- ACTIVE COMPOUND COMBINATIONS HAVING INSECTICIDAL AND ACARICIDAL PROPERTIES
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The novel active compound combinations comprising a compound of the formula (I-1) or (I-2) and the active compounds (1) to (26) listed in the description have very good insecticidal and acaricidal properties.
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- Macrocyclic plant acaricides
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Compounds of the formula I STR1 in which either R is methyl and there is a double bond in the 9,10-position, or in which R is hydrogen and there is a single bond in the 9,10-position, are highly active against Acarina which damage plants.
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- Tris(beta,beta-dimethylphenethyl) tin compounds
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A compound represented by the formula STR1 wherein R represents an alkyl group having 7 to 11 carbon atoms, a phenyl group which may be substituted by a lower alkyl group or a halogen atom, or a group of the formula STR2 in which X represents a hydrogen o
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- STERIC EFFECTS IN NEOPHILTIN(IV) CHEMISTRY
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The stability and self-association in solution of (neophyl3Sn)2O, neophyl3SnOH, and (neophyl3Sn)2CO3 (neophyl = C6H5(CH3)2CCH2) have been examined by 119Sn NMR.The presence of Sn,Sn spin coupling through oxygen (2J(119Sn,117Sn)) has been used to distinguish between the distannoxane and stannol.Facile dehydration prevents the isolation of neophyl3SnOH from solution at room temperature and the equilibrium constant for H2O + (neophyl3Sn)2O 2neophyl3SnOH is 0.3 at 304 K.These observations are in sharp contrast with a previous report that the sterically bulky neophyl ligands render neophyl3SnOH stable toward dehydration. 1J(119Sn,13C) observed for neophyl3SnOH and (neophyl3Sn)2CO3 indicates that these compounds, unlike their n-alkyl-substituted homologues, are unassociated in solution, a result attributed to the steric bulk of the neophyl ligand.
- Lockhart, Thomas P.
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p. 179 - 186
(2007/10/02)
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