Phosphinous acids formulae

Fluorinated phosphinic and phosphonic acid derivatives Perfluoro derivatives of alkyl phosphonic acid CnF2n+1-P(0)(0H)2 and alkyl phosphinic acid CnF2n+i(CmF2m+1)-P(0)0H (n = m or n m) shown with their general structural formulae in Fig. 2.11.29(1) and (II) were examined by negative ESI- and APCI-FIA-MS. These anionic surfactant compounds contained perfluoro alkyl chains [2,22,25]. By analogy with their behaviour in the TSI-FIA-MS(—) process [25], the phosphonic acid formed [M — H] ions at m/z 399 and 499... 

In support of the above formulae for phosphonous acid (XII) ad phosphinic acid (XI) Professor Ingold2 kindly supplied the following note ... 

An objection sometimes raised against the above system was that phosphonous acid contains quinquivalent phosphorus, whereas phos-phimc acid contains tervalent phosphorus, and it was argued that this contravened the usual -ic for the higher valency state and -ous for the tower valency state (cf. ferric Fe + and ferrows Fe2. For this reason the formulae for phosphonous acid and phosphinic acid were interchanged and with these amendments the system continued to be used for a further period in this country. 

A complex of formula [Cr(AEP)0H]2,4H20 (AEP = 2-aminoethyl phosphinic acid) has been prepared and characterized by spectroscopic and magnetic studies. A dimeric stereochemistry with two OH bridges is confirmed, with /i = 3.37 BM per Cr atom supporting this stereochemical assignment. The reaction of Cr(CO) with pyridine-2-carboxylic acid (picH) in boiling MeOH affords Cr(pic)3. ... 

In the oxoacids above, each hydrogen atom is attached to oxygen in the free acid, and the number of H atoms corresponds to the basicity of the acid. However, this is not always the case e.g. although phosphinic acid has the formula H3PO2, there is only one O—H bond (structure... 

In a similar manner l-anisiflideneindenyl-2- phosphinic acid, M.pt. 192° C., and l-piperonylideneindenyl-2-phosphimc acid, M.pt. 194° C., are isolated as yellow needles showing decomposition on melting. The formulae of these two compounds are as follows —... 

Although the formula of phosphinic acid is typically written as H3PO2, it has the structure shown below ... 

Bis (2,4,4,-trimethylpentyl) phosphinic acid CAS 83411-71-6 EINECS/ELINCS 280-445-7 Synonyms Diisooctylphosphinic acid Phosphinic acid, bis (2,4,4-trimethylpentyl)-Empihcal C16H35O2P Formula [(CH3)3CCH2CHCH3CH2]2POOH Properties Liq. m.w. 290.4 sp.gr. 0.916 ref. index 1.460... 

Synonyms Benzimidazole, 2-(4-thiazolyl)-, monophosphinate Phosphinic acid, compd. with 2-(4-thiazolyl)-1H-benzimidazole (1 1) Empirical C10H10N3O2PS Formula C10H7N3S H3O2P Properties M.w. 267.26... 

Carboxy phosphinic acid compoimd The carboxy phosphinic acid compound is represented by the following chemical formula (1) ... 

Sodium hypophosphite CAS 7681-53-0 EINECS/ELINCS 231-669-9 Synonyms Phosphinic acid sodium salt Sodium phosphinate Empirical H2Na02P Formula NaH2P02... 

All phosphoms oxides are obtained by direct oxidation of phosphoms, but only phosphoms(V) oxide is produced commercially. This is in part because of the stabiUty of phosphoms pentoxide and the tendency for the intermediate oxidation states to undergo disproportionation to mixtures. Besides the oxides mentioned above, other lower oxides of phosphoms can be formed but which are poorly understood. These are commonly termed lower oxides of phosphoms (LOOPs) and are mixtures of usually water-insoluble, yeUow-to-orange, and poorly characteri2ed polymers (58). LOOPs are often formed as a disproportionation by-product in a number of reactions, eg, in combustion of phosphoms with an inadequate air supply, in hydrolysis of a phosphoms trihahde with less than a stoichiometric amount of water, and in various reactions of phosphoms haUdes or phosphonic acid. LOOPs appear to have a backbone of phosphoms atoms having —OH, =0, and —H pendent groups and is often represented by an approximate formula, (P OH). LOOPs may either hydroly2e slowly, be pyrophoric, or pyroly2e rapidly and yield diphosphine-contaminated phosphine. LOOP can also decompose explosively in the presence of moisture and air near 150° C. 

Chemical Designations - Synonyms-. APO Phosphoric acid triethileneimide Triethylenephosphor-amide Tris (1-aziridinyl) phosphin oxide Chemical Formula-. (CH2CHiN)3PO or C HjjNjPO. Observable Characteristics - Physical State (as normally shipped)-. Solid Color. > ite Odor. Data not available. 

The literature3 contains some limited work on decaborane-based polymer systems. Typically, most utilize the Lewis acid/base reaction between decaborane (Lewis acid, B10H12) and amines and phosphines (Lewis bases, L) resulting in the formation of complexes (see scheme 2) having the general formulas B10H12L2. For example, the... 

In aqueous solution iodine reacts with phosphine according to the empirical formula (30) to form phosphorous acid and hydrogen iodide ... 

What compounds of phosphorus with hydrogen are known Compare the properties of phosphine (hydrogen phosphide) and ammonia. Write the coordination formulas of the phosphonium ion and hypo-phosphorous acid. 

Arsenic Phosphides.—Black or brown products of indefinite character, to which have been ascribed the formulae AsaP 4 and AsP,5 have been obtained by various methods, such as (1) by heating the elements together,6 (2) by allowing phosphorus to stand in solutions of arsenious acid,7 and (3) by the action of phosphine on arsenic halides.8 The properties of these substances resemble in general those which would be possessed by mixtures of the two elements thus, they burn in air to give the mixed oxides, decompose on heating with vaporisation of first phosphorus and then arsenic, and are oxidised by nitric acid. 

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