Table 1. Selected bond lengths (Å).

Cr1—C5	1.852 (2)
Cr1—C6	1.887 (2)
Cr1—C7	1.873 (2)
Cr1—C8	1.914 (2)
Cr1—C1	2.312 (2)
Cr1—C2	2.184 (2)
Cr1—C3	2.190 (2)
Cr1—C4	2.325 (2)
C1—C2	1.379 (3)
C2—C3	1.436 (3)
C3—C4	1.371 (3)