| abstract |
Methods are described for the production of hydrogen-bis(chelato)borates of the general formula H[BL 1 L 2 ] and of alkali metal-bis(chelato)borates of the general formula M [BL 1 L 2 ] where M=Li, Na, K, Rb, Cs n L 1 =—OC(O)—(CR 1 R 2 ) n —C(O)O— or —OC(O)—(CR 3 R 4 )—O—where n=0 or 1, n R 1 , R 2 , R 3 , R 4 independently of one another denote H, alkyl, aryl or silyl, n L 2 =—OC(O)—(CR 5 R 6 ) n —C(O)O— or —OC(O)—(CR 7 R 8 )—O—where n=0 or 1, n R 5 , R 6 , R 7 , R 8 independently of one another denote H, alkyl, aryl or silyl, wherein the respective raw materials are mixed in solid form without the addition of solvents and are reacted. Lithium-bis (oxalato) borate, lithium-bis (malonato)borate, caesium-bis-(oxalato)borate, caesium-bis-(malonato)borate and the mixed salts lithium (lactato, oxalato) borate and lithium(glycolato,oxalato)borate for example may be produced in this way. |