Table 5. Selected Bond Lengths and Angles from Compound 7.

bond lengths (Å)
Sn(1)–O(1)	2.151(3)	Sn(2)–O(1)	2.126(3)
Sn(1)–O(4)	2.097(3)	Sn(2)–O(5)	2.150(3)
Sn(1)–O(5)	2.124(3)	Sn(2)–O(8)	2.085(3)
B(1)–O(1)	1.407(5)	B(2)–O(5)	1.416(5)
B(1)–O(2)	1.457(5)	B(2)–O(6)	1.461(5)
B(1)–O(3)	1.451(5)	B(2)–O(7)	1.455(5)
B(1)–N(2)	1.654(5)	B(2)–N(2)	1.641(5)
Sn(1)–Sn(2)	3.363(4)

bond angles (deg)
O(1)–Sn(1)–O(4)	86.36(10)	O(5)–Sn(2)–O(8)	89.50(11)
O(1)–Sn(1)–O(5)	71.87(10)	O(1)–Sn(2)–O(5)	71.86(10)
O(4)–Sn(1)–O(5)	92.51(10)	O(1)–Sn(2)–O(8)	92.09(11)
Sn(1)–O(1)–Sn(2)	103.69(11)	Sn(1)–O(5)–Sn(2)	103.80(11)
Sn(1)–O(1)–B(1)	115.0(2)	Sn(1)–O(5)–B(2)	133.8(2)
Sn(1)–O(5)–B(2)	136.4(2)	Sn(2)–O(5)–B(2)	117.9(2)
Sn(1)–O(4)–C(19)	115.5(2)	Sn(2)–O(8)–C(49)	113.9(3)
O(1)–B(1)–O(2)	115.8(3)	O(5)–B(2)–O(6)	114.9(3)
O(1)–B(1)–O(3)	108.0(3)	O(5)–B(2)–O(7)	107.2(3)
O(1)–B(1)–N(1)	109.5(3)	O(5)–B(2)–N(2)	109.4(3)
O(2)–B(1)–O(3)	109.2(3)	O(6)–B(2)–O(7)	110.1(3)
O(2)–B(1)–N(1)	106.0(3)	O(6)–B(2)–N(2)	107.0(3)