Table 7: Spin-spin constant in the ground electronic state of $\textit {l}$ -SiCCC and $\textit {l}$ -CSiCC. All values are in cm^-1.
l-SiCCC l-CSiCC

$\Delta$ E ( $X^{3}\Sigma^{-}$ $\rightarrow$ ¹ $\Sigma^+$ ) 4077 8379

$\lambda^a$ -0.605 0.08

-0.547186^b

^a Ref. (Lefebvre-Brion et al. 2004); ^b deduced from $\mu$ w measurements, Ref. (McCarthy et al. 2000).

**Table 7:** Spin-spin constant in the ground electronic state of $\textit {l}$ -SiCCC and $\textit {l}$ -CSiCC. All values are in cm^-1.
	l-SiCCC	l-CSiCC
$\Delta$ E ( $X^{3}\Sigma^{-}$ $\rightarrow$ ¹ $\Sigma^+$ )	4077	8379
$\lambda^a$	-0.605	0.08
	-0.547186^b

Source LaTeX | All tables | In the text