Liquid crystalline medium

A liquid-crystalline medium having a nematic phase, the medium comprising one or more compounds of formula I

• in which
• R1 is an alkyl radical having 1 to 15 C atoms, wherein one or more CH2 groups, including terminal C atoms, in this radical may each be replaced, independently of one another, by —C≡C—, —CH═CH—,
• —O—, —S—, —(CO)—O— or —O—(CO)— in such a way that O or S atoms are not linked directly to one another, and in which, in addition, one or more H atoms may be replaced by F or Cl, or H,
• on each appearance, independently of one another, denotes
• denotes
• Z1 denotes —C≡C—, —(CO)O— or —CF2O—,
• Z2 denotes a single bond, —(CO)O— or —CF2O—,
• L11, L12, independently H, F or Cl,
• L13 H, CH3 or CH2CH3,
• X1—CN, —SCN, —OCF3 or F,
• n denotes 1 or 2,
• and one or more additional compounds selected from the group of formulae II, III and VI to IX:
• in which
• R21 and R22 are independently of each other defined as R1, preferably alkyl or alkoxy with 1 to 7 C-atoms, alkenyl, alkenyloxy or alkoxyalkyl with 2 to 7 C-atoms or C3-5-cycloalkyl-(CH2)0-1,
• is
• n independently 0 or 1,
• denotes
• in which
• L3 is CH3, OCH3 or CH2CH3,
• denotes
• R31 and R32 are independently of each other defined as R1,
• R61 is defined as R1,
• R62 is defined as R1, and
• L61, L62 are independently H or methyl,
• l denotes 0 or 1,
• R71 is defined as R1,
• R72 is defined as R1, and
• L71, L72 independently H or methyl,
• independently denote
• R81 is defined as R1,
• R82 is defined as R1,
• L81, L82 independently H or methyl,
• denotes
• Z8 denotes —(CO)—O—, —CH2—O—, —CF2—O— or —CH2—CH2—,
• o denotes 0 or 1,
• R91 and R92 independently of one another have the meaning given for R72,
• denotes
• and
• p is 0 or 1.