Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium

A fluorine-containing ether compound represented by formula (1). A fluorine-containing ether compound characterized by being represented by formula (1). R1-R2-CH2-R3-CH2-R4 (1) (In the formula, R3 is a perfluoropolyether chain; r1 is a formula (2), a in the formula (2) is an integer of 2 or 3, and R5 and R6 are identical or different substituent groups. R5 and R6 may also form a ring structure with a nitrogen atom; r2 is a formula (3), and b in the formula (3) is an integer of 1-3; r4 is a terminal group, the terminal group includes two or three polar groups, each polar group is bonded to a different carbon atom, and the carbon atoms to which the polar groups are bonded are bonded to each other via a linking group including a carbon atom to which no polar group is bonded. ) 式(1)所示的含氟醚化合物。一种含氟醚化合物，其特征在于，由下述式(1)表示。R1-R2-CH2-R3-CH2-R4(1)(R3为全氟聚醚链；R1为式(2)，式(2)中的a为2或3的整数，R5和R6为相同或不同的取代基。R5和R6也可以与氮原子一起形成环结构；R2为式(3)，式(3)中的b为1～3的整数；R4为末端基，上述末端基包含2个或3个极性基，各极性基分别与不同的碳原子结合，极性基所结合的碳原子彼此经由包含未结合极性基的碳原子的连接基而结合。)