Clusters

Bond length of M-O (Å)

Bond angle of M-O-Si (˚)

${\text{AuSiO}}_3^{–}$

2.28

88.15

${\text{AuSi}}_2{\text{O}}_5^{–}$

2.30

85.31

${\text{AuSi}}_3{\text{O}}_7^{–}$

2.03

107.94

${\text{AgSiO}}_3^{–}$

2.25

87.68

${\text{AgSi}}_2{\text{O}}_5^{–}$

2.27

85.10

${\text{AgSi}}_3{\text{O}}_7^{–}$

2.22

91.30

${\text{CuSiO}}_3^{–}$

1.99

83.77

${\text{CuSi}}_2{\text{O}}_5^{–}$

2.01

81.53

${\text{CuSi}}_3{\text{O}}_7^{–}$

1.95

88.65