Abstract:
Organic solvents containing less than 0.2 atom percent of .sup.13 C and which preferably are at least partially deuterated are produced from .sup.13 C-depleted gaseous carbon compounds and are advantageously employed as solvents for .sup.13 C NMR spectroscopy.
Abstract translation:含有少于0.2原子%的13 C且优选至少部分氘代的有机溶剂由13C-贫化的气态碳化合物制备,并且有利地用作13 C NMR光谱的溶剂。
Abstract:
Organic solvents containing less than 0.2 atom percent of .sup.13 C and which preferably are at least partially deuterated are produced from .sup.13 C-depleted gaseous carbon compounds and are advantageously employed as solvents for .sup.13 C NMR spectroscopy.
Abstract translation:含有少于0.2原子%的13 C且优选至少部分氘代的有机溶剂由13C-贫化的气态碳化合物制备,并且有利地用作13 C NMR光谱的溶剂。
Abstract:
Liquid Crystal Molecules Comprising Hydroazulene Structures Compounds of formula (I); R1i-A1i-(Z2i-A2i)m-(Z3i-A3i)n-(Z4i-A4i)o-R2i (i) wherein at least one of the divalent groups Ai is derived from at least partially hydrogenated azulene, R1i and R2i being hydrogen, an optionally substituted alkyl or alkylene residue, R2i also standing for —CN, —N═C═S, —F, —Cl, —SF5, —CF3, —CHF2, CH2F—O—CF3, —O—CHF2, —O—CH2F, —O—CF2—CF2H, or —O—C2F5, A1i, A2i, A3i and A4i being partially or completely hydrogenated 2,6-azulene, trans-1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-14-phenylene, 2,3- and 2,6-difluoro-1,4-phenylene, and 3,5-difluoro-1,4-phenylene, pyrimidine-2,5-diyl, and 1,4-dioxane-2,5-diyl, Z1i, Z2i, Z3i and Z4i being a single bond, —CH2—CH2—, —CF2—CF2—, an ester bond —CO—O—, trans and —CF2—O—, m, n and 0 being independently 0, 1, or 2, liquid crystal media comprising these compounds and liquid crystal displays made with mixtures comprising the novel compounds.
Abstract:
The invention relates to a process for the preparation of cyclic perfluoroalkanebis(sulfonyl)imides and salts thereof.The new compound lithium cyclo-difluoromethanebis(sulfonyl)imide is outstandingly suitable as a conductive salt in non-aqueous electrolytes for lithium secondary batteries.
Abstract:
The invention relates to oxide particles which have a surface modification by covalently bonded organic groups which allow covalent bonding into polymer materials. These particles are particularly advantageous in their use as fillers or modifying agents in polymer materials, in particular polymer films.
Abstract:
In a process for the production of thin films and epitaxial layers by gas-phase deposition, intramolecularly stabilized organometallic compounds are employed as a source of metal.
Abstract:
The invention relates to organometallic compounds which are intramolecularly stabilized, and also to their use for the production of thin films and epitaxial layers by gas-phase deposition.
Abstract:
The invention relates to cyclic organometallic compounds which are intramolecularly stabilized and also to their use to produce thin films and epitaxial layers by gas-phase deposition.
Abstract:
A Cyclohexylbiphenyl of the formula ##STR1## wherein R.sub.1 is alkyl of 1-12 C atoms;R.sub.6 is alkyl or alkoxy each of 1-12 C atoms, CN or fluorine; andR.sub.2, R.sub.3, R.sub.4 and R.sub.5 each is hydrogen or fluorine, with the proviso that at least one, but not more than two of R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are fluorine.
Abstract:
A Cyclohexylbiphenyl of the formula ##STR1## wherein R.sub.1 is alkyl of 1-12 C atoms;R.sub.6 is alkyl or alkoxy each of 1-12 C atoms, CN or fluorine; andR.sub.2, R.sub.3, R.sub.4 and R.sub.5 each is hydrogen or fluorine, with the proviso that at least one, but not more than two of R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are fluorine.