Fluorine-containing ether compound, fluorine-containing ether composition, coating liquid, high oxygen solubility liquid, and article

A fluorine-containing ether compound expressed by the following formula (1) or the following formula (2):

• Q1{—(Rf12)m2—O—(Rf11O)m1-A1}n1 Formula (1)
• {A1-(ORf11)m1—O—(Rf12)m2-}n2Q2-[(Rf12)m2—O—(Rf11O)m1—(Rf12)m2-Q3]p—(Rf12)m2—O—(Rf11O)m1—(Rf12)m2-Q2-{(Rf12)m2—O—(Rf11O)m1-A1}n2 Formula (2),
• wherein
• Q1 is a carbocycle having a carbon number k1 that may have a fluorine atom, an alkyl group, or a fluoroalkyl group as a substituent, and k1 is an integer no smaller than 3,
• Q2 is a carbocycle having a carbon number k2 that may have a fluorine atom, an alkyl group, or a fluoroalkyl group as a substituent, k2 is an integer no smaller than 3, and the plurality of Q2 may be identical to or different from each other,
• Q3 is a carbocycle having a carbon number k3 that may have a fluorine atom, an alkyl group, or a fluoroalkyl group as a substituent, and k3 is an integer no smaller than 3,
• Rf11 and Rf12 are each independently a fluoroalkylene group having a carbon number of from 1 to 6, and when there are a plurality of Rf11 or Rf12, the Rf11 or Rf12 may each independently be identical to or different from each other,
• A1 is a fluoroalkyl group having a carbon number of from 1 to 20 or —Rf21—C(═O)—NR1R2, and when there are a plurality of A1, the plurality of A1 may be identical to or different from each other,
• Rf21 is an alkylene group or a fluoroalkylene group, having a carbon number of from 1 to 6,
• R1 and R2 are each independently a hydrogen atom, a fluorine atom, an alkyl group that may have a double bond or a fluoroalkyl group that may have a double bond,
• n1 is an integer of from 1 to k1,
• n2 is an integer of from 0 to (k2-1), and the plurality of n2 may be identical to or different from each other,
• m1 is an integer of from 1 to 500, and the plurality of m1 may be identical to or different from each other,
• m2 is each independently 0 or 1, and the plurality of m2 may be identical to or different from each other, and
• p is an integer of from 0 to 100.