row, from left to right liquid nitrogen, phosphorus, arsenic. Front row antimony and bismuth. 

Optical activity was first observed with organic compounds having one or more chiral carbon atoms (or centres) (i.e. a carbon substituted with four different groups). In the structures (1) to (17) the chiral carbons are specified with an asterisk. Subsequently compounds having chiral centres at suitably substituted heteroatoms (e.g. silicon, germanium, nitrogen, phosphorus, arsenic, sulphur, etc.) were also synthesised. Molecular dissymmetry, and hence chirality, also... 

Saada, A., Breeze, D., Crouzet, C. et al. (2003) Adsorption of arsenic (V) on kaolinite and on kaolinite-humic acid complexes role of humic acid nitrogen groups. Chemosphere, 51(8), 757-63. 

Some oxygen-containing heteroelement compounds, in which other elements are not coordinatively active, could be attributed to O-ligands. This group includes in particular nitrogen, phosphorus, arsenic, and antimony organo-oxides [1,3,11,112], The most studies amongst them are phosphine oxides, on whose basis complexes, with structure 295, of practically all metals have been obtained [1, vol.2 3] ... 

Several non-charged nucleophiles of nitrogen, phosphorus, arsenic, and sulphur displace the phenyliodonio group from iodonium ylides, with formation of new ylides, according to the generalized scheme ... 

Other chemists then showed that the elements could be classified into groups coi sisiing of hiore than three similar elements. Fluorine was added to the tri ad of "chlorine, bromine, and iodine, and magnesium to the triad calcium, strontium, barium. Oxygen, sulfur, selenium, and tellurium had been classed as one family, and nitrogen, phosphorus, arsenic, antimony, and bismuth as another family ot elements by 1854. 

Group V Elements Nitrogen Phosphorus Arsenic Antimony Bismuth... 

Nitrogen Substitutions. Nitrogen, phosphorus, arsenic, and antimony, form a group of equivalent elements, and do not appear to have any analogy with other bodies. We may say, that they do not exercise any action upon organic substances,—that they do not combine directly with them,—and that they do not even displace one another mutually from their combinations. Lastly, they all possess the remarkable property of originating alkaloids. 

The Group VA is the nitrogen family. The group consists of nitrogen, phosphorus, arsenic, antimony, and bismuth. Nitrogen is a diatomic, colorless, and odorless gas, and is not a very reactive element. The Group VA elements have a valence shell configuration of os np ... 

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